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 6650-00-624-3686
NSN 6685-01-531-5963
NSN 5920-01-634-0250
NSN 6685-01-308-5687
NSN 2925-01-446-6976
NSN 6620-01-487-8735
NSN 6135-00-497-0491
NSN 5915-00-156-7877
NSN 6645-01-089-6459
NSN 5999-00-189-0032
NSN 5998-01-026-5540
NSN 5999-01-582-6796