Amazon.com: KHJK Useful CS1.8mm EPDM O Ring 100PCS ID 7.9/8/8.5/8.75/9/10/10.6x1.8mm O-Ring Gasket Seal Exhaust Mount Rubber Insulator Grommet ORING (Size : ID13.2x1.8mm) : Industrial y Científico
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FKM O-ring kit classification thickness 1/1.5/1.9/2.4/3.1mm fluororubber gasket seal ring group high temperature combination kit - AliExpress