L = Gland Depth. Formerly known as ARP 568, and currently maintained by the Society of Automotive Engineers, AS568 lists 369 sizes of O-Rings with corresponding dimensions and tolerances. +/- W I.D. Call 1-303-758-2728. Website by . Item Specifications Inner Dimension 42.52 mm Manufacturer NOK Material Nitrile Rubber Tolerance 1 +/- 0.38 Tolerance +/- 0.08 Width 2.62 mm In Stock Add to Cart Have Questions? O.D. Daemar and Kalrez maintain inventories of many standard AS-568 O-rings. The seal assembly consists of an elastomer O-ring and a gland. Based on the cross section (CS) of your O-ring, you will choose . Follow Us: Home. Actual lead times . This Aerospace Standard specifies the inside diameters, cross-sections, tolerances, and size identification codes (dash numbers) for O-rings used in sealing applications and for straight thread tube . Need Bulk Pricing? The three main types of standard groove designs are Industrial Static also called Radial, Industrial Reciprocating also called Dynamic, and Face Seals also called Axial or . On the basis of maintaining the excellent properties of organosilicon materials such as heat resistance, cold resistance, high voltage resistance, weathering resistance, and environmental . Metric O-Ring Part # System Since elastomers are essentially incompressible, the technically correct term would be "deformation." British Standard BS1806 / American Aerospace Standard AS568A, SAE boss seals and extended range of imperial sized o'rings. We offer a number of back-up ring styles . AS568 is used in industries beyond that of the aerospace, including automotive and general industrial uses. www.polymax.co.uk sales@polymax.co.uk AS568 Standard O-ring Size Inches Internal Diameter (mm) Internal Diameter . Standard O-Rings are available in 369 sizes as set up by the Aerospace Standard 568 published by the Society of Automotive Engineers. The standards range in I.D.'s from .029" to 26," and cross sections (widths) from .040" to .275". O-ring tolerances vary by use, please refer to our o-ring tolerance pages or contact us for responsive expert service. These correspond to AS568A dimensions. Through our extensive research we believe that these O-ring groove dimensions and fit details will provide the optimum O-ring compression squeeze for your seal to prevent O-ring leaks. AS568 O-rings are an SAE standard most commonly used. Standard O-Rings are specified by their inside diameter and cross section . Standard O-ring Sizes (200 Series 201 to 285 cross section Diameters w = 139 .004 inches, w = 3,53 0,10 mm Size Nominal Size Standard O-ring Size Metric O-ring Size Only (Inches) (Inches) (millimeters) AS 568A Actual Per AS 568 A Actual Per AS 568A Uniform Dash No. Responsible. Fluorosilicone o-rings, also short for FVMQ o-rings, combine the advantages of silicone rubber and Viton rubber.The main chain of the fluorosilicon o-rings is a semi-inorganic organosilicon structure. CS ID OD AS568 Dimensions SAE AS568 is published by the aerospace portion of the Society of Automotive Engineers. Tolerances for Metric O-Rings. O-Ring Sizing Formulas Choose from our selection of oil-resistant O-rings, chemical-resistant O-rings, and more. There are 369 standard sizes of O-rings with inside diameters ranging from 0.029 to 25.940 inches and cross sections ranging from 0.040 to 0.275 inch. Distributor of O-rings, Minnesota Quad Rings, Hydraulic Seals, U-cups, Piston Cups, Vee Packings, Wipers, Lathe Cuts, Teflon?products, Teflon Spring Loaded & Teflon?Oil Seals, Mechanical Shaft Seals, gaskets, braided packings, bearing guards, sealants, adhesives, lubricants, silicone fluids & greases, RTV's, UV curing equipment, adhesives & coatings, dispensing equipment & a wide variety of . Item Specifications Inner Dimension 107.62 mm Manufacturer NOK Material Nitrile Rubber Tolerance 1 +/- 0.76 Tolerance +/- 0.08 Width 2.62 mm $1.04 In Stock Add to Cart Have Questions? These sizes in Aerospace Standard (AS568B) given by the Society of Automotive Engineers are defined by dash numbers. The chart provides dimensions, both nominal and metric, for standard (AN) shrinkage materials ONLY. Trelleborg Sealing Solutions has produced a new brochure for AS568 Standard O-Rings in NBR 70, NBR 90, FKM 75 and FKM 90 materials, many of which are in stock and available for quick delivery. Tolerances are small variations in O-Ring size that occur due to manufacturing limitations. Each o-ring size is officially written as AS568-XXX, where the -XXX denoted a particular size of o-ring. .005 to .060. G = (Do-Di)/2. These sizes are designated by dash numbers shown on the 568 DASH Chart and are standardized by imperial dimensions. Class A O-rings have the same tolerances as those used in AS568, which are tighter than the tolerances for Class B O-rings, and are suitable for industrial or aerospace applications when the application or the housing require tighter tolerances. Standard O-rings (or ISO 3601 ), are given a concrete, set tolerance for both Inner Diameter (ID) and Cross Section (CS). This table actually starts in the 300 series (0.210 CS) but finishes in the 400-series (0.275 CS). The AS568 o ring size chart, published by the Society of Automotive Engineers (S.A.E), sets a standard for universal o ring sizing. O-Ring size is defined by inside diameter and cross-section (width) and is listed in both fractional and decimal dimensions with tolerances. AS568B STANDARD O-RING GROOVE DESIGN. This standard features O-Rings in five different cross-sections, with inside diameters that range from 1/32" to 26". 1082 E. Edna Place, Covina, CA 91724 sales@wave1intl.com. Refer to our standard o-ring size chart to find USA AS568 o-ring dimensions. This standard offers O-Rings in five different cross-sections, whose inside diameters range from 1/32" to 26". AS568 Viton O-Rings. d2 d1 Figure 1: O-Ring dimensioning ADVANTAGES SAE-AS568 ADOPTION NOTICE: O-RINGS, AEROSPACE STANDARD FOR (12 JUL 2005)., SAE-AS568, "O-RINGS, AEROSPACE SIZE STANDARD FOR", was adopted on 12 JULY 2005 for use by the Department of Defense (DoD). The dimensions and tolerances specified in this standard are suitable for any e In stock and ready to ship. 1.2 What is an O-Ring Seal? A "Metric O-Ring" simply means that the size of the o-ring is defined in millimeters. The first five series are based on cross-sectional diameter. In practice, this gets shortened to simply "-XXX" and is commonly referred to as a "dash number". Tol. Below is a table of 400 series standard o-ring (0.275 CS) sizes. AS568 Size ID (mm) ID Tol' (+/- mm) CS (mm) Services. When sizing O-Rings it is important that you take into account tolerances. WARNING: Gland Depth x Groove Width (area of the gland) must be larger than the cross section area of the o-ring. Tol. Standard O-rings. Please contact us to review capabilities for your application. Standard O-Rings are available in 369 sizes as set up by the Aerospace Standard 568 published by the Society of Automotive Engineers. AS568F. Choose sizes to buy standard and custom o-rings from the world's largest inventory network. Throughout this reference guide the term "compression" is used for describing what provides the sealing force. 99 = Standard per AS568 (Wide, class 2 dia. For custom o-rings or tight tolerance o-rings, contact us to review the capabilities of your application. AS568 SIZES 1 THE FREUDENBERG-NOK SEALING TECHNOLOGIES O-RING DESIGN QUICK REFERENCE This design quick reference guide is intended for use in specifying O-ring and groove dimensions for static applications with pressures less than 1500 psi. Contact Us For Assistance Or Samples Click Here and contact us today to receive a quote or if you have any questions regarding sizing. From a sourcing perspective, selecting a commercially available O-ring size is the easiest option. AS-568 O-Ring Sizing Chart To calculate an o-ring's outside diameter (OD) you may use this formula: 2 (CS) + ID = OD The dimensions of the O-Ring are defined by the inside diameter d 1and the cross section d 2(Figure 1). AS568 specifies for sealing applications of o-rings the inner diameter, tolerances, cross-sections as well as size identification codes. This Aerospace Standard specifies the inside diameters, cross-sections, tolerances, and size identification codes (dash numbers) for O-rings used in sealing applications and for straight thread tube fitting boss gaskets. Otherwise many bad things will happen to your design. This SAE Aerospace Standard (AS) specifies the inside diameters, cross-sections, tolerances, and size identification codes (dash numbers) for O-rings used in sealing applications and for straight thread tube fitting boss gaskets. The standard sizes used in the United States are defined by Aerospace Standard AS568B, Aerospace Size Standard for O-rings. Back-up Ring Size Chart; Custom Molded Rubber Seals; Rubber-to-Metal Bonded; Machined Metal; Compounds. Find AS568 o-ring standard sizes by cross section, inside diameter and outside diameter in our o-ring size chart and separate o-ring tolerance chart. High Performance Seals also . AS568 lists 369 sizes of O-Rings with corresponding dimensions and tolerances. US companies adopt the use of this standard for reference most commonly. SAE AS568 is the most commonly used standard in the US for . Find the as568 standard size of the as-568 O-ring by cross-section, inner diameter, and outer diameter in our O-ring size table and separate O-ring tolerance tables. This encapsulation protects the elastomer, which imparts memory to the seal, from hostile environments. They are also . Speak directly to one of our experts. The UK also has standards sizes known as BS sizes, typically ranging from BS001 to BS932. 0.574. AS568 O-Ring Sizes The US Society of Automotive Engineers (SAE) Aerospace standard AS568 is one that specifies the inside diameters, cross-sections, tolerances, and size identification codes (dash numbers) for O-rings used in sealing applications and for straight thread tube fitting boss gaskets. The purpose of this chart is to specify the inside diameters, cross-sections, tolerances, and size identification codes (dash numbers) for o-rings used in sealing applications and for straight thread tube fitting boss gaskets. It was previously designated as ARP 568 and is now maintained by the Society of Automotive Engineers. We can also meet your requirements for electronic data interchange (EDI), same-day shipping, just-in-time (JIT) programs, bar-coding, custom parts, parts washing, kitting and more. G = Groove Width. The gland usually . This SAE Aerospace Standard (AS) specifies the inside diameters, cross-sections, tolerances, and size identification codes (dash numbers) for O-rings used in sealing applications and for straight thread tube fitting boss gaskets. The table also displays the o-ring cord stock tolerance, so that you can accurately calculate whether the cord can be suitable for your precise application. In 1974, these standards were republished as AS568A and then again in 2001 as AS568B, in 2008 as AS568C, and in 2014 as AS568D. O-Ring Tolerances AS568 Standard USA Parker Sizes Military. The standard sizes used by Parco and the other major O-ring manufacturers in the United States are defined by Aerospace Standard AS568. Refer to the standard O-ring size chart below to help you find the AS568 O-ring size you need. AS568 O-RING REFERENCE GUIDE ZERO SERIES - 1/16" CROSS-SECTION, .070" (1.78MM), TOLERANCE .003" ( 0.08MM) AS568 Nominal Size Actual Size Number ID OD CS ID (inches) ID (mm) -001*1/32 3/32 1/32 .029 .004 0.74 0.10 -002*3/64 9/64 3/64 .042 .004 1.07 0.10 -003*1/16 3/16 1/16 .056 .004 1.42 0.10 tolerances) A9 - 00 A9 O-ring series 00= Standard Code 160 NBR, Nitrile Elastomer Compound 161 NBR, Nitrile 409 FVMQ, Fluorosilicone 410 731 FVMQ, Fluorosilicone Note: Anti-extrusion, back-up rings are normally recommended for use in conjunction with O-rings fo operating pressures at or above 1,500 psi. ISO 3601 Size Ref Inner Diameter (mm) Inner Diameter Tolerance +/-Cross Section (mm) ISO 3601 Due to the fact that there are literally dozens of O-Ring standards globally, finding a single recognized standard for metric O-Ring tolerances is virtually impossible. Any questions? Select a size to buy standard and custom o-rings from the world's largest inventory network or custom orders can be made within a few weeks, typically without tooling fees. Order o-rings online from the world's largest inventory network including custom o-rings typically without tooling fees. USA Military and Aerospace grade O-Rings typically refer to AS568 O-Ring Tolerances (slightly tighter than general purpose) and are available standard with most Military and Aerospace O-Ring specifications. AS568 is the Aerospace Size Standard for O-rings published by the Society of Automotive Engineers (S.A.E.). For standard sizing, please see tables below for sizing and tolerances. An O-ring is a circular cross-section ring molded from rubber (Figure 1-1). That document, published by the Society of Automotive Engineers (SAE), lists the sizes of O-rings in six series or groups in both inches and millimeters. AS568 O-RING ID TOLERANCE (INCHES) AS568 O-RING ACTUAL CS (INCHES) AS568 O-RING CS TOLERANCE (INCHES) Wave 1 International. Besides the seals themselves, related offerings include Parbak back-up rings that . AS568 O-Ring sizes are available with cross sections of approximately 0.040 inch / 1.02 mm to 0.275 inch / 6.99 mm and inside diameters up to 26.000 inch / 660.40 mm and more. O'ring Sizing. Encapsulated O-ring is a two-component circular seal consisting of Teflon encapsulation and elastomer (Silicone / Viton). ISO 3601-1 currently has two classes of O-rings: Class A and Class B. About Wave 1 2021 Wave 1 International.