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 5975-01-595-0218
NSN 6110-01-124-6864
NSN 2925-01-508-4138
NSN 4140-00-899-3086
NSN 6650-00-994-6883
NSN 5855-01-546-2190
NSN 6110-01-484-8974
NSN 6650-00-597-7313
NSN 6650-00-490-2637
NSN 5925-00-876-9219
NSN 5965-01-176-1556
NSN 6110-01-051-3053