o-ring specification

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.

Groove Design for correct O-ring dimensions: calculation for piston seals, rod seals and flange seal.

All Standard O-Rings are available in a choice of six basic compounds in Durometers 40 through 90, Shore A Hard- ness, to satisfy most O-Ring sealing 

826PC O-RING SET: This large rubber O-ring set by Orion Motor Tech includes 407 SAE O-rings and 419 metric O-rings in the 32 most needed sizes; SAE O-rings range from -006 to -226 and metric O-rings cover inner diameters from 3 to 50mm and outer diameters from 6 to 57mm ; BUILT TO LAST: Each piece of our huge O-ring kit is constructed from top

on O-ring drive belts and their application will be found in O-Ring Applications, Section III. 1.2 What is an O-Ring Seal? An O-ring seal is used to prevent the loss of a fluid or gas. The seal assembly consists of an elastomer O-ring and a gland. An O-ring is a circular cross-section ring molded from rubber (Figure 1-1).

The standard sizes used in the United States are defined by Aerospace Standard AS568B, Aerospace Size Standard for O-rings. 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. The first five series are based on cross-sectional diameter.

This O-ring size chart provides a list of standard AS568 O-ring sizes. Most industries consider AS568 specifications, standard O-ring sizes. Each AS568 dash number is a unique number that denotes specific O-ring dimensions. If you need to know how to size an O-ring, consider starting with these AS568 O-ring sizes so you will not have to

Size C.S. Inch I.D. Inch O.D. Inch C.S. MM I.D. MM O.D. MM 001: Order This Size 0.040 0.029 0.109 1.02 0.74 2.78 002: Order This Size 0.050 0.042 0.142 1.27 1.07 3.61 003: Order This Size 0.060 0.056 0.176 1.52 1.42 4.46

Click on the materials chart below to find detailed specifications information for each of our popular rubber materials. The information can also be downloaded in PDF. Use this information for your rubber part or O-ring seal in order to find the exact material for your application. Nitrile 70. Nitrile 90. Viton 75. EPDM 70. Silicone 70.

For the experienced O-ring seal designer: 1. Determine the gland design for best sealing results. (a) If the fluid medium or its specification is known,.

There are three Dimensions that you need in order to obtain the perfectly sized O-Ring for your application. These are the Outside Diameter