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 5915-00-416-3823
NSN 5999-01-641-0704
NSN 6135-00-826-4798
NSN 5925-01-231-8241
NSN 6110-01-387-8278
NSN 5855-01-323-5394
NSN 5960-01-628-2760
NSN 5855-00-058-1293
NSN 5920-00-974-4381
NSN 4140-01-223-7788
NSN 5835-01-160-7282
NSN 6110-01-519-2282