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 6645-01-623-4199
NSN 4140-01-553-5767
NSN 5999-01-605-0481
NSN 6610-00-476-4402
NSN 5999-00-622-6764
NSN 5935-01-313-1428
NSN 6150-00-153-9361
NSN 5998-01-473-2080
NSN 5950-00-457-2537
NSN 4140-00-203-3870
NSN 5998-01-243-4340
NSN 6240-00-112-9008