001-1/2 EPDM O-Ring, 70A Durometer, Round, Black, 1/16" ID, 1/8" OD, 1/32" Width (Pack of 25): O Ring Seals: Amazon.com: Industrial & Scientific
Onlinepoolshop.com : Hayward TBB1030TPEG 3-Inch Gray PVC TBB Series True Union Ball Valve with EPDM O-rings and Threaded End Connection : Chemicals Water Testing Products