Benefits of our inventory · AS568 and ISO 3601 standard sizes · Hardness range from 10 to 90 Shore A durometer · 8,000 different non-standard sizes 

How to Measure O-Rings · Place the O-ring on a clean, flat, level surface. · Determine the inside diameter by using a ruler to measure from one inner edge to 

Rubber Seals, Sealing Devices & O-Ring Seal Design | Apple Rubber Products

The most commonly found o'ring size standard, even in metric based machinery 0.070″ (1/16″ Nominal) 1.78mm Cross Section Show entries Showing 1 to 10 of 50 entries Previous Next 0.103" (3/32″ Nominal) 0.139" (1/8″ Nominal) 0.210" (3/16″ Nominal) 0.275" (1/4″ Nominal) SAE Straight Thread Boss Seals BS Extended Range

O‑ring Sizes: Standard and Metric O‑ring Sizes: Standard and Metric O‑ring Sizes: Standard Size Nominal Size Nominal Size inches inches ID Width

O-Ring Size Chart Dimensions Browse in-depth charts on o-ring and sealing product sizes to find the right seal for your application. View Guide O-Ring Tolerances Guide View inside diameter and cross section tolerance levels for o-rings in different size measurements. View Guide O-Ring Gland Design Guide Groove design is critical to o-ring success.

The standard sizes for o-rings include 20 sizes used to seal straight-thread tube fittings on a boss. A boss is a cylindrical projection on a casting or forging. The end of that projection is machined to provide a flat, smooth surface for sealing. Straight threads used with an o-ring provide a better seal than tapered threads used alone.

AS568 Number Nominal Actual Nominal Actual ID ID CS CS 001 1/32 0.029 1/32 0.040 002 3/64 0.042 3/64 0.050

Kalrez® Splice & Join O-rings can be produced in a broad range of customized cross-section and diameter dimensions to meet specific needs. Cross sections are 

O-rings are circular sealing elements with circular cross-sections, and are mainly used in static applications. The sizes are specified by the inside diameter and the cross section diameter. Our O-rings are manufactured according to metric and imperial international standards such as AS 568B, DIN ISO 3601 and JIS.

Technical Handbook O-rings 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. I.D. O.D. W.