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 5855-01-321-3881
NSN 5855-00-058-1293
NSN 5950-01-249-4645
NSN 5985-01-081-3567
NSN 2925-01-069-5324
NSN 5985-01-503-5181
NSN 6105-01-091-0512
NSN 5915-01-432-2491
NSN 5999-00-171-8858
NSN 6130-01-529-7934
NSN 6135-00-276-7625
NSN 6135-01-106-7740