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 6145-01-444-4509
NSN 5965-00-471-5018
NSN 5950-01-202-6037
NSN 6240-01-616-1170
NSN 5930-01-276-2975
NSN 5960-00-665-5180
NSN 7035-01-336-0464
NSN 6105-00-318-2807
NSN 5915-01-579-3650
NSN 6110-00-782-0191
NSN 4140-01-210-1929
NSN 5835-01-343-7516