Valve seat inserts are a very important component of the valve train in the internal combustion engine, as they are the

interface between the valve and the cylinder head. Valve and valve seat inserts together function to seal off the

combustion chamber by controlling the intake and exhaust gases.

The selection of material in the valve seat is very important. The Seat has to withstand extreme temperatures, stress,

corrosive gases, and compounds. We offer a range of material grades for various engine applications to handle just such

conditions.

 

T-Series material has an extremely high Nickel content. It gives excellent high temp wear and resistance up to 1500F    

Nickel provides reasonable cut and machinability even after Thousands of hours of use. It has the same wear

characteristics as a 52 RC Stellite-type of product but with a hardness of only RC 35 to 37. The high Nickel content of this

seat literally removes the heat away from the valve. The wear rate is almost trivial due to the continuous oxide film which

forms on the T–material seating surface during the combustion process and acts as a shielding device to valve and seat

wear. Therefore the valve seat provides the total performance proficiency that is required for today’s engines to insure

continuing maximum performance. The stainless characteristic of T-material is owed to other high alloys such as

Molybdenum, Vanadium, Silicon, and Chrome. This makes the seat tough and will not fracture, crack, burn, flake or

spall. T–material seats are recommended for use in all engine applications including LPG, Diesel, Natural Gas,

Methanol, and Petrol fuel types with naturally aspirated, turbocharged, or supercharged engines. T-Series will not

fatigue even under the most severe conditions such as high acid gases.

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S-Series has a Tungsten/Chromium base which makes for a carbide tool steel characteristic.  It is very tough throughout

and not affected by extreme combustion heat. Because of the post-heat treating processing, this valve seat material has

superior wear resistance to both pounding and abrasive wear at elevated temperatures. The double heat-treating

the method allows it to achieve a hardness of 43-47RC without having to put in excessive amounts of Nickel alloy, which

would be required to achieve equivalent performance. This valve seat is Proven to work extremely well with Titanium

Valves. They are used in engines running diesel, unleaded gasoline, and propane.

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Our medium-grade valve seat insert is the V-Series product line. The material composition is standard stainless steel

with Chrome being the major component. It is mostly used with unleaded fuel for all automotive applications. The

hardness falls in the 40-44 Rockwell scale due to heat treating. V-series exceeds OEM Naturally aspirated standards