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 5930-01-024-8763
NSN 5975-00-924-9927
NSN 6150-00-225-9837
NSN 5945-00-255-4033
NSN 6645-00-242-0480
NSN 2925-00-468-5273
NSN 5905-01-317-9361
NSN 6620-00-620-7360
NSN 5975-01-143-4802
NSN 6610-01-165-7024
NSN 6240-01-273-0193
NSN 5930-00-596-4523