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 6110-01-305-0012
NSN 5998-00-633-5169
NSN 6220-01-207-5325
NSN 5910-01-459-9092
NSN 6240-01-322-4375
NSN 5855-01-289-5797
NSN 6650-01-359-4238
NSN 6105-01-634-0322
NSN 6240-01-444-1519
NSN 5835-00-126-2961
NSN 5998-00-975-4879
NSN 7035-01-131-1168