When your diaphragm pump starts losing efficiency, the cause often lies in worn or incompatible diaphragms. Buna (Nitrile) Diaphragms repair and replacement parts provide a durable, oil-resistant solution for pumps that handle fuels, lubricants, and petroleum-based fluids. At Ken’s Distributing, we stock high-quality Buna diaphragms built to restore performance and extend the life of your equipment without costly downtime.
At Ken’s Distributing, we carry a wide range of diaphragm sizes and configurations to fit both standard and specialty pump models.
Available Replacement Sizes:
Each diaphragm is engineered to meet OEM performance standards, ensuring an exact fit for your equipment.
We stock replacement rubber diaphragms compatible with top pump manufacturers, making repairs fast and straightforward. Whether you’re maintaining a single pump or managing a fleet, we provide dependable solutions for multiple models.
These diaphragms are also cross-compatible with a variety of pump types, ensuring maximum uptime and reliable operation across different brands.
Buna-N, also known as Nitrile or NBR, is a synthetic rubber material designed for chemical and petroleum resistance. This compound is the industry standard for diaphragm repair and replacement in systems where oil or fuel exposure is common.
This makes it ideal for petrochemical plants, fuel transfer operations, and lubricant distribution systems where traditional rubber materials fail prematurely.
Buna offers a balance of durability, performance, and affordability. It’s one of the most versatile diaphragm materials used across industries that rely on positive displacement pumps.
Advantages include:
For operations involving grinding, grooving, slurry handling, or fuel transfer, these diaphragms maintain consistent flow and pressure control under demanding conditions.
Buna diaphragms are essential in equipment exposed to oils, fuels, and lubricants. Their superior resistance properties make them the go-to choice for several applications.
Common Uses:
If you operate grinding and grooving companies, or handle slurry or chemical materials, Buna diaphragms provide lasting performance under heavy workloads.
While both materials serve similar functions, Buna and Neoprene have distinct performance characteristics. Choosing the right diaphragm material depends on your system’s fluid type and environmental conditions.
| Feature | Buna | Neoprene |
|---|---|---|
| Oil Resistance | Excellent | Moderate |
| Weather and Ozone Resistance | Limited | Good |
| Fuel Resistance | Excellent | Moderate |
| Temperature Range | -40°F to 250°F | -20°F to 200°F |
| Common Applications | Fuel, oil, hydrocarbon systems | Water, air, and light chemical systems |
If your operation involves petroleum-based fluids, Buna is the preferred choice. For outdoor or weather-exposed systems, Neoprene Diaphragms may offer slightly better environmental resistance.
Regular inspection of your pump’s diaphragms can prevent breakdowns and fluid contamination. Look for the following warning signs that indicate it’s time to replace the diaphragm:
When these issues arise, replacing with Buna Diaphragms repair and replacement parts restores proper performance and prevents further system wear.
For optimal performance and long service life:
Ken’s Distributing also provides guidance and diagrams for proper diaphragm installation to help ensure a smooth, leak-free fit.
For over 60 years, Ken’s Distributing has supplied industrial pump components, repair kits, and diaphragm replacements trusted across the United States. We specialize in providing high-quality, affordable parts that meet or exceed OEM standards.
Our inventory covers diaphragm materials such as Buna, Neoprene, EPDM, and Viton, serving industries that depend on reliability and precision.
You’ll find:
We’re committed to helping customers reduce downtime and extend equipment life with dependable replacement parts.
Upgrade your pump’s performance today with replacement Buna diaphragms engineered for heavy-duty industrial use. Whether you need a 2-inch diaphragm replacement, a 3-inch diaphragm replacement, or specialized components for CH&E, Magnum, or Wacker models, we have the parts you need.
Explore more diaphragm options and pump accessories for complete solutions that keep your systems running smoothly.
