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 5920-00-735-0783
NSN 6650-01-557-4143
NSN 7035-01-487-4038
NSN 5975-01-397-2831
NSN 6240-00-356-6908
NSN 5835-01-027-0597
NSN 4140-01-570-8947
NSN 7035-00-731-8729
NSN 5895-01-634-0630
NSN 5835-00-233-6327
NSN 6650-00-050-0476
NSN 5945-00-560-3218