It is made of high quality 304 stainless steel. Fluororubber and corrugated tube shaft seal. Ideal general-purpose components for vacuum applications requiring cleanliness and corrosion resistance.Edge-welded bellows and valve move out of the gas thereby achieving high conductance features. Easy to maintenance, normal repairs can be made without removing the valve body from the system. Good sealing performance, stable and no leakage. Application: semiconductor, solar energy, metallurgy, aviation, light industry, etc.
Material: 304 stainless steel + fluororubber + corrugated tube shaft seal. Size:13.97 x 6.86cm/5.5 x 2.7in. That the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.