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 2925-01-408-6205
NSN 7035-01-023-1008
NSN 6145-01-164-9824
NSN 6135-01-225-9827
NSN 5985-00-212-7690
NSN 6650-01-629-9480
NSN 5985-01-422-2552
NSN 6645-00-574-9712
NSN 6645-00-270-6817
NSN 5999-01-492-6964
NSN 6685-00-865-7939
NSN 5935-01-394-3415