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 5935-01-092-0271
NSN 5996-01-410-6811
NSN 6150-01-634-0575
NSN 5998-01-400-1786
NSN 6320-01-162-5977
NSN 6135-01-355-8917
NSN 6650-01-367-5172
NSN 6130-00-525-9975
NSN 5905-00-470-1998
NSN 6645-00-857-0410
NSN 5920-01-398-0580
NSN 5990-01-171-3547