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 6620-01-355-8502
NSN 5975-00-435-7744
NSN 5915-00-134-0291
NSN 5996-01-612-6020
NSN 6145-01-541-0454
NSN 6650-00-885-3775
NSN 5945-00-679-5091
NSN 5930-00-845-3978
NSN 5985-01-463-3283
NSN 7035-01-256-3973
NSN 4140-01-254-3689
NSN 5855-00-327-2112