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 5920-01-094-7284
NSN 5975-01-499-6057
NSN 5975-00-963-7947
NSN 6620-01-206-4896
NSN 6620-01-088-1272
NSN 5930-01-231-5812
NSN 5945-00-844-2341
NSN 6135-01-069-2482
NSN 4140-01-445-8202
NSN 6240-01-329-8095
NSN 6150-01-167-8023
NSN 5998-01-144-4727