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 6145-00-185-4515
NSN 6145-00-829-7469
NSN 5895-00-236-3294
NSN 6110-01-462-4716
NSN 6650-00-055-8254
NSN 5998-00-339-7052
NSN 6130-01-333-4817
NSN 5945-01-111-9711
NSN 5945-00-883-3154
NSN 5998-00-633-5169
NSN 5895-00-724-8126
NSN 6620-01-275-9777