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 5930-01-158-5694
NSN 5835-00-594-4921
NSN 6685-01-024-9922
NSN 6110-00-101-9821
NSN 5950-00-546-1965
NSN 5835-00-905-7165
NSN 5950-01-334-7881
NSN 5965-00-928-6983
NSN 6320-00-242-3300
NSN 5915-00-262-5788
NSN 5975-00-266-2029
NSN 6240-00-589-4515