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 5925-01-345-1422
NSN 6110-00-280-2753
NSN 5975-01-258-7011
NSN 6320-01-547-2743
NSN 5835-01-014-4574
NSN 5999-01-284-4039
NSN 5945-00-263-3036
NSN 5925-01-642-4283
NSN 6150-01-142-8549
NSN 5975-00-675-4341
NSN 5915-01-481-3999
NSN 7035-01-443-9696