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 5895-00-104-8294
NSN 6650-00-073-2709
NSN 6685-00-050-3697
NSN 6110-00-007-5283
NSN 5855-00-879-5849
NSN 5930-01-481-3424
NSN 6110-01-081-8599
NSN 2925-00-785-9328
NSN 5930-00-359-4260
NSN 6105-01-363-9225
NSN 5855-00-288-1408
NSN 5996-01-400-1640