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 5895-00-173-7881
NSN 7035-01-490-0388
NSN 6145-00-594-7822
NSN 5999-01-462-2123
NSN 6220-00-583-3442
NSN 5945-00-273-9153
NSN 5835-01-442-6482
NSN 5950-00-795-6953
NSN 5960-01-267-6139
NSN 5950-01-608-7611
NSN 5990-01-035-6869
NSN 5998-01-075-5361