3mm X 100mm E70 EPDM 70 Duro Metric O-Ring [E3.00X100] : The O-Ring Store LLC, We make getting O-Rings easy!
High Temperature Silicone Rubber O ring (1 pair) for 100 mm dia Alumina or Quartz Tube - EQ-SOR-100
Fluorine Rubber O Ring 100mm OD 2.5mm Width FKM Round Sealing Washer Sealing Gasket Ring Faucet O-Ring, Green, Pack of 50: Amazon.com: Industrial & Scientific