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 5895-01-264-5260
NSN 5920-00-725-9493
NSN 6135-01-449-2144
NSN 5920-01-314-0388
NSN 5920-01-569-1383
NSN 5985-00-253-1680
NSN 5925-00-770-4068
NSN 5920-01-622-6862
NSN 6220-01-146-5152
NSN 6320-01-481-7322
NSN 5975-01-510-0479
NSN 5965-01-199-8362