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 5945-01-045-4807
NSN 5985-00-545-6235
NSN 5996-01-386-2843
NSN 5920-01-650-4083
NSN 6130-00-097-0395
NSN 6150-00-989-6666
NSN 5855-01-208-1471
NSN 5975-01-068-2089
NSN 7035-01-132-7209
NSN 6150-01-643-4862
NSN 5998-01-261-3081
NSN 6130-01-463-1701