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 5915-01-567-1928
NSN 5835-01-478-9428
NSN 5998-00-375-4259
NSN 6220-01-451-1577
NSN 6610-01-224-7247
NSN 6135-00-725-5132
NSN 6240-01-442-7746
NSN 5855-01-276-5447
NSN 6135-01-420-5907
NSN 5915-01-364-7917
NSN 5915-00-042-4619
NSN 6685-01-050-7026