Hydraulic Pinch-Off Tools
Powered Tools for Sealing Copper, Aluminum, or Nickel Tubing
Hydraulic pinch-off tools provide the controlled force needed to permanently seal ductile metal tubing through a cold-weld process. They are used when tubing size, access, production needs, or sealing requirements call for more force than a manual tool can provide.
CH Bull offers hydraulic pinch-off tools in scissor-style and C-frame configurations, with air-powered and electrically powered pump options. Our team can help you select the right tool and pump setup for your application.
Compare Hydraulic Pinch-Off Tool Options
CH Bull offers hydraulic pinch-off tools for a range of tubulation sizes, tool styles, and access needs. The right model depends on tubing size, working space, tool approach, and the pump setup needed for the application.
GST Scissor-Style Hydraulic Tool

Best For: Hydraulic pinch-off applications that need scissor-style access, smaller to mid-size tubing capacity, or angled jaw options.
Highlights:
- Hydraulic scissor-style design
- Available for 1/8″, 1/4″, 3/8″, 1/2″, or 3/4″ tubulation, depending on model
- Jaws available in 0°, 30°, or 45° approach angles
- Can be paired with foot-operated air or electric pump options
- Good option when approach angle matters
HAC C-Frame Hydraulic Tool

Best For: Smaller to mid-size hydraulic pinch-off applications where a C-frame tool shape provides better positioning.
Highlights:
- Hydraulic C-frame configuration
- Standard capacity: 1/4″ to 1/2″ tubulation, depending on model
- Designed for copper, aluminum, or nickel tubing
- Compact frame style for controlled positioning
- Pump setup can be confirmed by CH Bull
JSP C-Frame Hydraulic Tool

Best For: Larger tubulation or heavier-duty hydraulic pinch-off applications.
Highlights:
- Hydraulic C-frame configuration
- Standard capacity: 1/2″ to 1″ tubulation, depending on model
- Designed for larger pinch-off applications
- Good fit for heavier-duty hydraulic sealing needs
- Can be configured with air or electric pump options
Hydraulic pinch-off tools can be supplied as complete systems with compatible foot-operated air-powered or electrically powered pump options.
Not sure which hydraulic pinch-off tool fits your application?
Tell us what you’re working with, and a CH Bull specialist can help determine the right tool and pump setup.
How to Choose a Hydraulic Pinch-Off Tool
The right hydraulic pinch-off tool depends on more than tubing diameter. Tool style, approach angle, pump type, and seal preparation all affect the final result.
Tubing Size
Start with the tubing diameter. GST, HAC, and JSP models each support different tubulation ranges, so the correct tool depends on the size you need to seal.
Tool Style
Scissor-style and C-frame tools approach the tubing differently. The best choice depends on the available space around the tube and how the tool needs to be positioned.
Access & Approach
For applications with limited access, approach angle can matter. GST jaws are available with 0-degree, 30-degree, or 45-degree approach angles.
Pump Setup
CH Bull can provide a complete hydraulic pinch-off system with the tool and pump matched to your application. Options include air-powered and electrically powered pumps.
Quick Comparison Guide
Use this table as a starting point when comparing CH Bull hydraulic pinch-off tools. CH Bull can confirm the correct tool and pump configuration for your tubing and application.
| Solution | Style | Standard Capacity | Best For | Pump / Setup Notes |
|---|---|---|---|---|
| GST Hydraulic Pinch-Off Tool | Scissor style | 1/8″, 1/4″, 3/8″, 1/2″, or 3/4″ tubulation depending on model | Applications needing scissor-style access or angled jaw options | Available with foot-operated air or electric pump options |
| HAC Hydraulic Pinch-Off Tool | C-frame style | 1/4″ to 1/2″ tubulation depending on model | Smaller to mid-size C-frame hydraulic applications | CH Bull can confirm compatible pump setup |
| JSP Hydraulic Pinch-Off Tool | C-frame style | 1/2″ to 1″ tubulation depending on model | Larger tubulation and heavier-duty applications | CH Bull can confirm compatible pump setup |
Need help choosing a hydraulic pinch-off setup?
Tell us about your application and we’ll help you determine the right tool and power option.
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Need the Right Hydraulic Pinch-Off Tool Setup?
Not sure which tool or pump configuration is right? Tell us about your application, and CH Bull will help you determine the best solution.
