ENGPAR Sales Pvt. Ltd. Offers Valve Seat Insert. ENGPAR Sales Pvt. Ltd. Supplies piston rings. Valve Seat Insert is made from chrome alloy steel which has a high wear resistance at high temperature. Valve Seat Insert is suitable for use in light alloy aluminum and cast iron cylinder heads. These inserts serve well to extend the life of valve seat. These are available for automobiles, tractors, industrial and diesel engines.