O-Rings Size Chart for Standard O-Ring Dimensions
We supply all styles of O-rings. AS568 O-rings are an SAE standard most commonly used. Refer to the standard O-ring size chart below to help you find the AS568 O-ring size you need. Once you have the AS568 dash size you need, select a compound from the Chemical Compatibility table.
Should you have any questions, our team of applications engineers can help. Contact us or read through the O-Ring Considerations blog post for more information.
Provided file /www/wp-content/uploads/2023/10/o-ring-chart-v4.csv does not exist!
Over a million o-rings are available from inventory in many standard and non-standard sizes. We work with leading o-ring suppliers such as Parker and Freudenberg to maintain inventory of popular sizes, and to easily order items that are not readily available. Our o-rings are made from many compounds, including but not limited to:
FFKM O-Rings
Perfluoroelastomer (FFKM; Kalrez) O-rings offer resistance to the highest temperatures of any rubber, coupled with extremely broad chemical compatibility and very low extractable levels.
FKM Viton O-Rings
(FKM/fluorocarbon) Viton O-rings offer strong chemical compatibility with good high-temperature performance and good compression set resistance.
Fluorosilicone
O-Rings
Good resistance to fuel, oil and solvent resistance for ozone, aromatic hydrocarbons, sunlight and chlorinated materials.
Neoprene O-Rings
Cost-effective solution for good ozone resistance, and fair resistance to petroleum oils.
Silicone O-Rings
Long life against sunlight and ozone in dry heat applications.
Buna-N O-Rings
(NBR, nitrile) excellent oil, fuel and petroleum resistance. Good for greases, hydraulic fluids, water.
Ethylene Propylene O-Rings
(EPDM) Good for resistance to steam/hot water, alkalies, alcohol, automotive fluids.
Non-Standard Size O-Rings
For non-standard or larger sizes we offer non-molded, spliced and vulcanized O-Rings for select materials.
Request a Quote
Contact Us for Assistance or Samples
When specifying O-Rings be sure to include the standard dash size, material, and durometer along with any other requirements or standards.
( Ex. AS568 Size 2-011 Silicone 50 Durometer, meeting AMS 3304)
Contact Us
Compare O-Ring Materials and Chemical Compatibility
Compare O-Ring materials and O-Ring chemical compatibility with this chart.
View Chart