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 5935-01-592-4439
NSN 5996-00-424-5266
NSN 5985-01-113-7837
NSN 5920-01-186-3953
NSN 5998-00-864-4881
NSN 6645-00-052-3201
NSN 5985-00-900-0544
NSN 6240-01-047-4085
NSN 7035-01-602-7966
NSN 5835-01-017-0958
NSN 6610-01-542-8825
NSN 5910-00-073-6292