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 6110-01-451-8113
NSN 5915-00-955-5939
NSN 4140-01-342-8677
NSN 5998-01-152-1935
NSN 5950-01-604-9435
NSN 6150-00-470-4759
NSN 6150-01-276-3413
NSN 6320-00-149-7570
NSN 5950-01-563-7259
NSN 6645-01-294-6403
NSN 5925-01-126-8188
NSN 5975-01-150-6910