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 5960-01-381-2478
NSN 5895-01-351-3203
NSN 5965-01-519-1214
NSN 6145-00-110-7459
NSN 6650-01-072-6393
NSN 5910-01-160-9062
NSN 6240-00-082-1142
NSN 6130-00-148-8784
NSN 5915-00-898-1875
NSN 6240-01-612-2252
NSN 5975-00-056-8600
NSN 5990-01-364-0813