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 5999-01-022-9170
NSN 5985-01-131-4488
NSN 6145-00-059-5606
NSN 6145-01-327-1821
NSN 6320-01-160-8578
NSN 6135-01-151-2705
NSN 5920-01-113-5881
NSN 5910-00-269-3714
NSN 7035-01-321-1555
NSN 6320-01-017-5274
NSN 6130-01-026-0258
NSN 5895-00-248-7477