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 2925-00-221-8529
NSN 6645-01-362-2587
NSN 5915-01-430-3958
NSN 6150-01-158-1332
NSN 5920-00-626-8328
NSN 6105-01-616-3511
NSN 5915-00-794-9148
NSN 6685-01-446-7300
NSN 5950-01-056-4707
NSN 5915-00-938-5309
NSN 6110-00-153-0936
NSN 5965-01-111-0468