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 6220-00-034-7280
NSN 6320-01-098-2503
NSN 2925-01-282-3206
NSN 5925-01-174-6558
NSN 5960-01-416-6187
NSN 5990-00-075-7508
NSN 5920-00-248-3038
NSN 5855-00-235-2676
NSN 6650-00-451-8174
NSN 6135-01-291-6712
NSN 6220-00-354-8287
NSN 5855-00-189-6066