Captain O-Ring - Power Pressure Washer O-Rings for 1/4" Quick Coupler, EPDM (10 Pack) EPDM Rubber is compatible with many chemicals and cleaners Compatible with temperatures up to 300F (for higher temperatures, check out our Viton o-rings) Tear and abrasion resistant Comes in a package with 10 o-rings. Manufactured and warrantied by Captain O-Ring LLC