13/16 x 1 x 3/32 Viton O-Ring (5 pieces): Amazon.com: Industrial & Scientific
Amazon.com: Viton Sheet Rubber – High Performance, High Temperature, Chemical Resistant, Much More - Commercial Grade 75A+/-5 Medium Hardness, Cinnamon Scented 125x6x6 : Industrial & Scientific
USA SEALING ZUSAV3X120 Chemical Resistant Viton O-Rings, 120 mm ID, 126 mm OD: Amazon.com: Industrial & Scientific