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 5930-00-073-9980
NSN 6610-00-072-0255
NSN 6620-00-130-0815
NSN 5945-00-419-4931
NSN 5915-01-385-8699
NSN 6620-01-296-0873
NSN 4140-01-232-1026
NSN 6620-01-397-4131
NSN 5905-01-270-2112
NSN 6145-01-529-7653
NSN 6110-00-103-5702
NSN 5935-00-117-8039