Manual Pinch-Off Tools
Hand-Operated Tools for Sealing Copper, Aluminum, or Nickel Tubing
Manual pinch-off tools provide a simple, controlled way to permanently seal ductile metal tubing without heat, solder, or filler material. These tools are used for smaller tubing applications where a clean, reliable cold-weld seal is needed in vacuum, refrigeration, laboratory, electronic, cryogenic, laser, and industrial systems.
CH Bull offers manual pinch-off tools in scissor-style and C-frame configurations, with support to help you choose the right model for your tubing and application.
Compare Manual Pinch-Off Tool Options
CH Bull offers two manual pinch-off tool styles for smaller tubulation: scissor-style MST models and the MCI C-frame model. The right choice depends on tubing size, access around the tube, and how the tool needs to approach the work.
MST Scissor-Style Manual Tool
Best For: Smaller tubulation where a compact hand tool can approach the tube easily.
Highlights:
- Scissor-style manual design
- Available for 1/8″, 1/4″, or 3/8″ tubulation, depending on model
- Compact option for bench or field use
- Designed for copper, aluminum, or nickel tubing
- Good fit for controlled, repeatable pinch-off work
MCI C-Frame Manual Tool
Best For: 3/8″ tubulation where a C-frame tool shape provides better access or positioning.
Highlights:
- Manual C-frame configuration
- Standard capacity: 3/8″ tubulation
- Designed for copper, aluminum, or nickel tubing
- Useful when tool access or approach angle matters
- Supported by CH Bull application guidance
Not sure which manual pinch-off tool fits your application?
Tell us what you’re working with, and a CH Bull specialist can help determine the right tool for your application.
How to Choose a Manual Pinch-Off Tool
The right manual pinch-off tool depends on more than tubing diameter. Material, access, preparation, and the required seal quality all matter.
Tubing Material
Manual pinch-off tools are used with ductile metal tubing, including copper, aluminum, and nickel. The material should be suitable for cold-weld sealing and properly prepared before use.
Tubing Size
Choose a tool that matches the tubing diameter. MST manual models are available for 1/8″, 1/4″, or 3/8″ tubulation depending on model. The MCI manual model is designed for 3/8″ tubulation.
Tool Style
Scissor-style tools are a compact manual option for smaller tubing sizes. C-frame tools provide a different approach style and may be better suited to certain access conditions or setups.
Seal Preparation
A successful pinch-off depends on clean tubing, proper annealing, clean anvil surfaces, and steady pressure through the pinch-off. Any contamination or interruption during the process can affect the seal.
Quick Comparison Guide
Use this table as a starting point when comparing CH Bull manual pinch-off tools. CH Bull can confirm which model is right for your tubing and application.
| Solution | Style | Standard Capacity | Best For |
|---|---|---|---|
| MST Manual Pinch-Off Tool | Scissor style | 1/8″, 1/4″, or 3/8″ tubulation depending on model | Smaller tubing applications requiring a compact hand-operated tool |
| MCI Manual Pinch-Off Tool | C-frame style | 3/8″ tubulation | Manual applications where a C-frame tool configuration is preferred |
Need help selecting a manual pinch-off tool?
Tell us about your application and we’ll help you determine the right solution.
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Need the Right Manual Pinch-Off Tool?
The correct tool depends on tubing material, diameter, wall thickness, access, and sealing requirements. CH Bull can help review your application and recommend the right manual or hydraulic pinch-off tool.