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 5895-01-460-3915
NSN 5915-01-238-3272
NSN 5920-01-174-8540
NSN 5925-01-540-1616
NSN 5920-00-928-6721
NSN 5920-00-944-8772
NSN 5925-01-408-2652
NSN 2925-00-449-2478
NSN 6220-01-647-1608
NSN 6150-00-816-3467
NSN 5975-01-175-2057
NSN 6685-01-127-7885