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 6650-01-498-2633
NSN 6150-01-226-0534
NSN 5965-00-939-4495
NSN 4140-00-169-6428
NSN 5910-01-157-5261
NSN 2925-01-424-0235
NSN 6220-00-900-8951
NSN 6105-01-481-6980
NSN 5915-01-289-1187
NSN 6645-01-357-1393
NSN 4140-00-939-4940
NSN 5945-01-598-6451