1 PINCH CLMP NOM SIZE 1-1/4

🔩 1-1/4" Nominal Pinch Clamp (PEX Cinch Ring)

It’s a stainless steel crimp-style clamp used to secure PEX tubing to barbed fittings.

⚙️ Breaking down the description

• 1 PINCH CLMP → pinch clamp (also called cinch clamp or ear clamp)
• NOM SIZE 1-1/4 → nominal size for 1-1/4" PEX tubing connections

🔧 What it does

This clamp is used to:

• Lock PEX tubing onto a barbed fitting
• Create a watertight, permanent mechanical seal
• Replace traditional copper crimp rings in some PEX systems

🏠 Where it’s used

• Residential plumbing (large PEX distribution lines)
• Hydronic heating systems
• Water service lines using large-diameter PEX
• Mechanical room piping

🧰 Key features

• Stainless steel construction (corrosion-resistant)
• Installed using a PEX cinch tool
• Works by compressing a “band” around the tubing
• Compatible with PEX-B and many PEX systems (ASTM F2098 style clamps)

🧠 Simple explanation

It’s basically a metal band that gets squeezed tight around a 1-1/4 inch PEX pipe to lock it onto a fitting so it won’t leak or come off.

⚠️ Important note

• Requires a proper cinch (pinch clamp) tool
• Must match the correct:
  • clamp size (1-1/4 is not universal)
  • tubing OD and fitting type
• Not interchangeable with:
  • copper crimp rings
  • expansion fittings (PEX-A systems)