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 5920-01-338-7130
NSN 5915-00-062-6127
NSN 5925-00-891-1674
NSN 5985-00-032-3640
NSN 5999-00-734-4686
NSN 5915-00-324-4874
NSN 6685-01-207-0666
NSN 6240-00-275-1950
NSN 4140-01-157-8882
NSN 6620-01-367-2597
NSN 2925-01-545-2717
NSN 6650-00-226-7099