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 5910-01-177-6210
NSN 5855-01-511-2614
NSN 6650-00-007-4372
NSN 6220-01-185-1136
NSN 5920-00-521-2981
NSN 5920-01-357-8053
NSN 5855-01-003-7102
NSN 5905-01-481-3943
NSN 6135-01-056-4609
NSN 5895-00-471-5711
NSN 6110-01-603-0989
NSN 2925-01-035-7699