A circular shaped item with an aperture manufactured to predetermined dimensions and designed for use as a seal in stuffing boxes, packing nuts, and the like. It may be (1) any nonmetallic molded or formed ring (except solid (without joint) rings having a square or rectangular cross section); or (2) any shredded metal or metal foil type metallic or semimetallic rings. Excludes felt items but includes multimaterial items in which one of the materials is felt. For solid (without joints) nonmetallic items with a square or rectangular cross section, see washer (as modified) and gasket. For rubber items specifically designed for weather-proofing doors, windows, chests, and the like see seal, nonmetallic angle; seal, nonmetallic channel; and seal, nonmetallic, special shaped section. For circular (with aperature) nonmetallic items with a solid round cross-section see o-ring. Excludes cup, compression; gasket; washer (as modified); and felt, mechanical, preformed.
Classification: Gaskets,washers & other seals
NSN 5965-01-645-8572
NSN 6145-00-146-7408
NSN 6220-01-166-7633
NSN 5999-01-607-0204
NSN 5855-01-362-7066
NSN 5965-01-408-5990
NSN 5945-00-174-6901
NSN 5990-01-183-6478
NSN 6645-01-660-3097
NSN 6650-01-507-9636
NSN 6110-01-203-0572
NSN 5950-00-553-9439