Mechanical seal raw material inspection		Testing room for raw materials and mechanical seals		Mechanical seal face/ring material grain analysis
Mechanical seal face/ring density		Mechanical seal ring/face roughness& finish		Projector for shaft and sleeve chamfering and angles
Mechanical seal face/ring concentricity		Mechanical seal face/ring hot shock		Microscope check for mechanical seal faces
Mechanical seal working test		Friction values of seal faces and mating rings

      Ningbo Donglian Mechanical seal Co.,Ltd. has owned enough good inspection tools or devices to ensure  quality of mechanical seals and seal faces/rings,shafts and sleeves/bushings/tubes/bushes in silicon carbide,tungsten carbide,aluminium oxide ceramic,and carbon.We have inpsection devices for raw material compounds, grain analysis, density of seal faces/rings, roughness and finish of seal faces/rings, projectors of angles and chamfering, concentricity of seal faces and seal face hot shock test, microscopes, mechanical seal working tests,and friction values of mechanical seal faces/rings,etc.