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 5935-00-230-9587
NSN 5999-00-753-7450
NSN 5945-01-621-8900
NSN 5935-01-408-5525
NSN 6150-01-576-1686
NSN 4140-00-052-2304
NSN 5915-01-394-4967
NSN 5975-00-514-8614
NSN 6685-01-046-1332
NSN 5985-00-503-9829
NSN 5999-01-367-6162
NSN 5945-01-504-6254