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 2925-00-739-5090
NSN 5999-00-666-0241
NSN 6145-01-096-7053
NSN 6150-00-710-7191
NSN 6240-01-580-0609
NSN 6650-01-014-7671
NSN 7035-01-397-5009
NSN 6130-00-133-7712
NSN 5960-01-155-1962
NSN 5835-01-652-4959
NSN 5835-01-257-0154
NSN 5915-01-417-4205