About CTS Connects

Source Leak Test Seals from the Leak Test Experts—Now Available Online!

CTS Connect® is the official line of leak test seals and connectors from Cincinnati Test Systems (CTS) — a U.S.-based manufacturer and global leader in leak and functional testing solutions for over 45 years. Designed and produced by CTS application engineers, CTS Connect products are built to deliver reliable, long-lasting sealing performance across thousands of production leak testing applications worldwide.

Manufactured with proprietary seal materials and patented designs, our quick connectors are engineered to resist wear, withstand harsh fluids and chemicals, and maintain consistent sealing over time. Introduced in 2005, CTS Connects solutions have become a trusted standard for production leak testing where repeatability and durability matter most.

A reliable, repeatable leak test starts with a perfect seal — and CTS delivers. Backed by decades of leak testing expertise, our team supports customers across industries with sealing solutions developed from real application experience and continuous innovation. When it comes to sealing your leak test, CTS sets the standard.

To make sourcing easier, CTS now offers the official CTS Connects online store, allowing customers in the U.S. to conveniently purchase genuine CTS Connect leak test seals directly from the manufacturer — with the quality, support, and expertise CTS is known for.

Durable Pneumatic and Manual Connectors for Smooth Bores

CTS Connect products include a full line of standard pneumatic connectors in air-actuated or hand-operated designs. Our pneumatic components are engineered to meet standard, metric, SAE, and other sealing requirements and include a variety of products, including:

Pneumatic seals with an inside or outside connect
Hand seals for light clamping and sealing applications
Accessories such as extensions, lead-ins, and springmounts

Note: More options will be added to this store over time. Though we provide connectors to customers worldwide, online orders can only be accepted in the U.S. through this site.

Custom Pneumatic Seals and Components

To fit your irregularly shaped seal surfaces, we also custom-manufacture specialty pneumatic and hand-operated seals and pneumatic connectors. CTS excels at providing customized designs for the most unique sealing applications and offers seal materials in various levels of hardness and tensile strength to meet your requirements. Talk to one of our sealing experts.

Learn more about CTS Connect—watch the webinar on YouTube

Cincinnati Test Systems, Inc. is headquartered in Harrison, Ohio, USA and serves customers globally with leak testing instruments, accessories, and fully integrated test systems.