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 5996-00-967-9263
NSN 6110-01-272-8669
NSN 4140-01-412-9330
NSN 5945-01-325-3668
NSN 5965-00-932-4591
NSN 5920-01-607-2873
NSN 6320-00-578-6898
NSN 5920-01-475-7715
NSN 5925-01-579-0785
NSN 6220-01-564-5670
NSN 5835-01-182-1966
NSN 5915-01-206-4382