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 6620-01-313-3755
NSN 5985-01-006-9919
NSN 6320-00-456-0836
NSN 5996-01-500-1830
NSN 5998-01-454-6470
NSN 5905-01-268-3877
NSN 2925-01-344-6073
NSN 5915-00-928-8267
NSN 5915-01-610-1828
NSN 4140-00-640-1228
NSN 6610-01-348-5719
NSN 5920-01-141-6885