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 6145-01-466-6731
NSN 5855-00-089-3974
NSN 5990-00-532-2641
NSN 6135-01-100-3593
NSN 5999-01-257-7600
NSN 5950-00-118-6247
NSN 5905-01-542-8115
NSN 6645-01-231-9891
NSN 6130-00-651-7326
NSN 5945-01-439-3331
NSN 6105-01-321-5639
NSN 5915-00-369-8422