Looking Best PU Diaphragm Manufacturer in Kolkata, India – ISS Rubber & Plastic MFG

When industrial pumps, valves, and control systems demand flexible, long-lasting sealing components, ISS Rubber & Plastic MFG stands out as a leading PU Diaphragm Manufacturer in Kolkata, PU Diaphragm Manufacturer in India. With years of hands-on expertise in precision rubber and plastic component manufacturing, we design and produce high-performance polyurethane (PU) diaphragms engineered for durability, flexibility, and consistent sealing performance across demanding industrial environments.

As a dependable PU Diaphragm Supplier in Kolkata, we combine premium-grade polyurethane materials, precise molding techniques, and thorough quality checks to ensure every diaphragm we manufacture performs reliably — cycle after cycle, even under continuous pressure and flexing loads.

What is a PU Diaphragm?

A PU diaphragm is a flexible, dome-shaped or flat membrane made from polyurethane, used to separate two chambers within a pump, valve, actuator, or pressure-sensing device while allowing controlled movement or transfer of fluid, air, or pressure. Polyurethane is chosen for diaphragm applications because of its excellent flex fatigue resistance, high tensile strength, abrasion resistance, and ability to withstand repeated cyclic loading without cracking or losing shape.

PU diaphragms are widely used in diaphragm pumps, pressure regulators, hydraulic accumulators, pneumatic actuators, and metering equipment — anywhere a durable, leak-proof flexible barrier is required.