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 5960-01-003-8480
NSN 5935-00-957-6881
NSN 5895-01-342-5159
NSN 6240-01-069-2688
NSN 6220-01-585-6892
NSN 5930-00-277-4704
NSN 5835-00-807-5632
NSN 5920-01-647-4118
NSN 6320-01-384-3850
NSN 2925-00-001-4604
NSN 5965-00-296-9994
NSN 5915-01-324-7603