Standard O-Rings are available in 369 sizes as set up by the Aerospace Standard 568 published by the Society of Automotive Engineers. These sizes are designated by dash numbers shown on the 568 DASH Chart and are standardized by imperial dimensions. Standard O-Rings are specified by their inside diameter and cross section width. AS568 is the most commonly used standard in the U.S. for aerospace, automotive and general industrial applications. For more information, please see: Comparison Properties Chart, PTFE Encapsulated O-rings, Material Shelf Life, and O-ring Groove Design Chart. EP is also known as: Eythylene Propylene, EPR, EPDM, EPT, E.

EP is an elastomer which is characterized by wide range of applications and good chemical resistance. Ethylene propylene compounds have good resistance to detergents, alkalis, mild acids, greases, silicone oils, and alcohols.
Request For Quote Search by Specification
Unit of Measure
Items
AS568 Buna O-Rings

AS568 EP O-Rings
AS568 Buna O-Rings

AS568 EP O-Rings
AS568 Buna O-Rings

AS568 EP O-Rings
AS568 Buna O-Rings

AS568 EP O-Rings
AS568 Buna O-Rings

AS568 EP O-Rings
Type N/A
Material
N/A
Cross Section Width
N/A 0.040 in N/A 0.050 in N/A 0.060 in N/A 0.070 in N/A 0.070 in
Durometer
N/A 70
Inside Diameter
N/A 0.74 mm0.029 in N/A 1.07 mm0.042 in N/A 1.42 mm0.056 in N/A 1.78 mm0.070 in N/A 2.57 mm0.101 in
Cross Section Tolerance +/- N/A 0.003 in0.08 mm
Inside Diameter Tolerance +/- N/A 0.004 in0.10 mm N/A 0.004 in0.10 mm N/A 0.004 in0.10 mm N/A 0.005 in0.12 mm N/A 0.005 in0.12 mm
Size Reference - AS568 N/A -001 N/A -002 N/A -003 N/A -004 N/A -005
Alternate P/N N/A
Units of Measure N/A
Tube Size O.D. N/A
Call for a Quote N/A
O-Ring Industries N/A O-rings are used in the military defense and agriculture industries.