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 6620-00-495-7438
NSN 5915-01-224-9516
NSN 5935-01-205-6071
NSN 5905-01-582-5123
NSN 5975-00-814-9263
NSN 5996-00-021-5624
NSN 5915-00-930-5322
NSN 6645-01-161-6926
NSN 5835-00-738-1099
NSN 5965-01-365-0101
NSN 5930-00-212-7435
NSN 7035-00-834-2090