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 5975-01-021-8678
NSN 6645-01-063-8243
NSN 5915-00-146-8566
NSN 5895-01-278-7817
NSN 5935-00-085-4730
NSN 5905-01-430-3500
NSN 5905-00-156-2982
NSN 5990-01-120-1910
NSN 7035-01-443-3052
NSN 5935-01-589-0873
NSN 5975-01-148-9019
NSN 6130-00-647-8471