End caps - closing plugs

Do you work with pneumatic systems and want to safely seal pipes, connections, or ports? With the right caps, plugs, and stoppers, you prevent leaks, contamination, and pressure loss. This ensures reliable and efficient operation of your installation.

In industrial environments, proper sealing is essential. Whether you work in machine building, industry, or maintenance, you need components that fit immediately, seal properly, and last a long time.

What are caps, plugs, and stoppers?

Caps, plugs, and stoppers are used to seal open connections in pneumatic systems:

Caps are screwed onto external threads and fully seal them
Plugs and stoppers are screwed into internal threads to seal openings

This protects your system against dust, dirt, and moisture and prevents pressure loss.

Applications in pneumatics

These sealing solutions are used for:

Temporarily sealing unused connections
Safely closing pipes during maintenance
Sealing pressure points in installations
Protection during transport and storage

By choosing the right version, you prevent downtime and extend the lifespan of your installation.

Versions and thread types

We supply sealing plugs for G threads, RP threads, NPT threads, and JIC threads in common designs, for example according to DIN 906, DIN 908, and DIN 910. These are screwed into internal threads to seal them. Caps are screwed onto external threads and seal them as well.

You can choose from various versions, such as:

With hex socket
Without collar
With square head
With O-ring seal
With tapered thread

This allows you to easily match the product to your application and installation requirements.

Material selection for every environment

Depending on your working environment, you choose the right material. We offer:

Brass: the standard in pneumatics, durable and versatile
Galvanized steel: strong and cost-effective for general applications
Stainless steel (SS): ideal for aggressive environments and the chemical industry
Malleable iron galvanized: extremely robust for heavy industry
Plastic: lightweight and resistant to specific chemical influences

Working in a corrosive environment or with high pressure? Stainless steel or nickel-plated brass is often the best choice. For lighter applications, plastic can be a cost-effective solution.

Why order from Pneuparts?

A well-chosen cap, plug, or stopper ensures:

Reliable sealing without leakage
Less maintenance and fewer malfunctions
Longer lifespan of your installation
Quick and easy installation

Not sure which cap, plug, or stopper you need? Feel free to contact us, and we will help you with technical advice so you always make the right choice for your pneumatic application.