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 6650-01-591-5057
NSN 6610-01-039-9295
NSN 5915-01-144-9172
NSN 5975-00-111-6781
NSN 5999-01-254-2763
NSN 5975-01-473-2767
NSN 5910-01-202-1286
NSN 5910-00-860-8955
NSN 6620-01-029-3705
NSN 5965-00-208-4896
NSN 5930-01-204-1087
NSN 5975-00-110-6171