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 5910-01-461-8663
NSN 5996-01-443-8755
NSN 5905-01-433-2524
NSN 5999-00-736-6844
NSN 6130-00-853-7177
NSN 5855-01-428-9456
NSN 6650-01-044-9860
NSN 2925-00-233-5644
NSN 6240-00-163-5143
NSN 5915-01-370-3505
NSN 6240-00-104-4662
NSN 5975-01-445-9107