A rubber o ring or toroidal seal, is a very versatile sealing product and is produced in its millions to seal an aray of applications. Advantages of using an o-ring very compact and occupy a small amount of space, suit static and dynamic applications, seal efficiently in both directions, depending on material type can work between -65 and +325c and when in used in ptfe work at -200c. We stock standard o-rings in nitrile, viton, ptfe, silicone, epdm, neoprene and many non standard , miniature and micro sizes.