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 6220-00-411-9957
NSN 5945-01-326-0944
NSN 6150-00-928-2960
NSN 4140-00-111-3247
NSN 6650-00-578-6543
NSN 6130-01-305-7102
NSN 4140-00-169-6428
NSN 5990-01-537-1553
NSN 6685-01-119-3459
NSN 6130-01-050-1838
NSN 6240-01-417-1933
NSN 5945-01-132-4189