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 6105-01-188-8800
NSN 5935-00-269-5516
NSN 5925-01-181-8983
NSN 5965-00-698-0433
NSN 6130-00-960-9158
NSN 6150-01-040-7739
NSN 5960-00-893-2187
NSN 6645-01-093-5015
NSN 5910-00-100-5172
NSN 6650-00-119-9431
NSN 5950-00-283-7391
NSN 6320-01-129-9656