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 5975-00-703-0879
NSN 5998-00-216-7436
NSN 5935-01-537-2104
NSN 6110-01-045-1083
NSN 5998-01-336-1214
NSN 5975-01-569-5521
NSN 2925-00-126-2879
NSN 6240-01-032-5105
NSN 5998-00-278-4481
NSN 5965-00-296-9994
NSN 6150-00-288-6245
NSN 5996-00-597-2234