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 6645-00-907-3404
NSN 6685-01-195-6549
NSN 6645-01-118-0700
NSN 5960-01-398-4883
NSN 5999-01-386-4008
NSN 6220-01-147-9180
NSN 7035-01-297-9806
NSN 5985-01-104-4324
NSN 6105-01-026-4749
NSN 4140-01-260-8106
NSN 5935-01-257-9269
NSN 6650-01-145-5173