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 6150-01-364-1023
NSN 6105-00-208-1803
NSN 5998-00-068-3303
NSN 5855-01-027-1571
NSN 4140-01-061-6944
NSN 5960-00-275-7497
NSN 5960-01-198-2244
NSN 6320-01-643-0850
NSN 5835-01-081-9345
NSN 5925-01-359-4814
NSN 6645-01-571-6404
NSN 6135-01-066-6904