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 6320-01-503-7180
NSN 5990-01-616-5242
NSN 6240-00-822-4571
NSN 5910-01-484-0467
NSN 6650-01-246-4262
NSN 5895-01-085-5471
NSN 5920-00-378-1395
NSN 5990-00-772-9277
NSN 5915-01-063-7561
NSN 5935-00-959-0071
NSN 5960-00-241-2911
NSN 5925-01-313-8396