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 6135-00-107-6662
NSN 6320-01-462-2295
NSN 5915-00-518-4656
NSN 5975-00-989-2027
NSN 5930-00-056-0792
NSN 5935-00-459-2275
NSN 6110-01-558-3148
NSN 6650-00-542-9042
NSN 6645-01-545-7411
NSN 6135-00-152-8729
NSN 6110-00-321-1271
NSN 5985-01-145-7353