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 6320-01-098-2503
NSN 5915-01-061-4415
NSN 4140-01-420-6817
NSN 6645-00-130-8464
NSN 7035-01-073-5233
NSN 5985-01-467-9502
NSN 5996-00-693-9568
NSN 6610-00-358-1905
NSN 5915-01-145-5340
NSN 5925-01-188-1170
NSN 5915-00-993-0386
NSN 4140-00-732-5444