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 5985-00-119-7299
NSN 5835-00-572-7445
NSN 5975-01-364-8662
NSN 6130-01-429-9191
NSN 7035-01-412-3692
NSN 6135-00-505-0679
NSN 2925-00-103-6822
NSN 6220-01-450-5362
NSN 5945-00-346-6079
NSN 6135-01-487-0773
NSN 6650-00-018-7298
NSN 6110-00-049-5063