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 6650-01-519-9165
NSN 5915-00-414-1654
NSN 6240-01-512-1856
NSN 6105-01-152-7059
NSN 5985-00-478-7017
NSN 6610-01-362-8686
NSN 5855-01-098-9038
NSN 5998-00-465-7812
NSN 5945-01-472-1956
NSN 5999-01-289-0885
NSN 5925-00-578-4774
NSN 6130-01-206-3126