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 6130-00-891-4849
NSN 6110-01-152-1097
NSN 6610-01-412-0058
NSN 5855-01-120-7831
NSN 5996-00-336-3046
NSN 6135-01-164-3561
NSN 5960-01-588-1441
NSN 6145-01-267-6308
NSN 6135-00-767-0331
NSN 5996-01-509-6443
NSN 6320-01-576-6310
NSN 6650-01-455-4327