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 5950-01-196-5715
NSN 5935-01-168-0731
NSN 5915-01-438-6092
NSN 5998-01-350-4169
NSN 6220-01-364-3000
NSN 6320-00-539-9283
NSN 6650-00-566-5190
NSN 6320-01-134-7267
NSN 5935-01-180-3417
NSN 5985-01-462-0144
NSN 5990-01-312-2638
NSN 4140-01-601-2398