Amazon.com: JUN-STORE O-Rings CS2.62mm NBR X Ring 5PCS ID 59.99/58.42/56.82/55.25/53.65x2.62mm Double Acting Seal X-Seals Quad Ring AS568 Standard XRing SENMIAO-TH (Size : ID59.99x2.62mm) : Industrial & Scientific
Sterling Seal XP70BUN130X10 130 Quad Ring, Buna NBR, 70 D (Pack of 10): Amazon.com: Industrial & Scientific