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 5910-00-524-4387
NSN 2925-00-041-0439
NSN 5905-01-316-9512
NSN 6220-01-443-9315
NSN 6135-01-375-6724
NSN 5935-00-003-9149
NSN 5855-00-832-9341
NSN 5905-00-903-9714
NSN 5905-01-426-2777
NSN 5935-00-904-3611
NSN 6145-01-301-9506
NSN 5835-01-495-0595