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 5998-00-707-1496
NSN 5996-00-568-8288
NSN 6685-01-016-2057
NSN 5910-00-092-3206
NSN 5925-00-542-9637
NSN 5960-01-094-7569
NSN 6220-01-375-3801
NSN 6320-01-177-3192
NSN 5915-01-165-6414
NSN 6240-01-179-1189
NSN 6130-01-334-3042
NSN 6150-01-241-3725