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 4140-01-026-1381
NSN 5920-01-261-0613
NSN 5855-00-361-0167
NSN 5925-00-471-4635
NSN 5930-01-156-8028
NSN 5910-01-395-6716
NSN 5998-01-575-5274
NSN 5996-01-622-2744
NSN 5945-01-095-4034
NSN 6105-00-273-1106
NSN 5998-01-097-3512
NSN 2925-01-362-2515