Curtiss-Wright EST Group specializes in the design and manufacture of highly-engineered tube plugging products and repair services for shell and tube heat exchangers, condensers, coolers and chillers. Our flagship product, Pop-A-Plug® Heat Exchanger Tube Plugs, are the industry’s leading technology for plugging leaking and degraded heat exchanger tubes. EST Group also engineers and manufactures GripTight® test and isolation plugs to greatly simplify and expedite pressure testing and/or isolation of piping, tubing, valves, pressure vessels and a multitude of special applications.

Samrt Ram ACHE Adapter banner


Pop-A-Plug® Tube Plugs are the industry’s leading technology for mechanical tube plugging of leaking and/or degraded heat exchanger tubes. EST Group offers a complete line of tube plugs and plugging systems.

Find out more »
Hydrostatic Test & Isolation Plugs

GripTight® Hydrostatic Test & Isolation Plugs for pressure testing of pipe, pipelines and pressure vessels. Test plugs provide safe and effective testing at working pressures up to 15,000 PsiG (1,034 BarG).

Find out more »
Filed Services

Our Field Services team provides a complete range of on-site services for tubular heat exchangers, condensers and oil coolers. Our experienced technicians can handle even the most demanding jobs, safely, competently and on-time.

Find out more »
Global Presence

EST Group is located in Hatfield, PA USA, with offices in The Netherlands and Singapore, and a global network of representatives & distributors.

Find out more »