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 5920-01-167-5884
NSN 6645-00-539-1705
NSN 2925-01-437-1128
NSN 5998-01-422-0055
NSN 6105-00-598-4910
NSN 6105-00-391-5644
NSN 5915-00-206-0086
NSN 5998-01-167-8540
NSN 5915-01-392-7822
NSN 5925-00-252-1554
NSN 6110-01-474-4280
NSN 5835-00-140-8646