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 5915-01-035-7448
NSN 5855-01-605-2438
NSN 6220-01-100-5093
NSN 5935-01-258-3430
NSN 5996-01-512-2040
NSN 6135-01-322-4655
NSN 6650-01-574-0019
NSN 6130-00-528-7838
NSN 5855-01-461-8169
NSN 5930-01-010-2865
NSN 5996-01-322-1486
NSN 6135-00-764-8680