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 5960-01-609-6565
NSN 5895-01-046-8745
NSN 5895-01-119-3942
NSN 6105-01-627-6255
NSN 5965-01-209-2838
NSN 5960-01-274-7628
NSN 5930-00-471-7045
NSN 6685-00-919-5654
NSN 6220-01-646-6342
NSN 6135-01-461-2915
NSN 6150-01-194-4442
NSN 6645-01-470-4688