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 6105-01-203-9963
NSN 5835-01-435-4139
NSN 5910-01-370-5329
NSN 4140-01-634-0330
NSN 6150-01-168-8290
NSN 6645-00-221-1058
NSN 5920-01-212-9908
NSN 5895-00-175-6415
NSN 5965-01-633-7662
NSN 5950-01-218-2986
NSN 6320-01-301-4699
NSN 5990-00-759-1450