relationship parher british interlock hose fittings structure and performance.

Hydraulic hose from the tube, enhancement layer and outer layer (Figure 7), the inner layer in direct contact with the fluid, it requires long-term work in the state should not be corrosive jic flare fittings fluid can leak. In the enhancement layer under the action can withstand a certain pressure. Therefore, should adopt nitrile rubber, in addition to plastic material, the hardness, thickness and permanent deformation of the main factors that affect performance as well as the inner layer. Hardness and permanent deformation of great influence on the sealing performance. General high hardness, flat seal metric hydraulic fittings low permanent deformation parher british interlock hose fittings compressed, the sealing performance is better. Generally in the 70 to 85 Shore A hardness, compression set is preferably 50%. The layer thickness is preferably 1.5 ~ 2.5mm, thick will increase its liquidity in the withholding, causing excess glue in contact with the end face of the core sleeve and hose fittings accumulation, reducing the flow cross-section; too thin will when withholding is fracturing. While the inner layer of uniform thickness is also very important. If the thickness is uneven compression can cause side after breaking the one hand, the heap of plastic. The surface of the inner layer is also an important factor in the performance of Ma Hang Quality.