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 5915-00-837-3164
NSN 5998-01-388-2210
NSN 5990-01-190-8223
NSN 6645-01-495-0939
NSN 6220-00-205-2040
NSN 5998-01-023-2949
NSN 5945-01-134-7347
NSN 4140-00-097-0167
NSN 5950-01-651-3509
NSN 5990-01-446-9118
NSN 6135-01-087-7895
NSN 6685-01-485-3568