Create a Permanent, Hermetic Seal Every Time
Don’t gamble on generic crimpers. We manufacture the industry-standard Manual and Hydraulic pinch-off tools designed to cold-weld copper and aluminum tubing without solder or heat.
Generic Crimpers Can’t Guarantee a Cold Weld
A microscopic leak can scrap an entire production run. The problem isn’t usually the tubing. It’s the tool.
Inferior knock-offs and worn-out anvils fail to create the symmetrical “cold flow” required for a true metallurgical bond.
The Risk of Generic Tools:
Inconsistent Crimps
If the pressure isn’t applied evenly, the metal won’t fuse, leading to slow leaks under vacuum.
Damaged Anvils
Poorly hardened jaws wear out quickly, forcing you to stop production and re-order expensive parts.
Scrapped Production
You shouldn’t have to lose sleep wondering if your seals will hold during the final bake-out.
Don’t let a bad tool be the bottleneck in your production line. Get the reliability of a CH Bull cold weld.
Precision Cold-Weld Technology. Built on the Team Manufacturing Legacy.
For decades, high-vacuum industries have relied on Team Manufacturing pinch-off tools to create permanent hermetic seals in ductile metal tubing. Today, CH Bull continues that legacy with technical support, replacement guidance, and precision pinch-off solutions for mission-critical applications.
Using cold-weld principles originally proven by NASA, these tools collapse tubing with controlled force to create a true metallurgical bond without solder, heat, or added material.
Why Engineers Trust CH Bull:
Continuing the Team Manufacturing Legacy
CH Bull supports original Team Manufacturing pinch-off tools with replacement guidance, technical support, and application expertise.
Cold-Weld Seal
Creates a permanent metallurgical bond without heat, solder, or added material.
Bilateral Pinch-Off Design
Symmetrical anvils collapse the tubing evenly, sealing the grain structure while severing the tube.
High-Temperature Performance
No solder in the seal means CH Bull pinch-offs can withstand demanding bake-out environments.
Built & Supported in California
CH Bull provides application guidance, tool support, and replacement options from our California-based team.
Professional Tools for Sealing Copper, Aluminum, or Nickel Tubing
Manual pinch-off Tools
Portable Precision for the Field
Portable precision tools for field use and smaller-diameter tubing. Available in Scissor (MST) and C-Frame (MCI) styles for 1/8″, 1/4″, and 3/8″ tubing applications.
hydraulic pinch-off tools
For High-Volume Production Lines
High-capacity tools for tubing up to 1″ O.D. Available in Scissor (GST) and C-Frame (HAC/JSP) styles, with optional jaw angles for difficult access.
Confirmed Compatibility. Guaranteed Seal.
We don’t just sell you a tool; we engineer the fit. Our 3-step validation process ensures your specific tubing material will cold-weld perfectly.
Step 1: Validate Your Tubing
We review your material type (Copper/Aluminum/Nickel), O.D., and wall thickness to ensure it is compatible with the cold-weld process.
Step 2: Match the Tool
We identify the exact Manual or Hydraulic model required to generate the symmetrical force needed for a permanent metallurgical bond.
Step 3: Deploy & Seal
You receive a precision-engineered tool ready for production, ensuring repeatable, hermetic seals shift after shift.
Trusted in High Vacuum & Aerospace Applications
When leaks are not an option, critical industries rely on CH Bull pinch-off tools for secure, permanent tube sealing.
Stop Leaks Before They Start
Your production line is too valuable for guesswork. Get the tool that engineers have trusted for over 30 years to hold the vacuum.