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 5920-01-622-3151
NSN 5935-00-227-1110
NSN 5915-01-444-2860
NSN 5998-01-050-1446
NSN 5950-01-399-8677
NSN 6130-01-087-4751
NSN 5925-00-953-5801
NSN 5990-01-118-8624
NSN 6240-00-152-6289
NSN 5920-00-256-1087
NSN 5998-00-972-7134
NSN 5996-00-779-8349