o ring dovetail groove. Several alternative designs were considered before agreeing to adopt the dovetail groove. o ring dovetail groove

 
 Several alternative designs were considered before agreeing to adopt the dovetail grooveo ring dovetail groove  [22] have shown that one of the main parameters in the evaluation of O-rings installed in a groove is undoubtedly the contact pressure distribution between the seal and the

They are more expensive to. 205" and larger. 103 . Dovetail Groove-2%: 5%: Dovetail Groove – Sidewall Height. WEAR-Lok Seals. AVOIDING TOOL FAILURE. Browse design considerations and recommendations for static face seals, metric o-rings, static dovetail o-rings, static rod-piston o-rings and dynamic rod-piston o-rings. 5-30 Parker Hannifi n Corporation • O-Ring Division 2360 Palumbo Drive, Lexington, KY 40509 Phone: (859) 269-2351 † Fax: (859) 335-5128 Dynamic O-Ring Sealing Parker O-Ring Handbook Gland Dimensions for Industrial Reciprocating O-Ring Seals Groove Diameter (Rod Gland) Tolerance - . An O-ring that is sheared, nicked or cut during installation can immediately cause leakage when placed into service. The O-ring dovetail groove had an average ultimate tensile load of 488 kgf for the three ½” samples tested. 13 mm thickness by . Sometimes, a bit of interference can be designed between the outer diameter of the O-ring and the outer diameter of the groove. (fig. 7745 (US & Canada Only) • +1. O-Ring grooves require machining with circular interpolation. Proudly made in the USA by AB Tools, Inc. 090”, . Download the pdf to. D. The perfect O-Ring for each purpose. Dovetail grooves are incorporated into a design to help hold the O-ring in place during installation and maintenance. This is beneficial for special applications where the O-ring has to be fixed by the groove e. 005” thickness by 0. We're proud to offer the world's largest inventory of readily-available and highly customized sealing solutions. The O-ring groove calculator enables engineers to specify an O-ring groove for any given O-ring or vice versa calculates the best suitable size O-ring for any given groove. 53 - O-Ring Dovetail Groovers. The online O-Ring Calculator offers engineers and professionals a quick and easy way to calculate O-Ring dimensions and the appropriate housing layout in accordance with the international O-Ring standard ISO 3601. dovetail or half-dovetail grooves, are encountered but are much less common. Doing one in a groove that is less than 1/32" wide is extremely challenging. ISO [email protected] 973. Viewing 10 of Show More. D1 O-Ring Diameter. Unfortunately, they are very fragile dueto their trapezoidal profile of a large Cutter Diameter with a smaller Neck Diameter. of Flutes Price AlTiN; HDG1/16. Cutters for machining grooves by side running have a dovetail groove shape. 1. Trapezoidal design provides consistently positive retention in the groove and creates a larger overlap between groove lip and seal for increased retention. Ethylene Propylene EPDM O-Rings Material. Dovetail grooves are used to hold the O-ring in place during installation or maintenance. For O-Ring Grooves - Cutting Tools a variety of drilling and cutting tools available 24 hrs. Dovetail Cutters-Sight Groove Dovetail Cutters Solid carbide tool designed for milling dovetail grooves for Sight Attachments, and offered in 50° or 60° included angles. Center cutting. Seal ring grooves are critical features on many oil and gas components, and require close tolerances and a high-quality surface finish. , Tube Fittings Div. O-Rings. This keeps the O-ring in the groove during assembly. Technical Handbook O-rings 12 C. O-ring standards are specified by the JIS B 2401. Inside is the circle of the corresponding o-ring which should be deleted or turned to construction geometry when. 005) radius size tolerance so the tolerance I define is twice the cutting tool radius size tolerance. 66° Dovetail Cutters For O-Ring Grooves. Spring-Loaded Seals In addition to. Recent Posts. O-Ring Size Charts O-ring, x-ring and square ring size charts. Start by inspecting the ORFS fittings to make sure that the O-ring is properly installed in the groove (CORG). In a face seal, a dovetail and half-dovetail groove are ideal for holding an o’ring in place during installation and operation. Our Carbide O-Ring Dovetail Cutters meet Parker Hannifin standards. The design is optimized for strength by using an insert pair to generate the groove form. 095", . Carbide Dovetail Cutter, 3 Flute, AlTiN Coated, 12mm Shank x 7. A preloading of the ring against the groove seating face helps to ensure a smooth installation, reducing the risk of ring displacement and rolling. Share. During operation, the pressure of the medium intensifies the deformation of the O-ring and enhances the sealing function. Explore some of the most common sealing materials we offer here. 70 - Double End Split Blanks. is a trusted supplier of metric dovetail cutters and accessories. This groove design is rela-tively uncommon as it is expensive to machine and should not be used unless absolutely. Static / Dynamic Gland - Male Static / Dynamic Gland - Female X = 32 rms when sealing liquids. Standard O-ring in half-dovetail groove Trap-Seal in half-dovetail groove Very secure retention – Trap-Seal is tucked under the groove lip Parker Hannifin Corporation Tube Fittings Division 3885 Gateway Blvd. 33 mm thickness by 20 %, approx 5 N per mm of sealing length is required for a hardness of 70 Shore A resp. Price Each . An undercut or dovetail groove has proven beneficial in many applications to keep the o-ring in place. From Old School conventional guys, to…Another problem may be when an O-ring is used in a non-circular groove or racetrack groove. To create an O-ring groove, click the O-Ring Grooves tab. The actual groove dimensions are needed to supply the correct sized machined back-up ring. 114 0. • In milling the groove, a regular o-ring groove using the dimensions of “W” and “L” must be made first, then finished up with a dovetail cutter. This groove is not common because it is more expensive to machine, but this dovetail groove can avoid seal extrusion out. MISUMI offers free CAD downloads, prompt lead times, competitive pricing, and no minimum order quantity. groove with a Standard Face Grooving Insert the width of the top of the Dovetail Groove. 057". (fig. Made of solid carbide, they are harder, stronger, and more wear resistant than high-speed steel and cobalt steel for the longest life and best finish on hard material. Metric and imperial standards. Retaining Ring Groove. Dovetail Groove: Half Dovetail Groove Parker Hannifin O-Ring & Engineered Seals 2360 Palumbo Drive Lexington, KY 40509 Ph: 859-269-2351 Fax: 859-335-5128 oesmailbox@parker. Close. Some find success using a thick lubricant, such as O-Lube, to act as a temporary glue. The seal effect is created during installation by axial or radial compression of the cross-section. Dovetail Cutters-Sight Groove Dovetail Cutters Solid carbide tool designed for milling dovetail grooves for Sight Attachments, and offered in 50° or 60° included angles. . D. 125” and . A captured o-ring refers to a groove that prevents the o-ring from falling out of the groove. 13 Groove Radius Eccen- tricity. Gland Design Dovetail Grooves Gland Design for a Static Application for O-rings in Dovetail Grooves, METRIC Dovetail grooves are used to hold the O-ring in place during installation or maintenance. Dovetail grooves and Crush grooves are non-rectangular and are designed intentionally to 95% maximum gland fill. These groove cutters are custom cut two-fluted end mill, made of Carbide. Dovetailed O-Ring Groove. Squeeze Groove Width. of an O-ring gland is mainly influenced by diameter of the mating surface of the rod or piston and bore. This can be easily achieved by taking a fly-cut on the surface prior to milling the groove. Parker 500 Series O-Rings. Choose from our selection of groove cutters, including over 700 products in a wide range of styles and sizes. Parker's EZ-Lok Seals were designed and developed to be a drop in replacement for standard O-Ring dovetail grooves. Dovetail Grooves. Half Dovetail Groove. The light blue faces in the following image represent a groove. 0840" Corner Radius: 0. X-rings are available in the same USA standard. General purpose dovetails are used to undercut or deburr features in a workpiece. ToughShield™ Plus Plating. This is particularly true when machining O-ring grooves, as this operation requires the tool to drop into the. Ideal for creating O-ring grooves. Standard : Type : Size : Sketch: Displays a sketch of the selected groove type. . 2 What is an O-Ring Seal? An O-ring seal is used to prevent the loss of a fl uid or gas. Optional Retention Sleeve Material: D-2, 60-62 HRC Retention Sleeves for the DoveTail Cores assure the position of the molded part during core collapse and part ejection. 5000: $71. nom. Speeds & Feeds Product Table: Dovetail Cutters - Parker Hannifin O-Ring Dovetail Cutters Series: 238xx, 239xx, 563xx. There are cutter shapes that machine the O-ring shape by plunging, and cutter shapes that machine grooves transversely. O-ring Vacuum Seal Dovetail & Half-dovetail Grooves It is often necessary to provide some means for retaining an O-ring in a face seal groove during assembly and maintenance. I capture an o-ring by making the groove narrower than the tables recommend. The retention feature makes having an upside-down or. The Trap-Seal is a trapezoidal-shaped O-ring that is designed to stay securely lodged under the groove lip of the O-ring face seal (ORFS) fitting. 050Manufactured by Kaiser Tool Company, the Groove ‘N Turn line includes dovetail grooving inserts that machine O-ring dovetail grooves with 66-degree undercut angles. 103 nominal) O-Rings and I'm making the depth of the groove about . Til now I allways used a normal tool to make a straight groove and then used two hand grinded ultra mini boring bars to make the 26° parts. TO PLACE ORDERS OR QUOTATIONS O-Ring Cross Section Gland Depth Squeeze Diametrical Clearance Max. This damage can be caused by sliding the O-ring over sharp corners or threads, insufficient lead-in chamfer on the mating hardware, an O-ring that is improperly sized and even if no O-ring lubricant is applied. 0700" Cutter Diameter: 0. Metric Features: O-Ring Dovetail Cutters Solid micrograin carbide; For milling 24°o-ring dovetails; They cut with both top. Irregular clearance. For O-Ring Grooves - Cutting Tools a variety of drilling and cutting tools available 24 hrs. • To deburr use a Scotch Brite pad (a deburring knife will destroy the “W” tolerance). The compressed O-ring must have extra space within the groove without overfilling the groove. . Groove Depth Top Radius Bottom Radius O-Ring Size Shank Dia Shank Length 1 PC 2-10 11-25 26-100; 51-8000: 1291: 51-8000 : 0. SPECIALS IN 4-6 WORKING DAYS. spiral failture 5fdi4fbm t epvcmf dibngfs tfbmt boe % sjoht bsf sbejbm tfbmt uibu ibwf ábu joofs ejbnfufst boe nbdijofe pvufs ejbnfufst 5iftf tfbmt bsf dpnnpomz vtfe jo tubujd bqqmjdbujpot jo ezobnjd bqqmjdbujpot uifz bsf nptumz tffo jo sfdjqspdbujoh bqqmjdbujpotThis recommended practice provides the design criteria for static elastomeric O-ring seals used specifically in engine and engine control systems. Face seal o-rings pop out easily, yeah. DOVETAIL O-RING FACE GROOVING INSERTS " " " Style 6 Shown FRONT RAKE: Primary 10° honed, Secondary 15° BACK CLEARANCE: 24° one side SIDE CLEARANCE: Depends on major diameter RADIUS: On 24° side only. The dovetail retains the o-ring in the groove. Buy Harvey Tool Parker Hannifin O-Ring Dovetail Cutter, 0. Single flute carbide O-Ring form tools for lathe applications. For a rod (shaft) seal:O-Ring Max Groove Diameter = Min Shaft Diameter + (2 x Recommended Gland Depth) b. Cutters for machining grooves by side running have a dovetail groove shape. GlandClick Grooves (Toolbox toolbar) or Toolbox > Grooves . btrueblood (Mechanical) 13 Jun 11 13:35. 051". Box 80430 Fort Wayne, In 46898-0430. Neck diameter is measured to the theoretical sharp corner. L. 142". 750 Ø to 1. (480) 968-0957 FAX (480) 968-8042 [email protected] μm Ra)Internal diameter (mm) You can find the largest assortment O-rings at ERIKS. These o-ring groove design guides offer default dimensional guidance for basic o-ring groove. Kundera J. Doing one in a groove that is less than 1/32" wide is extremely challenging. To open this tab: Click Grooves (Toolbox toolbar) or Toolbox > Grooves. 070. See the Dovetail Groove Cutter data sheet for more information (page 36). Also known as Type B seals, these U-cups are wider than our other O-ring-loaded U-cup seals for better stability and fit in wider grooves. The parameter dashboard in the Results section will immediately show you if the selected O-ring size is suitable for your. O-Ring Gland Fill %O-Ring Volume) / (Gland Volume) Gland volume vs. Free groove volume. Note: Not all standard sizes are in stock. Bottom Radius. m barnwell services: the uk’s largest independent manufacturer, stockist & distributor of o rings metric range ‘o’ ring size chart page 2 i. SPECIALS IN 4-6 WORKING DAYS. • To deburr use a Scotch Brite pad (a deburring knife will destroy the “W” tolerance). From in-house mixing and tooling op-O-Ring Basics . 2 straight flutes. In the past all the o-ring grooves I machined were for static pressure using the Parker guidelines and the o-rings move around in those grooves. Calculate squeeze of course as well. 139 . L1 O. O-Rings. 800. However, installing an O-ring into. D. 10 0. thermal expansion of the groove and the O-ring. Under high pressure the O-ring is forced to the side of the gland – away from the pressure. The results of this analysis show that compared with rectangular grooves, dovetail grooves contribute to the enhancement of seal performance. 471 dia. Timelord (Mechanical) 15 Dec 08 16:29. 42 - Quick Change Face Grooving Tools. 44 Static seal – dovetail groove 46 Dynamic seal – hydraulic 49 Sizing charts 50 2-xxx sizes 55 3-xxx sizes 56 5-xxx sizes 57 6-xxx sizes. Free delivery no minimum order. 750 Ø to 1. Center cutting. I hold it in place by friction. Calculate the O-Ring groove dimensions. 005". When this happens the groove component must be reworked or removed from service. O-Ring volume. 0150" (1/64) Neck Diameter: 0. 5 was of a standard face seal, the o-ring would fall out as the valve cycles up. 73 - Face Grooving Tools. Higbee Division: Syracuse, NY The online O-Ring Calculator offers engineers and professionals a quick and easy way to calculate O-Ring dimensions and the appropriate housing layout in accordance with the international O-Ring standard ISO 3601. Price Each . Narrower groove for sealing vacuum or gas. Groove Mounted. You may have to work on the placement in 3D space of the UDF upon creation. Bosstail: The O-ring is used for sealing straight thread tube. An undercut or dovetail groove has proven benefi cial in many applications to keep the O-ring in place. 003 0. Similar Tools. HORIZON CARBIDE TOOL, INC. Furthermore, the O-ring groove has triangular, rectangular, or dovetail shapes. 5-30 Parker Hannifi n Corporation • O-Ring Division 2360 Palumbo Drive, Lexington, KY 40509 Phone: (859) 269-2351 † Fax: (859) 335-5128 Dynamic O-Ring Sealing Parker O-Ring Handbook Gland Dimensions for Industrial Reciprocating O-Ring Seals Groove Diameter (Rod Gland) Tolerance - . It is the most common and most widely known type of seal in use today. As it is pressed against the side, the O-ring is deformed to form the. Parker Hannifin2360 Palumbo DriveLexington, KY 40509Ph: 859-269-2351Fax: 859-335-5128 oesmailbox@parker. complete dovetail groove. 73 - Face Grooving Tools. O-Ring X-Section: 0. This is also the case when placing an item inside another item and utilising the o-ring as the final sealant. E. 49 votes, 22 comments. Justin . An O-ring. This can make them challenging. O-Ring X-Section: 0. Unfortunately, they are very fragile due to their trapezoidal profile of a large Cutter Diameter with. Putting the wrong sized O-ring into an application can also lead to damage, making it important to verify O-ring. Diamond Seals. EZ-Lok Seals. Free CAD downloads, quick delivery, competitive pricing, and no minimum order quantity. It basically needs to plunge in and follow the centerline of the groove. Parker O-Ring Handbook - ORD 5700 pdf. AB Tools Inc. Recommendations are based on available technical information, and are offered as suggestions only, any reliance placed on such information by the user is strictly at the user’s risk. An O-ring is a circular cross-section ring molded from rubber (Figure 1-1). 2. 0830" (2. Once your design is complete, easily order o-rings online from the world’s largest o-ring inventory network. thermal expansion of the groove and the O-ring. Sounds like he already has the groove out ,he is just needing to remove the milled finish for the O ring. and Canada only) 716. (a and c) Fracture pattern of slit saw groove. FVMQ Fluorosilicone O-Rings Material. Once you find the exact metric o-ring you need, you can easily order online from the world's largest o-ring inventory network. grooves are used to hold the O-ring in place on a face seal groove during assembly and maintenance of equipment. 057. If an O-ring is not present, you will need to properly install one before moving to the next step. Which guide will walk you taken the basics! Visit our website to know more. Slot Depth. The groove design allows the O-ring to be retained in the axial/face seal during assembly and maintenance. The results of this section will require some analysis by the user. If the o-ring, quad-ring, x-ring or square-ring you need doesn't fit these standards, custom. The dovetail groove construction is only recommended for O-rings with bigger cross sections, . 2 or 3. For reciprocating O-rings: a compression ratio of 10-20%. The high component value and complexity make process security essential. Tool numbers with US suffix have reduced neck diameters as shown in table. Part. Granted, a single dovetail groove can be cut using a dovetail bit with a slightly larger shank diameter, but it would still require a tool change. Joined Aug 3, 2006 Location Cape Cod, Ma. Dovetail grooving inserts are used to machine O-ring dovetail grooves with 66-degree undercut angles. At AB Tools, Inc. 433" so I would assume that you could follow the directions for the 3/8" dovetail but make the distance between the grooves about . A square O-ring prevents these piston seals from rocking in the groove. frequently found on the inside and outside diameters of parts; used for mounting fasteners such as snap rings and retaining rings, or for seals such as O-rings. 2360 Palumbo Drive. Proper sizing is key. . OE (S Series) S Series for O-Ring Grooving. Parker Hannifin O-Ring & Engineered Seals 2360 Palumbo Drive Lexington, KY 40509 Ph: 859-269-2351 Fax: 859-335-5128 oesmailbox@parker. Groove Width. ± w 0660-20 0670-20 0680-20 0690-20 0700-20 0710-20 0720-20 0730-20 0740-20 0750-20 0760-20 0780-20 0790-20 0800-20 0820-20 0830-20 0840-20 0850-20 0860-20 0870-20 0880-20 0900-20 0920-20 0930-20. 53 - O-Ring Dovetail Groovers. For standard O-ring grooves in the face and radial applications, we recommend 60-90% gland fill. 5 Ø; Carbide Tipped; Corner Rounders. A. 055 through 1/16 ±. Using an appropriate tool entry method, specifically understanding when drop hole allowance is (and is not) needed, is important to keep common dovetail mishaps from occurring. A Reddit for Machinists of all varieties. Volume fill is the O-ring volume divided by the gland volume. dovetail o- 링 그루브 디자인 도브테일 홈은 장비의 조립 및 유지 보수 중에 O- 링을 페이스 씰 홈에 제자리에 고정하는 데 사용됩니다. Please call for specific lead times and availability of special sizes or materials. O-Ring inner diameter stretch, outer diameter squeeze. 191 0. P. FFKM Markez® O-Rings Material. These tips produce an angled cut of chamfered edge on a workpiece. Dovetail The O-ring is also axially squeezed in a dovetail groove. Because they can be expensive to machine, O-ring grooves should only be added when necessary or for metric O. 450". 150” with major diameters starting at . 004How to install and remove a spiral gasket from its recommended dovetail groove. Details. L1 O. Manufactured by Kaiser Tool Co. Failure pattern: Typical of high-pressure systems, this pattern can be identified by the many small bites or nibbles taken out of the O-ring on the low-pressure (downstream) side. 5. Custom Made O-Rings; Fluorosilicone O-Rings;Kalrez® 1050LF. Double sided dove tail vs one sided dove tail groove for o-ring Double sided dove tail vs one sided dove tail groove for o-ring elinah34 (Mechanical) (OP). S. Using the table above, determine the maximum recommended gland depth for your application. Rather than a grease, the Super-O-Lube is a high viscosity silicone oil. Use of o-rings usually implies a desire to seal a specific volume. 050 . O-Ring Groove (Gland) Design Guide. The only time youOptimized for milling dovetail grooves into a part, Micro 100's solid carbide Dovetail Cutters are offered with 30°, 60°, and 90° included angles and in both uncoated and AlTiN coated styles. D. 1 at $250 and 2 at $180 each. It is often necessary to provide some mechanical means of. Standard O-Rings 800. An active o-ring set-up will have them move in a similar direction. 065. Carbide Dove Tail Cutter 4-Flute for O-Ring for Rough Stainless Steel Applications. For ferrous and non-ferrous materials. This tool is engineered with a polished split face for improved chip. 059 102 . Tool #: 56307; Quantity Available: 250; Price: $76. For bolted flanges or open & close lids. D. A Reddit for Machinists of all varieties. AS4716D. 40; Customer Rating: Find a DistributorLarger overlap between groove lip and trapezoidal seal provides a more secure level of retention. Collapsible Molded. 2014. Days to Ship : 5 Days. comCarbide Straight Blade Strong Inverted Tapered End Mill, 2-Flute, Strong Inverted Tapered, Rounded Joint Type. Bochnia. All shanks have lockdown flat for faster setups. 70 - Single End Split Blanks. I. D. Fluorosilicone O-Rings FVMQ. 10 0. Available in ½", 5/8", ¾" and 1" diameters, the toolholders have a 1. 005". All are made with premium carbide to optimize strength and durability, giving you the longest life and best finish on hard metals. J1453/1_201906. Dovetail Cutters - Parker Hannifin O-Ring Dovetail Cutters WITH Drop Hole Allowance, Specialty Profiles. Gland Design, O-Ring and Other Seals AS4716D This SAE Aerospace Standard (AS) provides standardized gland (groove) design criteria and dimensions for O-ring seal glands for static and dynamic applications, and other seals. Excessive system pressure . Included Angle 7°, . 6560 or visit applerubber. 오링 (O-Ring) 규격 표. The O-ring must have room to expand laterally in the groove due to axial compression. To create a retaining-ring groove, click the Retaining Ring Grooves tab. For O-ring grooves. The O-ring has become the world's most popular and versatile seal due to its simple shape, low space requirements and its availability in a vast selection of sizes and compounds to meet every industrial requirement. EPDM O-Rings. Once you’ve found the dovetail o-ring you need, you can quickly and easily order online from the world's largest o-ring inventory network. Recommended surface finish: 16. The dovetail retains the o-ring in the groove. Fully stocked tool optimized for milling O-Ring grooves, featuring a stub flute length for improved strength. It is sometimes necessary to mount an O-ring in a face type groove in such a way that it cannot fall out. P계열/ G계열/ V계열. X-Rings. Choose from more than 500. Gland width is to sharp edge of groove. has a geometry that won't allow for thermal expansion of the ring at 350 F. Whether your application conforms to U. THINBIT, manufactured by Kaiser Tool Company, has announced the expansion of its GROOVE 'N TURN line of dovetail grooving inserts. 73 - Face Grooving Tools. O-ring Gland Design Dovetail seal Also here there is a metal to metal contact as long as the con-struction will not deform under system pressure. Using the table above, determine the maximum recommended gland depth for your application. 005: 0. Many fluids can cause an O-ring material to swell 10 or 20%. If you’re printing FDM, I would use a soft sheet gasket clamped between flat flange surfaces instead of an o-ring, you’re more likely to get a good seal on the rough printed. As well as the chemical volume swell or shrinkage of the O. Solid Carbide; Carbide Tipped; M42 Large Radii; Full Radius, Top & Bottom. Be they circular DT grooves on the face of a part or around the periphery, in over 40 years machining n metal chewing etc etc , I doubt I've made 100 in total - and 60 of those were on one job, and a. 220 5. O'ring groove dimensions for static and dynamic operation. 203K subscribers in the Machinists community. 4. O-ring dovetail cutters are held to specific standards to cut a groove that is wider at the bottom than the top. You just position it according to where the groove should be and revolve around decired axis. The dovetail groove described in Design Charts 4-4 and 4-5 will serve this function. For O-Ring Grooves - Cutting Tools a variety of drilling and cutting tools available 24 hrs. A rubber O-ring seal is used to prevent the loss of a fluid or gas. For standard O-ring grooves in the face and radial applications, we recommend 60-90% gland fill. com O-Ring Products. 오링은 내경 외경 두께에 따른 규격이 정해져있습니다. Dual turn rings conform to MS 28782 and match the dash numbers of an AN 6227 series of O-rings. The sizes are specified by the inside diameter and the cross. Dovetail Cutters - Parker Hannifin O-Ring Dovetail Cutters WITH Drop Hole Allowance, Specialty Profiles. , we not only stand by our product 100%, but we use them in our day to day operations. TOOL # 23914. VMQ Silicone O-Rings Material. The inserts are for machining O-ring dovetail grooves with 66° undercut angles. Under high pressure the O-ring is forced to the side of. And use preferrably 32Ra for groove surfaces and sealing surfaces, 63Ra works as well. 53 - O-Ring Dovetail Groovers. Note 3: Use FKM Quad-Rings®/X-Rings with minimum stretch because FKM Quad-Rings®/X-Rings have a smaller tolerance range thanThe modified dove tail groove geometry, using the Parker O-Ring Handbook as a guide, is provided in the attached sketch.