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 5975-01-422-8138
NSN 6610-01-100-3662
NSN 5990-01-352-5255
NSN 5855-00-484-8638
NSN 5945-00-394-1879
NSN 5998-00-520-2753
NSN 5930-01-235-6679
NSN 5950-01-425-2163
NSN 5935-00-529-0921
NSN 6620-01-313-3755
NSN 6650-00-684-3060
NSN 5960-01-256-6956