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 5930-01-099-3685
NSN 4140-01-294-4044
NSN 5975-01-229-8786
NSN 6105-00-833-8045
NSN 5930-01-363-8647
NSN 5915-01-232-6058
NSN 5910-01-452-4866
NSN 5920-01-152-1949
NSN 6150-00-284-9133
NSN 6320-00-242-3300
NSN 5975-00-448-3179
NSN 6320-01-245-5307