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 6650-01-487-4949
NSN 6650-01-463-2274
NSN 6135-00-269-5843
NSN 6130-00-401-5556
NSN 6150-01-608-5939
NSN 6320-01-162-5977
NSN 5998-01-032-4391
NSN 5910-01-583-4482
NSN 6620-01-044-3371
NSN 5855-01-191-3404
NSN 6685-00-628-5305
NSN 5905-01-510-9397