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 6320-01-457-0893
NSN 5998-01-359-7729
NSN 6130-01-391-9754
NSN 5925-00-152-9399
NSN 5960-00-785-4274
NSN 5990-01-421-3325
NSN 5915-01-282-3918
NSN 6150-00-021-4835
NSN 5930-01-281-0646
NSN 5975-01-298-1940
NSN 4140-00-229-0915
NSN 4140-01-350-3277