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 5999-00-894-3260
NSN 6135-00-127-1683
NSN 6110-01-106-2193
NSN 6645-01-618-8501
NSN 5960-01-553-4557
NSN 5935-01-023-7287
NSN 6240-01-178-5141
NSN 5905-00-568-8710
NSN 5945-01-459-9577
NSN 6135-01-505-1293
NSN 5950-01-252-7710
NSN 6240-01-095-7968