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 5996-00-992-8853
NSN 5930-01-446-7247
NSN 5855-01-408-3154
NSN 4140-01-008-4354
NSN 2925-01-587-3956
NSN 6220-00-517-9300
NSN 6620-00-959-6614
NSN 5915-01-459-7486
NSN 6645-00-927-8207
NSN 4140-00-119-1689
NSN 6150-00-776-2738
NSN 5965-01-587-8853