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 6645-01-446-5419
NSN 5835-00-853-7785
NSN 6135-01-127-0173
NSN 6650-00-554-1457
NSN 5950-01-574-0315
NSN 6220-00-448-9600
NSN 5996-01-316-9090
NSN 5935-00-701-7625
NSN 2925-01-265-2853
NSN 2925-01-157-9204
NSN 5950-01-454-6472
NSN 7035-01-585-5888