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 6240-01-444-0808
NSN 5920-01-514-8762
NSN 6320-01-622-5493
NSN 6620-01-293-6241
NSN 6320-01-170-4068
NSN 5945-01-386-0499
NSN 6150-01-219-7891
NSN 5960-01-328-8248
NSN 6135-01-048-0910
NSN 5935-00-187-7783
NSN 5925-00-981-9006
NSN 5975-01-034-5478