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 5915-00-518-0851
NSN 5935-01-133-3941
NSN 5985-00-237-5419
NSN 5965-00-716-7078
NSN 5835-01-592-2350
NSN 6645-01-484-9847
NSN 6645-01-589-0983
NSN 5985-01-581-7171
NSN 6650-01-240-2334
NSN 5925-00-446-2464
NSN 5985-01-017-6381
NSN 5990-00-428-1895