3″ AMT Replacement Diaphragm – TPE (Model 335)
The 3 Inch AMT Replacement Diaphragm – TPE (Model 335) is built for demanding work. When your AMT Model 335 pump runs in high-heat or chemically active environments, standard rubber and neoprene start to lose the battle. This replacement diaphragm uses TPE to handle those conditions and keep your pump sealed and running longer between service intervals. It fits the AMT 3″ Model 335 pump directly with no modifications and gives industrial contractors the upgraded durability they need.
Key Features
- Fits AMT 3″ Model 335 diaphragm pumps with a direct drop-in install.
- Made from TPE for superior resistance to heat, chemicals, and flex fatigue.
- Outlasts rubber and neoprene in sustained high-demand pumping conditions.
- Built for industrial fluid transfer, chemical pumping, and high-temperature use.
- Helps reduce unplanned downtime in environments where pump failure is costly.
- In stock and ships fast from Ken’s Distributing.
Specifications and Compatibility
- Size: 3 Inch
- Material: TPE (Thermoplastic Elastomer)
- Pump Compatibility: AMT 3″ Model 335 diaphragm pumps
- Part Number: 3350-300-00
- Part Type: Replacement Diaphragm
- Use: Chemical pumping, high-temperature applications, industrial dewatering
Why the 3 Inch AMT Replacement Diaphragm – TPE (Model 335) Is the Smart Upgrade for Hard Jobs
The AMT Model 335 is a high-volume pump, and when you are pushing 3″ of flow through an industrial or chemical-heavy application, the diaphragm takes a beating. TPE is the material designed for exactly that scenario. It maintains elasticity under temperature swings and does not absorb the chemicals that break down rubber and neoprene from the inside.
Contractors and plant maintenance teams who switch from rubber to TPE on their AMT 3″ pumps often notice the difference in how long the part holds up. Fewer swaps per season means less unplanned downtime and a lower total cost of ownership over time. When the job demands a lot from the pump, this 3″ TPE diaphragm delivers.
Cross-Compatibility
The 3 Inch AMT Replacement Diaphragm – TPE (Model 335) is designed for AMT 3″ Model 335 diaphragm pumps. For the 2″ AMT Model 336 TPE version, or for no-holes TPE options, those are listed separately on our site. Rubber and neoprene versions of the Model 335 diaphragm are also available, along with TPE and other materials for CH&E, Magnum, Mud Hog, Wacker, Gorman-Rupp, Multiquip, and Riverside pumps.
Frequently Asked Questions
Q. What AMT Pump Does This TPE Diaphragm Fit?
The 3 Inch AMT Replacement Diaphragm – TPE (Model 335) fits AMT 3″ Model 335 diaphragm pumps. Confirm the model number and size before you order, especially on industrial applications where a wrong-size part creates real problems fast. Call us if you need to verify before placing the order.
Q. How Does TPE Compare to Neoprene and Rubber on a 3″ AMT Pump?
Rubber handles clean water well and costs the least. Neoprene is the step up for muddy or mildly chemical conditions that most construction jobs involve. TPE is the top tier for sustained heat, strong chemical exposure, and high-cycle industrial pumping where standard materials break down too quickly. If you are pumping something aggressive, TPE is worth the upgrade.
Q. How Long Does a TPE Diaphragm Last in Industrial Use?
TPE typically outlasts rubber by a wide margin in demanding conditions and holds up better than neoprene when chemicals or heat are involved. Exact life depends on what you are pumping and how many hours the pump runs, but many industrial users find TPE lasts two or more times longer than rubber in the same environment. It is an investment that pays off in reduced downtime and fewer replacement cycles.
Q. Can I Order This Part by Part Number?
Yes. The 3 Inch AMT Replacement Diaphragm – TPE (Model 335) corresponds to AMT part number 3350-300-00. You can use that number to cross-reference and confirm the correct fit for your pump. If you want extra help verifying before you order, call us and we will confirm it against your pump model.