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 5975-01-023-8403
NSN 5960-01-359-6630
NSN 5996-01-118-9475
NSN 5925-00-734-1441
NSN 6240-01-555-8365
NSN 6645-00-719-9177
NSN 6650-00-520-5785
NSN 6320-00-593-0379
NSN 5910-01-264-0102
NSN 5910-01-592-2746
NSN 6240-01-415-5581
NSN 5895-01-435-9248