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 5855-00-149-0766
NSN 5998-00-179-9932
NSN 5975-00-541-8531
NSN 7035-00-557-5570
NSN 5950-00-999-8271
NSN 5999-01-514-7832
NSN 5935-00-138-5697
NSN 5990-00-761-9160
NSN 5835-00-136-2322
NSN 5965-01-285-6728
NSN 5985-01-176-6721
NSN 5910-01-418-6859