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 5855-01-250-2421
NSN 5985-01-535-6924
NSN 6145-01-449-2513
NSN 6145-01-490-6991
NSN 6650-01-029-5414
NSN 6150-00-232-6568
NSN 5930-01-651-1523
NSN 6685-01-242-8061
NSN 6685-01-353-5888
NSN 5935-01-110-3382
NSN 6620-00-679-5830
NSN 5915-01-642-8845