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 5998-01-496-7666
NSN 4140-01-017-2648
NSN 6130-01-345-9712
NSN 5975-01-227-4967
NSN 5985-01-247-7403
NSN 5960-01-624-1170
NSN 5835-00-491-6075
NSN 5999-00-182-8908
NSN 6135-00-497-0491
NSN 5935-01-258-5059
NSN 6240-00-027-9931
NSN 4140-01-097-6158