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 5910-01-537-2037
NSN 5920-01-236-4305
NSN 5855-00-763-2155
NSN 6620-01-611-7907
NSN 7035-00-360-2008
NSN 5925-01-015-4493
NSN 5999-00-691-4372
NSN 5950-00-409-5822
NSN 5935-00-135-2130
NSN 6150-00-660-8331
NSN 5915-01-421-4352
NSN 5920-01-432-0499