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 5935-01-452-6359
NSN 6620-00-425-7475
NSN 5998-00-299-2740
NSN 6320-01-299-6367
NSN 5835-00-770-2843
NSN 5855-01-430-5459
NSN 6645-01-155-3966
NSN 5999-00-591-1682
NSN 5920-01-561-5487
NSN 5905-00-213-8015
NSN 6145-00-524-9130
NSN 5999-01-468-8378