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 5990-01-633-9503
NSN 6130-01-370-6668
NSN 5990-00-251-0965
NSN 5965-01-538-0698
NSN 6650-00-957-0714
NSN 6130-01-065-5373
NSN 2925-01-534-7314
NSN 5965-00-831-2134
NSN 5910-01-514-0041
NSN 5915-01-525-9893
NSN 5985-01-184-2755
NSN 5996-00-196-7258