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 5945-01-425-2299
NSN 5999-01-512-8678
NSN 5835-00-315-3797
NSN 5990-01-370-7912
NSN 5945-01-343-6899
NSN 5835-00-139-6407
NSN 5915-01-343-2852
NSN 5855-01-453-1549
NSN 5950-01-348-3173
NSN 5905-01-551-0530
NSN 5930-01-441-6684
NSN 5960-01-385-0191