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 5990-01-507-1479
NSN 5990-01-170-0077
NSN 6650-00-552-8377
NSN 6645-01-453-7297
NSN 6240-01-492-8172
NSN 5920-01-200-0683
NSN 7035-00-631-3782
NSN 6685-01-530-9426
NSN 7035-01-443-3052
NSN 6220-01-150-7287
NSN 5920-01-044-5621
NSN 4140-01-204-6716