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 5895-00-006-3135
NSN 6610-00-650-4328
NSN 5915-00-135-9642
NSN 5935-01-382-3385
NSN 5975-01-112-0872
NSN 4140-00-866-9587
NSN 6320-01-519-8767
NSN 4140-01-378-6710
NSN 5835-00-474-6085
NSN 5999-01-214-8420
NSN 5975-00-419-3256
NSN 6105-01-513-0310