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 5905-01-015-8762
NSN 6105-00-530-5203
NSN 5999-01-634-0576
NSN 5965-00-421-9007
NSN 5950-01-529-6937
NSN 5990-00-402-3731
NSN 5990-01-649-4647
NSN 5960-00-989-1251
NSN 5855-01-533-0996
NSN 6150-01-426-8986
NSN 6110-01-116-2195
NSN 6645-00-192-1152