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 6645-01-519-2220
NSN 5930-01-213-1903
NSN 2925-00-969-8340
NSN 6145-00-406-4471
NSN 5985-00-081-1885
NSN 7035-01-292-2580
NSN 6320-00-701-0437
NSN 5910-01-366-6306
NSN 5855-00-586-6255
NSN 5920-00-880-6581
NSN 5915-01-593-8937
NSN 5990-01-485-0260