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 6320-00-422-9006
NSN 6240-01-063-7685
NSN 6150-01-493-7965
NSN 6150-01-622-3044
NSN 6650-01-354-9227
NSN 5935-00-194-8100
NSN 5960-01-450-4693
NSN 5935-00-052-1965
NSN 6645-00-412-8633
NSN 6620-01-475-1441
NSN 5855-01-350-4479
NSN 6145-01-244-6356