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 4140-01-349-4447
NSN 6610-01-326-0119
NSN 6240-00-099-8606
NSN 5925-01-300-8337
NSN 6645-01-303-8336
NSN 6220-00-169-6516
NSN 5990-01-541-7671
NSN 5920-01-144-1500
NSN 6135-01-069-2482
NSN 5960-00-608-6711
NSN 6610-01-058-2366
NSN 6150-00-398-6527