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 5999-01-013-1120
NSN 5910-01-204-8768
NSN 6685-00-994-1027
NSN 6320-00-575-6072
NSN 5975-00-098-5464
NSN 5905-01-360-4263
NSN 5925-01-603-8721
NSN 5965-00-285-0745
NSN 6685-00-754-7495
NSN 5915-01-451-4332
NSN 6150-01-352-3995
NSN 6150-00-844-6205