DNJ® With over 30 years of experience, is a full-line provider of quality engine parts for all makes and models. With an extensive coverage of engine parts for all engines, DNJ® is the brand trusted by engine rebuilders all over the world. DNJ® Gaskets are engineered precisely to meet or exceed OEM specifications for a perfect fit every time. DNJ® Gaskets are made from Non-Asbestos material, including Graphite, MLS (Multi-Layer Steel), Cork, Rubber, or Silicone Rubber.