Material
● Body - Aluminum, mill finished．
● Reflector-Aluminum with the body one part．

Window Glass
● Tempered glass(could be add white or red oil level mark)．

Glass seal ring
● Type -A: Rubber NBR.
● Type -B: Rubber FKM．

Maximum continuous working temperature
● Type-A.-40°Ｃ~100°Ｃ.
● Type-B.-20°Ｃ~180°Ｃ.

Working pressure
● The working pressure should be lower than 0.8 Mpa.
● The Instantaneous pressure should be lower than 1.5 Mpa.