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 5960-00-525-1898
NSN 5835-01-065-5281
NSN 5945-00-729-2622
NSN 5945-00-234-4293
NSN 6610-01-560-9461
NSN 5925-01-147-8848
NSN 5895-01-462-6022
NSN 5985-00-125-4630
NSN 5965-01-443-5490
NSN 5996-00-195-1675
NSN 5965-01-173-9106
NSN 5855-01-642-9603