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 2925-01-208-6638
NSN 5925-01-206-3488
NSN 5985-01-154-6359
NSN 5835-00-269-2232
NSN 6135-01-430-3119
NSN 6110-01-394-9891
NSN 5905-01-045-0062
NSN 5855-00-455-6070
NSN 5985-01-619-4013
NSN 6150-01-129-3951
NSN 6240-01-467-3341
NSN 5835-00-280-8494