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 5905-01-529-9987
NSN 6150-00-993-4696
NSN 5855-01-169-9228
NSN 6135-00-613-1068
NSN 5905-01-557-2636
NSN 5905-00-127-4292
NSN 5935-00-058-8507
NSN 6145-01-145-5177
NSN 6150-01-602-2834
NSN 5999-01-623-6300
NSN 5999-01-016-8795
NSN 5915-01-281-8559