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 5975-01-302-8560
NSN 7035-01-501-7259
NSN 6220-01-435-4839
NSN 6135-00-577-8429
NSN 5965-01-157-2403
NSN 5960-01-270-6362
NSN 5985-00-847-1744
NSN 5985-00-950-8187
NSN 5925-00-650-1069
NSN 5920-01-466-1485
NSN 6150-01-460-0674
NSN 6150-00-928-4961