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 5965-01-443-3000
NSN 4140-01-599-8434
NSN 5920-01-200-0683
NSN 6130-01-268-1703
NSN 5999-01-231-2690
NSN 5985-01-225-8353
NSN 5960-01-624-1170
NSN 5985-00-654-9744
NSN 5975-00-923-5227
NSN 6685-00-753-2896
NSN 5855-00-337-3679
NSN 6145-00-736-8338