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 5998-01-640-7320
NSN 6610-00-161-7439
NSN 5945-00-921-5129
NSN 6105-00-837-9421
NSN 6320-01-180-9908
NSN 5950-01-131-6875
NSN 6105-01-501-8709
NSN 6130-00-752-2584
NSN 5945-00-287-8022
NSN 4140-01-202-8670
NSN 6610-01-224-7247
NSN 6645-01-483-5519