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 6105-00-153-0238
NSN 5855-01-634-0259
NSN 5965-00-768-4366
NSN 5945-01-118-8385
NSN 6320-00-701-0437
NSN 6650-00-754-2276
NSN 6650-00-382-6080
NSN 6320-01-618-7800
NSN 6130-01-237-3295
NSN 5985-00-168-4329
NSN 6685-01-537-2785
NSN 6240-00-402-4481