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 2925-01-032-3814
NSN 5996-00-707-6228
NSN 5835-01-492-3143
NSN 6645-01-641-1575
NSN 5910-01-461-8545
NSN 7035-01-206-2623
NSN 5985-00-991-9007
NSN 5990-00-551-1315
NSN 5925-01-449-1559
NSN 5920-01-160-0057
NSN 5905-00-295-8630
NSN 6130-00-926-0860