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 5910-01-559-6638
NSN 5925-01-412-2934
NSN 2925-01-471-3365
NSN 6135-01-200-5144
NSN 6150-01-495-3628
NSN 5935-00-146-4151
NSN 5950-00-629-8299
NSN 6150-01-010-1456
NSN 5895-01-167-7484
NSN 6130-00-868-9674
NSN 5930-01-423-8439
NSN 4140-00-481-0810