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 5905-01-009-4172
NSN 5905-01-628-7980
NSN 5950-01-495-2652
NSN 6320-01-422-1212
NSN 6220-00-195-4655
NSN 5945-01-240-5263
NSN 6645-00-558-0028
NSN 5945-01-269-6007
NSN 6130-01-646-9992
NSN 6620-00-632-3631
NSN 5920-00-627-8737
NSN 5855-01-141-8227