Wilden Products

Durability, Reliability and Cost Savings

Not only are Wilden pumps the most cost-effective, reliable and energy-efficient solutions available, but our state-of-the-art air distribution systems (ADS) significantly increase positive displacement pump productivity by reducing air consumption and maintenance for the most energy-efficient AODD pump operation possible.

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Chem-Fuse Savings Calculator

Personalized savings calculations for your operation

Instantly see your potential savings based on the pre-filled standard mean time between failure data for Chem-Fuse and Conventional Diaphragms.

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Specialty Series

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Wilden Markets

Wilden® solves pumping challenges across the spectrum

Wilden® positive displacement air-operated double-diaphragm (AODD) pump solutions are leading the way in a host of industries and applications.

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Wilden Support

The Wilden World of Service and Support - Assistance Beyond Expectations

Wilden® is always ready to assist with technical support for Wilden AODD pumps, parts or accessories.

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Chem-Fuse Savings Calculator

Personalized savings calculations for your operation

Instantly see your potential savings based on the pre-filled standard mean time between failure data for Chem-Fuse and Conventional Diaphragms.

Start Saving Now

Industry's Longest-Lasting AODD Pump Diaphragms

Chem-Fuse™ Integral Piston Diaphragms (IPDs)

As the inventor of the groundbreaking air-operated double-diaphragm (AODD) pump, Wilden® knows the ins and outs of keeping your pump running at peak efficiency with the lowest mean time between failure (MTBF) – and it starts with examining the reliability of your diaphragm.

Unlike conventional diaphragms that fall short in meeting the demands of critical pumping applications, the innovative Chem-Fuse™ Integral Piston Diaphragm (IPD) features a simple one-piece design that offers greater durability, increased flex life and easier cleanability.

With Wilden Chem-Fuse diaphragms inside your AODD pump, you can benefit from less downtime, more uptime and the peace of mind of long-lasting performance.

Ready to pump with confidence using Chem-Fuse diaphragms?

Chem-Fuse IPD vs. Traditional Diaphragms

Key Advantages to Optimize Your AODD Pump

  • Offers 2x to 15x longer life by eliminating outer-piston abrasion.
  • Improves containment and safety when pumping valuable, critical and dangerous fluids by eliminating potential leak point.
  • Offers faster changeovers between products thanks to easy cleanability.
  • Guarantees reliability due to its exclusive availability as an authentic Wilden part.

See How the Amazing Simplicity of Chem-Fuse One-Piece Diaphragms

The Future of AODD Pumps

Durable Diaphragm Design

What once began as a simple design has become the longest-lasting diaphragm in the industry — the Chem-Fuse IPD.

With Chem-Fuse diaphragms, your AODD pump can satisfy traditional operational demands, such as flow rate and suction lift requirements, while also eliminating costly abrasion-related damage that can potentially jeopardize your entire operation.

Check out our white paper to learn how Chem-Fuse diaphragms can help solve your pumping challenges of today and tomorrow.

Long-Lasting Solution. Real-World Examples.

Durability For Abrasive Paint Production

When a paint manufacturer’s diaphragms were wearing out every three to six months because of the abrasiveness of titanium dioxide (TiO2 ) paint slurry, they switched to Chem-Fuse diaphragms. For over three years, they experienced trouble-free operation and an increased life span of 6 to 12 times the original diaphragms.

Zero Cross-Contamination for Animal Feed

A nutritional ingredients manufacturer suffering from premature diaphragm failure due to abrasive liquids turned to the Wilden innovative one-piece design. Once they equipped their pumps with Chem-Fuse diaphragms, they experienced increased diaphragm life while eliminating the risk of product-to-product cross-contamination.

Ideal Flow & Suction for Glass Polishing

To polish large telescopic lenses for aerospace applications, a glass manufacturer trusted Chem-Fuse diaphragms for their 2" ductile-iron AODD pumps. After making the switch, the manufacturer took advantage of the necessary flow rates and suction lift required for the pumping process while protecting against harmful and costly leaks.

How Much Are Your Diaphragms Costing You?

Use our Chem-Fuse Savings Calculator to quickly find out how much you're spending with traditional diaphragms and how much time and money Chem-Fuse Diaphragms can save you. No mental math required.

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Have Questions? Work with a Wilden Product Specialist!

With Chem-Fuse diaphragms, you can keep your pump in production longer. Streamline spare parts inventory, minimize hazardous leaks, and benefit from effortless cleanability for faster product changeovers.

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Chem-Fuse Material Options


Chemical resistant. Excellent flex life, abrasion, resistance, and durability.


Outstanding sealing of low specific gravity & highly lubricious materials. Excellent abrasion resistance and durability.

Bunalast™ (NEW)

Replacement for Geolast® and Buna-N. Excellent abrasion resistance & wide temperature range.

Make the Right CHOICE

Need a fast and simple way to test various pump configurations? With our PSG CHOICE Online Pump Selection Tool, you can ensure chemical compatibility and confirm pump capacity to make sure you’re selecting the best Wilden pump for your application.

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