Custom Diaphragm Seals for Pumps & Valves

Pump and valve diaphragms are flexible, rubber parts that provide a crucial function in fluid control systems. They act as a barrier between two chambers, moving up and down to control the flow of fluid or gas. This movement is what allows pumps and valves to regulate pressure, flow rate, and direction. At Exactseal, we specialize in manufacturing high quality diaphragms for pumps and valves. Our range includes diaphragms for Wilden diaphragm pumps, diaphragm vacuum pumps, air diaphragm pumps, ARO pumps, and diaphragms for valves & AODD Pumps. Each diaphragm is crafted using advanced techniques and durable materials to ensure reliability and superior performance.

Diaphragm Seals Built Around Your Pump & Valve Application

A diaphragm’s job changes with where it sits in the system. A membrane flexing millions of cycles inside an air-operated pump faces different demands than a seal holding position against line pressure in a control valve. Because Exactseal is a custom molder and fabricator, every diaphragm is built to your specification for its specific pump or valve duty rather than pulled from a generic catalog. The application lanes below are the ones we routinely support.

Diaphragm Pump Seals

• Air-operated double-diaphragm (AODD) pumps – replacement and OEM diaphragms for AODD platforms, including Wilden- and ARO-style pumps.
• Air and pneumatic diaphragm pumps – flexing membranes matched to your stroke length and connection geometry.
• Diaphragm vacuum pumps – parts profiled for the pressure differential and cycle life your unit sees.

Valve & Flow-Control Seals

• Control valves – diaphragms that translate actuator force into flow adjustment.
• Weir and pinch valves – molded shapes fitted to the valve body and seat.
• Diaphragm valve gaskets – sealing elements custom-cut or molded to your valve interface.

Actuators, Regulators & Compressors

• Pneumatic actuators – diaphragms that convert air pressure into linear motion for valve and equipment operation.
• Pressure and gas regulators – sensing diaphragms fabricated to your setpoint geometry.
• Compressors and vacuum equipment – membranes matched to the pressure range and media your machine handles.

Materials Matched to the Media

We select the elastomer to suit the fluid or gas your pump or valve moves. Common options include EPDM, silicone, nitrile (Buna-N), FKM (Viton) and neoprene, with fabric-reinforcement options such as nylon, Nomex, Dacron and Kevlar for higher-pressure or longer-cycle duty. For aggressive chemical service, a PTFE-faced diaphragm may be the better fit; for long-stroke actuators and cylinders, a rolling diaphragm can carry the travel with low friction.

Industries We Serve

• Chemical processing
• Water and wastewater treatment
• Food and beverage
• Pharmaceutical manufacturing
• Oil and gas
• HVAC systems

Request a Quote

Send us your pump or valve diaphragm drawing, a sample, or the operating conditions (media, pressure, temperature and cycle expectations), and we’ll build the part to match. To compare material and construction options across the full range, start at our rubber diaphragm seals hub.

Our pump and valve diaphragms find applications in various industries, including chemical processing and wastewater treatment. Diaphragms for Wilden pumps and air diaphragm pumps are essential for fluid handling and transfer. Diaphragm vacuum pumps are used in vacuum systems for various industrial processes. ARO pumps and diaphragms for valves ensure efficient fluid control and sealing. The versatility of our diaphragms makes them appropriate for a wide range of pumping and valve applications.

At Exactseal, we prioritize durability and efficiency in our products. We design our products, including Wilden diaphragm pump diaphragms and ARO pump diaphragms, to withstand rigorous conditions. We use high-grade rubber materials that can withstand different operating conditions, including high temperatures, pressures, and corrosive substances. This ensures that our diaphragms deliver reliable performance and longevity. Whether you need a diaphragm for aggressive chemicals or a valve diaphragm for precise control, our products deliver consistent reliability and efficiency.

We understand that each application has unique requirements. That’s why we offer customized solutions for pump and valve diaphragms. Whether you need diaphragms for a high-pressure pump, a chemical-resistant valve, or any other application, we can design and manufacture the perfect part for you. Our experienced team collaborates closely with clients to design and manufacture diaphragms that meet specific needs. Moreover, if you require a particular size, material, or setup, we can also craft perfect diaphragm for your application. Our custom solutions ensure optimal performance and satisfaction for your specific requirements.

Quality is crucial at Exactseal. We adhere to strict quality control processes to ensure that every pump and valve diaphragm meets our high standards. Our commitment to using the best materials and manufacturing techniques guarantees superior performance and reliability. Choose Exactseal for your pump and valve diaphragm needs and experience exceptional quality and customer satisfaction. Trust us for all your Wilden diaphragm pump, diaphragm vacuum pump, air diaphragm pump, ARO pump diaphragm, and diaphragm for valve requirements, and discover why we are a trusted partner in sealing solutions.

Our valve diaphragm seals isolate media and regulate flow in pinch, weir, and control valves, molded in EPDM, Viton/FKM, or nitrile to match your pressure, temperature, and chemical exposure. Choose flat or convoluted profiles, with or without a bonded metal stud or backing plate — every part produced to your spec. Request a quote today.