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 5905-01-306-3296
NSN 4140-00-860-1373
NSN 5895-01-574-9810
NSN 6685-01-592-4098
NSN 6650-01-074-8232
NSN 5975-00-117-5630
NSN 5975-00-324-2070
NSN 5975-01-219-5735
NSN 6645-00-300-0401
NSN 5920-01-216-0920
NSN 5915-01-125-6711
NSN 6620-01-375-6741