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 6685-01-417-4159
NSN 2925-01-206-5232
NSN 6130-01-167-1503
NSN 6130-01-593-7405
NSN 5985-01-281-3801
NSN 6130-00-904-3374
NSN 6110-01-568-9540
NSN 6645-01-252-9659
NSN 5996-01-400-1640
NSN 5835-01-597-4820
NSN 6130-00-853-6276
NSN 6220-00-115-2320