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 6320-00-360-1744
NSN 5975-01-288-3245
NSN 5965-00-578-1438
NSN 5930-01-157-1442
NSN 5999-01-274-0753
NSN 5915-00-885-0483
NSN 6110-01-430-2408
NSN 6145-01-171-0719
NSN 6105-01-381-0411
NSN 4140-01-460-8112
NSN 5920-01-270-7795
NSN 5998-01-337-5234