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 6130-00-936-5987
NSN 6105-00-523-2869
NSN 5998-00-021-2329
NSN 5910-01-281-8697
NSN 2925-01-303-5266
NSN 5855-00-256-5562
NSN 5910-01-534-7699
NSN 7035-00-902-8995
NSN 5975-01-458-1578
NSN 5935-01-152-1241
NSN 5930-00-318-9133
NSN 5960-01-036-6320