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 6110-00-578-7243
NSN 5915-01-583-4168
NSN 6220-00-490-6092
NSN 5910-01-380-9970
NSN 5920-01-178-5167
NSN 6320-01-134-7267
NSN 6620-01-532-4147
NSN 4140-01-052-3562
NSN 6135-01-380-4396
NSN 5975-01-433-3096
NSN 6620-01-603-6442
NSN 5920-00-281-2488