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 6320-01-209-0952
NSN 6240-00-607-4303
NSN 6645-01-434-0248
NSN 5945-01-332-5636
NSN 5855-01-429-9822
NSN 5990-01-395-4194
NSN 6130-01-207-9991
NSN 5985-01-233-0512
NSN 6105-00-004-1276
NSN 6220-01-381-1793
NSN 6110-01-633-9461
NSN 6685-01-142-3201