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 5905-00-396-2989
NSN 5998-00-862-5511
NSN 5998-01-252-0887
NSN 5855-01-290-0944
NSN 5930-00-336-9401
NSN 6650-00-134-5130
NSN 6150-01-535-1293
NSN 5930-00-538-7261
NSN 6645-01-008-2720
NSN 5960-00-109-2806
NSN 7035-00-703-3535
NSN 5999-00-097-8752