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 5990-01-522-6096
NSN 5945-01-310-8487
NSN 5985-01-082-6233
NSN 6645-00-390-7657
NSN 5935-01-371-2192
NSN 5985-01-260-8583
NSN 6620-01-560-4497
NSN 5930-00-523-7887
NSN 6130-01-504-7001
NSN 5990-01-443-2931
NSN 5915-01-239-8546
NSN 5855-01-477-3241