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 5905-00-392-5508
NSN 6240-01-603-0143
NSN 6320-01-150-5378
NSN 5895-01-425-8401
NSN 5930-01-452-3087
NSN 6105-01-323-7401
NSN 5950-01-317-2214
NSN 5835-01-462-5983
NSN 5975-01-093-9541
NSN 6145-01-585-5713
NSN 2925-00-698-4882
NSN 5960-01-273-7044