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 5996-01-493-7962
NSN 5998-01-301-8461
NSN 6130-00-144-8018
NSN 6145-01-476-8238
NSN 6110-00-548-2644
NSN 5915-01-622-3588
NSN 5999-00-151-7264
NSN 4140-01-262-7226
NSN 6135-01-020-3805
NSN 6130-00-369-6637
NSN 5915-01-484-3551
NSN 6240-00-435-0433