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 5975-00-533-5053
NSN 5960-01-553-4557
NSN 6610-00-288-5655
NSN 5975-01-050-1253
NSN 5990-01-121-1175
NSN 5930-01-631-1420
NSN 2925-01-218-5556
NSN 6110-01-315-2996
NSN 6620-00-912-9623
NSN 5910-01-153-7308
NSN 6145-00-583-3940
NSN 7035-01-328-3344