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 5950-01-217-3838
NSN 5835-00-148-9719
NSN 5996-00-926-7806
NSN 2925-00-914-7627
NSN 6620-01-337-5668
NSN 6320-01-462-2295
NSN 5945-01-378-5654
NSN 5935-01-592-7590
NSN 5950-00-236-3961
NSN 5965-00-452-0967
NSN 5920-01-290-0820
NSN 6650-00-337-3597