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 5990-00-999-5624
NSN 6320-01-173-7950
NSN 5960-00-647-9159
NSN 2925-01-603-6379
NSN 6135-00-553-7995
NSN 6620-01-446-4797
NSN 5996-01-449-3662
NSN 5910-00-939-8222
NSN 5975-01-316-1141
NSN 6145-00-753-2264
NSN 6685-01-102-5994
NSN 5950-01-262-9077