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Aug. 16, 2023
Pinch Clamps for Hard Plastic Tubing for Water
Reliable 360° Sealing Solution for PEX and Plastic Pipe Connections
Pinch clamps for hard plastic tubing are widely used in modern plumbing and fluid transport systems to secure PEX tubing and other plastic pipes with reliable, leak-free connections. These clamps feature a stepless, single-ear design, providing uniform compression along the entire pipe circumference to ensure long-term sealing performance.
Compared with traditional crimp rings, pinch clamps offer simplified installation and improved compatibility, as all sizes can typically be installed using the same pinch clamp pliers. This reduces installation complexity and improves efficiency for plumbing installers and industrial assembly lines.
Manufactured primarily from 304 stainless steel, these clamps provide excellent corrosion resistance, mechanical strength, and durability, making them suitable for both residential plumbing systems and demanding industrial environments.
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Key Features of Pinch Clamps for PEX and Plastic Tubing
360° Stepless Sealing Design
The inner ring of the clamp has no gaps or protrusions, ensuring uniform compression around the pipe surface and providing a complete 360-degree seal. This prevents leaks even in pressurized fluid systems.
Single Installation Tool for Multiple Sizes
Unlike crimp rings that require different tools for different sizes, pinch clamps can be installed with the same pinch clamp pliers, improving installation efficiency and reducing tooling costs.
Narrow Band High-Pressure Clamping
The narrow-band design concentrates clamping force on the connection area, enhancing sealing performance for PEX fittings and plastic tubing.
Edge-Treated Clamp Structure
Specially processed clamp edges minimize the risk of damaging plastic tubing surfaces, ensuring safe installation and long service life.
Lightweight Yet Durable Construction
Despite their lightweight structure, these clamps provide strong mechanical holding power and stable sealing performance.
Clamp Series Options
To meet different pipeline sealing requirements, pinch clamps are typically available in several series.
Standard Series Stepless Ear Clamps
Designed for general applications involving flexible and rigid pipe connections.
Size Range | Thickness × Width |
6.5 – 11.8 mm | 0.5 × 5.0 mm |
11.9 – 120.5 mm | 0.6 × 7.0 mm |
21.0 – 120.5 mm | 0.8 × 9.0 mm |
These clamps are widely used in plumbing systems, beverage machines, and industrial fluid equipment.
Reinforced Series Ear Clamps
Reinforced clamps are suitable for applications requiring higher sealing precision or connections involving pipes with low elasticity, such as aluminum-plastic composite pipes.
Size Range | Thickness × Width |
62.0 – 120.5 mm | 1.0 × 10.0 mm |
PEX Series Ear Clamps
The PEX series is specifically engineered for PEX pipe installations in plumbing systems.
PEX Size | Thickness × Width |
13.3 mm | 0.6 × 7.0 mm |
17.5 mm | 0.8 × 7.0 mm |
23.3 mm | 0.8 × 9.0 mm |
29.6 mm | 1.0 × 10.0 mm |
These clamps are commonly used with PEX tubing and PEX fittings in water distribution systems.

Material Options
304 Stainless Steel (Standard)
Most high-quality pinch clamps are manufactured from 304 stainless steel, offering:
Excellent corrosion resistance
Superior stamping ductility
Long-term durability in water systems
Cold-Rolled Steel (Economy Option)
Some low-cost clamps may use cold-rolled steel, which provides basic mechanical strength but lower corrosion resistance.
Installation Method
Pinch clamps are designed for simple and reliable installation.
Installation Steps
Insert the PEX fitting into the plastic tube.
Slide the pinch clamp over the connection area.
Use manual pinch clamp pliers to crimp the ear of the clamp.
The clamp compresses evenly, creating a permanent, secure connection.
When selecting the correct clamp size, it is recommended to measure the outer diameter of the tube with the fitting installed to ensure proper clamping.
Industrial Applications of Pinch Clamps
Plumbing and Water Supply Systems
Pinch clamps are widely used in PEX plumbing installations, ensuring secure and leak-free connections in residential and commercial water systems.
Typical uses include:
PEX water supply piping
underfloor heating systems
hot and cold water distribution
Beverage and Food Equipment
In beverage equipment such as coffee machines, beer dispensers, and beverage processing systems, pinch clamps provide hygienic and reliable hose connections.
Automotive Industry
Automotive systems require hose clamps capable of withstanding vibration and long-term operation. Ear clamps are commonly used in:
engine cooling systems
fuel and fluid hoses
transmission fluid lines
Medical Equipment
Medical devices often require high cleanliness and corrosion resistance, making stainless steel ear clamps suitable for fluid transport components in medical equipment.
Petrochemical and Industrial Fluid Systems
Pinch clamps are also used in industrial pipeline systems transporting corrosive or chemical fluids, where reliable sealing and vibration resistance are essential.

Why Choose Stainless Steel Stepless Ear Clamps?
Pinch clamps are preferred in many industrial applications because they provide:
High sealing performance
Uniform 360° compression
Compact and lightweight design
Permanent secure connections
Fast installation with simple tools
These advantages make them a reliable solution for PEX tubing systems, water supply networks, and industrial fluid connections.
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