CS 3.55mm,Heat-Resistant Food Grade Silicone O-Ring,VMQ White/Red Rubber Seal O Ring,Thickness 3.55, ID 112-395mm - AliExpress
Danco O Rings
Team Losi Racing X-Ring Shock Seal Set [TLR233005] - AMain Hobbies
Cassette Spacers
uxcell Nitrile Rubber O-Rings 16mm OD 9mm ID 3.5mm Width, Metric Sealing Gasket, Pack of 50 : Buy Online at Best Price in KSA - Souq is now Amazon.sa: Industrial & Scientific