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 5895-01-312-5780
NSN 5996-00-265-6573
NSN 6130-01-077-9474
NSN 4140-01-169-6237
NSN 2925-00-142-9919
NSN 6220-01-555-8332
NSN 6105-01-458-0763
NSN 6145-01-099-9118
NSN 5915-01-628-8760
NSN 6105-01-269-1988
NSN 5935-01-554-2450
NSN 5930-00-388-6758