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 5925-01-097-4925
NSN 6150-00-681-8380
NSN 5835-01-502-9228
NSN 5930-01-481-4233
NSN 5915-00-959-5454
NSN 6645-00-397-2210
NSN 5935-01-596-4417
NSN 5855-01-109-1807
NSN 5998-01-440-9001
NSN 4140-00-101-7903
NSN 5920-00-815-5599
NSN 5965-00-469-5009