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 5905-01-643-3986
NSN 6240-01-406-5345
NSN 5999-01-147-5317
NSN 5960-01-284-4118
NSN 5915-01-036-3614
NSN 6645-00-351-8580
NSN 5855-01-420-4988
NSN 2925-01-547-4565
NSN 5935-01-593-0029
NSN 4140-01-413-8961
NSN 5998-00-210-0309
NSN 5950-00-318-9229