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 6145-01-037-1272
NSN 5935-01-642-9218
NSN 6620-01-513-6358
NSN 6145-01-466-2004
NSN 6620-00-611-9935
NSN 5895-00-104-4583
NSN 6650-01-347-0148
NSN 5895-01-520-7476
NSN 6145-01-025-6514
NSN 6220-00-019-1945
NSN 6220-01-363-1312
NSN 5855-01-359-5727