This is a sealing diaphragm for pumps and valves. It is made of silicone. It is processed via secondary vulcanization. It presents a pure black appearance.It features an integrated structure of "disc + central boss + positioning clips". The boss is designed with an inner hole. Three small positioning protrusions are arranged on the edge of the disc. Its hardness is 50±5°. This relatively soft silicone component boasts excellent elasticity. It perfectly fits the sealing mounting positions of Sealed Fluid Direction Control Valve components.As a core sealing element for fluid control systems, it complies with the stringent standards of Diaphragms & Sealing Gaskets and Pressure Seal Components. It is fully compatible with the application requirements of Sealed Diaphragm Pump and Sealed Fluid Transfer Pump.
Product Features
1. Functions
1)Valve Port Sealing & Leak PreventionIt serves as a core sealing component for valves. It tightly fits the mating surfaces of valve ports and valve cores. It precisely blocks the leakage of media (such as liquids and gases). It maintains pressure stability of the valve system. It prevents external impurities from entering the valve interior and causing jamming. This sealing performance meets the rigorous demands of Mini Sealed Valve and Sealed Fluid Direction Control Valve for fluid control equipment.
2)Adaptation to Valve Assembly & PositioningThe structural design with positioning clips can be precisely embedded into the mounting positions of valve cavities. It prevents the sealing diaphragm from shifting during valve opening and closing. It ensures continuous and reliable sealing. This design is also compatible with the assembly needs of Micro Sealed Hydraulic Pump auxiliary valve parts.
3)Buffering Impacts During Valve OperationIt leverages the elasticity of silicone. It cushions the impact between the valve core and valve seat when the valve is opened and closed. It reduces component wear. It extends the service life of the valve. This buffering effect is critical for maintaining the durability of Sealing Elements for Valves in high-frequency operation scenarios.
2. Performance Characteristics
1)Silicone + Secondary Vulcanization Process for Enhanced Medium Resistance and StabilityIt is made of silicone substrate. It is treated with secondary vulcanization. The component’s material compactness and environmental resistance are significantly improved. Combined with a hardness of 50±5°, it retains the high elasticity of silicone to fit sealing surfaces tightly. It offers better deformation resistance at the same time. It avoids creep failure after long-term use. This performance advantage aligns with the standards of Fluid-Tight Diaphragms and high-reliability fluid sealing components.
2)Acetic Acid Resistance for Acidic Medium ScenariosIt exhibits excellent resistance to acetic acid corrosion. It is capable of long-term contact with acetic acid-based media without swelling or degradation. It is compatible with common fluids such as water and weak acids/bases at the same time. It delivers strong sealing reliability for Sealed Diaphragm Pump media transfer processes.
3)Food-Grade Certification for Contact ScenariosIt is compliant with China’s GB4806 (food contact standard) and EU 1935/2004 certification. The material is safe and non-toxic. It is suitable for valve sealing scenarios involving food and drinking water contact. This safety feature expands its application scope in Micro Sealed Hydraulic Pump food processing auxiliary systems.
4)Structural Design for Valve Assembly CompatibilityThe integrated "disc + boss + positioning clips" structure not only meets the sealing requirements of valve ports. It enables precise positioning and installation at the same time. It avoids sealing failure caused by assembly deviations. This structural design complies with the quality standards of Sealing Elements for Valves and Gasket & Membrane Assemblies for integrated fluid systems.
3. Application Scenarios
1)Fluid Control ValvesIt is suitable for sealing acetic acid transfer valves and acidic fluid control valves in industries such as food and beverage, pharmaceuticals, and chemicals. Examples include acid-base mixing valves in beverage production lines and medicinal liquid control valves in pharmaceutical equipment. These scenarios often rely on the stable performance of Diaphragms & Sealing Gaskets to ensure product safety.
2)Domestic Water EquipmentIt is used for sealing inlet and outlet valves of water purifiers and water dispensers. It complies with food-grade standards to ensure water safety. Its compatibility with potable water systems also makes it a preferred choice for Fluid-Tight Diaphragms in household fluid control devices.
3)Industrial Fluid SystemsIt is applicable for valve sealing in weak acid medium circulation systems, such as acidic waste liquid treatment valves in electroplating and electronics industries. In these industrial settings, it works alongside Pressure Seal Components to maintain system pressure stability and prevent media leakage.
4. Pain Point Solutions
1)Solving Sealing Failure in Acidic MediaOrdinary rubber seals are prone to swelling and corrosion when in contact with acetic acid. This leads to leakage. The acetic acid resistance of this diaphragm enables long-term stable sealing of acidic media. It reduces maintenance frequency for Sealed Fluid Transfer Pump valve units.
2)Eliminating Safety Risks in Food Contact ScenariosOrdinary seals may contain toxic substances. They cannot be used in food/drinking water scenarios. This diaphragm’s food-grade certification eliminates safety risks in contact applications, which is essential for Gasket & Membrane Assemblies used in food processing fluid systems.
3)Resolving Positioning Deviation in Valve AssemblyTraditional flat seals tend to shift during valve operation. This results in poor sealing. The structure with positioning clips of this product can be precisely fixed on the valve seat. It avoids displacement and failure, a common issue that plagues the performance of Sealing Elements for Valves in dynamic working conditions.
4)Addressing Creep Aging of Silicone SealsOrdinary silicone is prone to creep under long-term pressure. It loses sealing elasticity. The secondary vulcanization process improves material stability. It extends the service life of the seal, reducing the replacement cost of Diaphragms & Sealing Gaskets in continuous operation systems.
