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 6610-01-329-5503
NSN 5975-01-369-1835
NSN 5950-00-816-0263
NSN 5975-01-299-1597
NSN 6110-01-505-2074
NSN 6145-01-554-6801
NSN 6105-00-171-2134
NSN 5915-00-318-8872
NSN 5985-01-127-3039
NSN 5855-01-431-5581
NSN 5996-01-322-4838
NSN 5895-01-204-8819