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 6105-01-607-0381
NSN 5925-00-165-0371
NSN 2925-01-310-3232
NSN 6135-01-244-5580
NSN 2925-00-862-8550
NSN 6620-01-453-3135
NSN 6110-01-020-8153
NSN 5905-01-634-0595
NSN 5998-01-063-1696
NSN 6135-01-650-9371
NSN 5998-01-494-0167
NSN 6220-01-340-2791