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 6135-01-426-8282
NSN 5975-00-841-5857
NSN 6135-01-163-0332
NSN 6620-01-025-3750
NSN 6620-01-082-2483
NSN 6110-01-357-6357
NSN 5855-00-288-1408
NSN 5915-00-030-7193
NSN 5998-01-563-8591
NSN 6130-01-446-5319
NSN 5925-01-658-6422
NSN 6130-00-200-5531