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 6610-01-391-6781
NSN 5835-00-166-9413
NSN 5855-01-125-9167
NSN 5930-00-539-7149
NSN 6220-00-233-7436
NSN 6620-01-359-3920
NSN 5835-01-235-7821
NSN 6110-01-481-9235
NSN 2925-01-622-7852
NSN 5990-01-390-2177
NSN 5998-00-633-5169
NSN 5998-00-843-1125