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 6145-01-150-1557
NSN 5920-00-515-3617
NSN 6110-01-443-9475
NSN 2925-01-477-3787
NSN 5935-01-155-3752
NSN 5920-00-221-5131
NSN 6645-00-410-2395
NSN 2925-01-231-6312
NSN 6645-01-644-3850
NSN 2925-00-909-2596
NSN 6110-01-378-7496
NSN 6645-00-226-2270