The precise O RING surface is smooth, none the needle eye, none the fragments, the
precision achieves +/-0.03 mm to +/-0.08 mm. Provides the automobile ,the aviation, the
medical service, the valve, the bathroom, the electronic contour accuracy profession, the
existing specification has the several thousand kinds.
Silicone sealing ring uses in astronautics, the automobile, the medical service, the drugs
manufacture, the satellite, the valve, pump, the bathroom , the electron, the electric
appliance, and so on industry
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