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 5920-01-123-8148
NSN 5905-01-213-8309
NSN 5930-00-343-0603
NSN 6150-00-710-7191
NSN 5945-01-591-7036
NSN 5965-00-285-0745
NSN 5855-00-821-7512
NSN 6610-01-224-7247
NSN 5996-00-153-9055
NSN 5935-01-093-2576
NSN 6620-01-513-8525
NSN 5975-01-080-7455