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 6150-01-412-1123
NSN 5960-01-065-9684
NSN 6240-01-012-0831
NSN 6220-00-507-9831
NSN 5895-01-487-7032
NSN 7035-00-117-0418
NSN 5910-01-216-3826
NSN 6130-00-558-6112
NSN 6105-01-341-6142
NSN 5835-00-660-4523
NSN 6220-01-132-3137
NSN 6650-01-066-9792