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 5915-01-382-0517
NSN 6685-00-362-1649
NSN 6110-01-575-8471
NSN 6610-00-419-0315
NSN 6105-00-462-9723
NSN 6320-01-631-7828
NSN 6145-00-553-8196
NSN 5985-00-399-1174
NSN 6610-00-347-7860
NSN 5935-00-603-0466
NSN 6645-01-434-0248
NSN 6130-01-337-3521