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405 O-Ring, EPDM, 70A Durometer, 2" ID, 2-1/2" OD, 1/4" Width, Black (Pack of 10): Amazon.com: Industrial & Scientific
E70131 | Global O-Ring and Seal
4253 O-Ring | Buy an Aquafine EPDM O-Ring for Quartz Sleeve All Non-Ozone Models - Serv-A-Pure
Pentek 151120-EPDM, EPDM O-ring for Standard & 3G Standard Housings | Serv-A-Pure