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 5996-01-571-9384
NSN 5960-01-391-1308
NSN 5960-01-588-8410
NSN 6130-01-462-6084
NSN 6220-01-450-7909
NSN 5905-00-901-0483
NSN 5965-01-205-6249
NSN 5990-01-186-8310
NSN 5915-01-212-4457
NSN 6320-01-322-4950
NSN 6650-01-512-8103
NSN 5945-01-445-6081