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 5910-01-025-2115
NSN 6150-01-020-7881
NSN 5920-01-514-0031
NSN 6240-01-047-4085
NSN 6610-01-534-8433
NSN 5905-01-317-8730
NSN 6105-01-332-3635
NSN 6135-00-369-2368
NSN 5855-01-580-0645
NSN 5965-01-399-8454
NSN 5996-00-064-4579
NSN 5965-00-931-6299