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 6145-00-789-7736
NSN 6145-01-359-1657
NSN 6110-01-220-5888
NSN 5990-01-054-3332
NSN 6135-01-426-4962
NSN 6145-01-529-2713
NSN 6130-01-474-8297
NSN 6320-00-593-0379
NSN 5998-01-659-7280
NSN 5910-01-135-6555
NSN 5998-00-015-9207
NSN 6135-01-202-8113