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 6150-00-983-7515
NSN 6240-01-519-0507
NSN 6650-01-367-2949
NSN 5975-01-352-5853
NSN 5905-00-541-1471
NSN 6650-01-350-0067
NSN 6320-00-853-1920
NSN 5920-01-439-8566
NSN 5915-01-107-9444
NSN 5960-01-658-9538
NSN 2925-01-462-1620
NSN 6650-00-890-0480