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 5895-01-629-4961
NSN 5930-01-592-5096
NSN 5935-01-659-0896
NSN 6645-01-554-2871
NSN 6135-01-445-6589
NSN 5998-00-062-5504
NSN 5920-00-510-5428
NSN 6105-01-160-8599
NSN 5975-01-301-4628
NSN 6645-00-583-0066
NSN 5965-01-130-0762
NSN 5835-01-135-2601