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 5999-00-153-0917
NSN 5925-01-044-5508
NSN 5965-01-265-6814
NSN 6150-00-078-7064
NSN 5950-01-428-7776
NSN 5950-00-156-7287
NSN 6150-01-127-5645
NSN 6145-01-186-5579
NSN 5985-01-570-7018
NSN 2925-01-327-3069
NSN 5915-01-029-2665
NSN 5920-01-546-5402