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 6320-01-643-0850
NSN 7035-00-887-4674
NSN 5930-01-330-4832
NSN 6130-01-468-5176
NSN 5915-01-484-9097
NSN 6150-01-100-3908
NSN 5990-01-124-9063
NSN 6610-01-253-5112
NSN 5999-00-854-2148
NSN 6150-01-442-4997
NSN 5935-01-221-8254
NSN 5950-01-615-8492