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 6645-01-364-0867
NSN 5999-01-604-9271
NSN 6645-01-111-9825
NSN 7035-00-392-5417
NSN 4140-00-052-4815
NSN 4140-01-486-3873
NSN 5910-01-016-8702
NSN 5945-01-371-9101
NSN 5999-01-642-7053
NSN 6685-01-063-7425
NSN 6650-01-651-3713
NSN 5855-00-149-0766