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 6135-00-764-8680
NSN 5960-01-466-4153
NSN 5925-01-368-3723
NSN 6320-01-462-2295
NSN 5930-01-055-6963
NSN 6650-01-108-6629
NSN 5990-01-186-8310
NSN 6650-00-147-8765
NSN 6685-01-634-0611
NSN 5915-01-279-0830
NSN 5999-01-578-2375
NSN 6240-00-614-9679