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 6220-00-060-8123
NSN 4140-00-833-2952
NSN 6150-01-036-5054
NSN 5996-01-237-1615
NSN 5945-01-212-5480
NSN 5935-01-420-4791
NSN 6620-01-538-7174
NSN 6320-01-541-7585
NSN 6650-01-195-3957
NSN 2925-00-203-8735
NSN 5835-00-104-8944
NSN 5905-01-646-6992