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 6150-00-422-2040
NSN 6145-01-209-0842
NSN 5930-01-398-0656
NSN 6320-01-459-6992
NSN 6220-01-565-3212
NSN 5915-00-323-1262
NSN 5920-01-093-1081
NSN 6105-01-275-1031
NSN 5998-01-154-5315
NSN 5998-01-343-0253
NSN 5855-01-320-7640
NSN 6150-00-075-4965