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 6685-01-422-2229
NSN 5910-00-710-6617
NSN 6110-01-449-5908
NSN 5965-00-820-0469
NSN 5985-01-462-4435
NSN 6135-01-512-8105
NSN 6150-00-624-8718
NSN 5985-01-472-6637
NSN 6135-01-516-4638
NSN 5990-01-267-6971
NSN 6620-01-142-8494
NSN 7035-01-311-8424