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 6220-01-153-1937
NSN 6620-00-151-5363
NSN 6145-01-213-4904
NSN 5895-00-003-2291
NSN 5945-01-284-1748
NSN 5920-01-341-3597
NSN 5915-00-777-4296
NSN 4140-01-316-8407
NSN 2925-01-442-7812
NSN 6645-00-522-4173
NSN 5960-00-034-7925
NSN 6220-01-307-3181