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 5835-01-408-0621
NSN 5975-00-276-7559
NSN 5905-01-490-4290
NSN 5925-00-227-8557
NSN 5998-01-097-9836
NSN 5920-01-430-2530
NSN 5895-00-035-8813
NSN 6240-00-523-9861
NSN 5975-01-437-8869
NSN 5910-01-545-6648
NSN 5930-00-147-7882
NSN 5835-00-244-4956