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 7035-01-620-0131
NSN 5925-01-100-8474
NSN 5996-01-342-8760
NSN 4140-01-462-4242
NSN 5925-01-397-4444
NSN 6105-00-113-5558
NSN 6685-01-109-5156
NSN 5975-01-014-4648
NSN 5920-01-477-1617
NSN 6650-01-013-9958
NSN 5920-01-206-3977
NSN 5985-01-283-8867