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 6320-01-384-3850
NSN 5975-01-564-1851
NSN 5985-01-513-3010
NSN 5985-00-867-0311
NSN 6645-00-818-9408
NSN 5999-01-212-6901
NSN 5915-01-316-8326
NSN 5996-00-969-6422
NSN 5895-01-441-1338
NSN 6320-01-422-1212
NSN 6150-01-118-7202
NSN 5965-00-217-2476