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 6150-01-296-0896
NSN 6650-00-067-3572
NSN 5950-01-324-1665
NSN 6130-01-450-8903
NSN 5950-01-393-2283
NSN 5996-00-146-7998
NSN 4140-01-210-4233
NSN 7035-00-392-5417
NSN 5905-00-985-2745
NSN 5975-00-371-6592
NSN 5950-01-546-9053
NSN 6320-00-688-9983