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 5990-01-341-5735
NSN 6135-01-199-1185
NSN 5985-01-365-9453
NSN 6645-01-305-1124
NSN 2925-01-464-3093
NSN 5925-00-244-0711
NSN 6150-00-339-1336
NSN 5895-01-502-3047
NSN 5895-00-197-7188
NSN 6130-00-936-8055
NSN 6645-00-808-1407
NSN 5985-01-087-8480