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 6220-01-161-6439
NSN 6220-00-942-2678
NSN 5945-00-642-5755
NSN 5920-00-473-0563
NSN 6240-00-536-1867
NSN 5935-01-159-3954
NSN 6105-01-333-1605
NSN 5915-01-251-4986
NSN 6220-00-211-6146
NSN 5950-01-253-4300
NSN 6135-00-196-5267
NSN 6130-01-218-4250