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Don't Compromise your Leak Test.

Sealing Surface

Surface Type

Actuation Method

Max Pressure Rating

CI Pneumatic ID Connector

Pneumatic Connects for Smooth or Threaded Inside Diameter Applications

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CO Pneumatic OD Connector

Pneumatic Connects for Smooth or Threaded Outside Diameter Applications

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HI Manual ID Connector

Manual Connects for Smooth or Threaded Inside Diameter Applications

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HO Manual OD Connector

Manual Connects for Smooth or Threaded Outside Diameter Applications

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Meet the CTS Connects Family

Reliable quick connects designed to create a secure seal and simplify your leak testing process.

What are CTS Connects?

Quick Sealing Solutions for Leak Testing and More

CTS Connects are quick-connect sealing solutions designed to create reliable, repeatable connections without the time and hassle of traditional fittings. Available in pneumatic and manual configurations, our leak test connectors can seal inside diameter (ID) or outside diameter (OD) features on smooth, rough, or threaded surfaces.

These quick sealing connectors are designed for repeated use in manufacturing applications including leak testing, pressure testing, filling, charging, flushing and cleaning. With a range of standard sizes and configurations available, CTS Connects make it easier to quickly connect, seal and test your part.

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NOT SURE WHERE TO START?

Compare CTS Connect options to find the right solution for your application.

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Why choose CTS Connects

Engineered by Leak Test Experts

CTS designs complete leak test systems, not just Connects. That expertise is built into every CTS Connect, delivering reliable sealing performance and consistent results across a wide range of testing applications.

Reliable, Repeatable Performace

CTS Connects provide dependable sealing through repeated use across a wide range of testing environments and applications. Engineered for accuracy and durability, they help ensure consistent and reliable leak test results.

Designed for Longer Seal Life

Proprietary seal materials and purpose-built Connect designs help reduce wear across demanding testing applications. Engineered for durability and long-term performance, they extend seal life and minimize maintenance requirements.

Standard & Custom Expertise

Choose from a wide range of manual and pneumatic Connects for inside diameter, outside diameter, smooth, and threaded sealing applications. When standard solutions aren't the right fit, CTS engineers custom sealing solutions tailored to your unique requirements.

CONNECT ACCESSORIES

Keep your CTS Connect ready for reliable, repeatable performance with the parts and accessories you need. Shop CTS Connect Accessories.

SPARE SEALS

MAIN SEAL KITS

BODY ONLY

LEAD-INS

SPRINGMOUNTS

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Capabilities

Leak Testing

CTS Connect provides a reliable, repeatable seal on smooth, rough, or threaded openings, allowing accurate leak testing without introducing leakage at the connection point. Its proprietary seal materials are designed for long life and consistent performance during repeated test cycles.

Fill Testing

The connectors enable fast and secure connection to parts for filling operations, helping manufacturers efficiently introduce air, fluids, or gases into components while maintaining a leak-tight seal.

Burst Testing

For burst testing applications up to high pressures, CTS Connect provides durable sealing technology engineered to withstand demanding conditions and maintain seal integrity throughout the test.

Pressure Testing

The connectors are specifically designed to provide repeatable pressure-sealed connections, ensuring that measured pressure losses reflect the part under test rather than the connection hardware.

Integrity Testing

When validating component integrity, CTS Connect ensures a controlled sealing interface so manufacturers can confidently verify product performance and compliance with quality requirements.

Clean and Flush Testing

CTS Connect provides a secure, leak-tight connection for delivering air or water through parts during cleaning and flushing processes. Its durable sealing technology allows manufacturers to efficiently remove contaminants while maintaining consistent flow and minimizing downtime from connector wear.

Evacuation and Charge Testing

CTS Connect enables rapid and reliable evacuation and charging of systems by creating a repeatable seal on smooth, rough, or threaded connections. The connectors support applications ranging from vacuum conditions to high-pressure charging, helping manufacturers ensure process efficiency and system integrity.

Seal Testing

CTS Connect is designed to create a reliable, repeatable seal on smooth, rough, or threaded part features, making it ideal for validating seal performance and integrity during testing. Its proprietary seal materials and patented wear-reduction designs help ensure accurate test results, long seal life, and consistent performance across high-cycle manufacturing environments.

Part Handling Testing

CTS Connect products can be integrated into handling and automation systems where a secure connection point is needed for manipulating, positioning, or transferring parts during manufacturing processes.

Industries Using Connects

Automotive

Medical

Consumer Appliance

HVAC/R

Industrial

Custom

CTS Connect Blog

Learn more about quick-connect sealing, leak test best practices, connector selection, seal performance and maintenance, real-world case studies and more with insights from the leak test experts at CTS.

Need Help Finding the Right Solution?

Whether you need a custom solution, help selecting the right product, or simply have a question, our leak test experts are here to help.

Talk to a Leak Test Expert

Trust your Seal to the Leak Test Experts

CI Pneumatic ID Connector

CO Pneumatic OD Connector

HI Manual ID Connector

HO Manual OD Connector

CI Pneumatic ID Connector for Smooth Surfaces

CI Pneumatic ID Connector for Threaded Surfaces

CO Pneumatic OD Connector for Smooth Surfaces

CO Pneumatic OD Connector for Threaded Surfaces

HI Manual ID Connector for Smooth Surfaces

HI Manual ID Connector for Threaded Surfaces

HO Manual OD Connector for Smooth Surfaces

HO Manual OD Connector for Threaded Surfaces

Meet the CTS Connects Family

What are CTS Connects?

Quick Sealing Solutions for Leak Testing and More

NOT SURE WHERE TO START?

Why choose CTS Connects

CONNECT ACCESSORIES

SPARE SEALS

MAIN SEAL KITS

BODY ONLY

LEAD-INS

SPRINGMOUNTS

Capabilities

Industries Using Connects

Automotive

Medical

Consumer Appliance

HVAC/R

Industrial

Custom

CTS Connect Blog

5 Complex Leak Test Sealing Issues Solved—Using CTS Connects

9 considerations to find the right CTS Connect® leak test connectors and seals

A Quick Guide to Cincinnati Test Systems Connect Accessories

A Guide to Selecting Seal Materials for Leak Test Connectors & Fittings

Need Help Finding the Right Solution?