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 5960-01-518-4440
NSN 5920-01-038-1122
NSN 6135-01-355-8917
NSN 5895-01-273-0883
NSN 5835-01-231-4994
NSN 6130-01-510-2934
NSN 6145-00-862-7069
NSN 4140-00-078-9357
NSN 5855-01-159-1654
NSN 5950-01-467-8556
NSN 5915-00-116-8306
NSN 5960-00-661-0477