High Temperature Silicone Rubber O ring (1 pair) for 25-26 mm dia Alumina or Quartz Tube - EQ-SOR-25
O-Ring 5 Pack – Tactile Turn
Flyshop 10 Pcs Clear White Silicone Sealing Rings O Ring Gasket 0.75" OD 0.5" ID 0.12" Width 19mm OD 12.8mm ID 3.1mm Width: Amazon.com: Industrial & Scientific
Straw Lid O-Ring- Two Pack – ThermoFlask
300mm Silicone Gaskets | Silicone Gasket Ring Seal | Ring Silicon Gaskets - 30pcs - Aliexpress