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 5910-01-435-9090
NSN 7035-01-633-9537
NSN 5965-01-603-9506
NSN 6240-00-070-3659
NSN 6135-00-497-0491
NSN 5996-00-065-5343
NSN 5835-01-454-5267
NSN 5990-00-532-2641
NSN 6240-01-322-4887
NSN 5950-00-756-7134
NSN 6220-00-978-3172
NSN 5935-01-050-9171