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 6685-00-452-6257
NSN 6150-01-257-3825
NSN 5945-01-422-1684
NSN 5999-01-258-6941
NSN 5990-01-242-4493
NSN 6620-01-630-1721
NSN 5998-00-565-9522
NSN 5920-00-491-5192
NSN 5915-00-866-7532
NSN 5990-01-242-9653
NSN 5950-01-083-4183
NSN 5930-01-014-7143