O-ring
It is simple a loop of elastomer designed to be seated in a groove and compressed during assembly. It create static as well as dynamic sealing between surfaces by getting compressed. It is very simple but most widely used product. We make 'O' Rings in various sizes as well as Cross-Section. It is produced in nearly all type of materials like Silicone, FKM, Nitrile, EPDM, AFLAS etc.