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 5835-01-537-1228
NSN 6150-01-105-9735
NSN 6145-01-589-9721
NSN 5920-01-432-7962
NSN 5990-01-054-4255
NSN 5915-01-303-8008
NSN 6610-01-534-8075
NSN 5910-01-037-4102
NSN 5990-01-540-1619
NSN 5960-01-377-1907
NSN 5915-01-615-3430
NSN 5855-00-281-3843