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 6610-01-519-3080
NSN 6240-00-926-4462
NSN 5990-01-462-1617
NSN 5855-01-145-4903
NSN 5975-01-241-6039
NSN 7035-00-500-7839
NSN 5965-01-165-3002
NSN 6150-01-391-9543
NSN 5930-01-530-7108
NSN 4140-01-591-0616
NSN 5855-01-454-0353
NSN 5990-00-754-2842