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 5960-01-632-6576
NSN 6240-01-015-8880
NSN 6620-01-157-9267
NSN 6620-00-236-0449
NSN 6135-01-420-5907
NSN 5855-01-541-1361
NSN 5985-01-398-9580
NSN 4140-01-464-0584
NSN 5835-01-228-4474
NSN 4140-00-078-9357
NSN 5895-01-301-0308
NSN 5935-00-837-0779