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 6620-01-253-0374
NSN 5975-00-906-3674
NSN 6645-01-633-1852
NSN 5855-01-147-4785
NSN 5990-01-061-5618
NSN 6110-00-834-7801
NSN 6320-00-731-6134
NSN 6320-01-145-6786
NSN 6130-01-040-9812
NSN 6135-01-199-1185
NSN 5910-00-769-5448
NSN 6105-01-394-5721