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 6145-00-249-6641
NSN 5965-00-068-4812
NSN 5985-01-310-1379
NSN 4140-00-332-5956
NSN 5930-00-224-4034
NSN 4140-00-122-6422
NSN 5895-01-160-6599
NSN 7035-01-514-4617
NSN 6220-01-381-1793
NSN 6610-01-420-7817
NSN 6145-01-236-7621
NSN 5996-01-350-3345