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 5990-00-140-4559
NSN 6145-01-107-2896
NSN 6645-01-598-3976
NSN 5945-01-465-8446
NSN 6650-00-009-1427
NSN 6135-00-145-8884
NSN 6240-00-777-8535
NSN 6685-00-146-9358
NSN 6220-01-303-9442
NSN 5915-01-243-2961
NSN 6620-01-116-3983
NSN 6150-01-504-9521