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Manhole sealing cushions and test cushions for shaft testing
Do you need to seal a shaft or test it for tightness? Our manhole sealing cushions, also called test cushions, are pneumatic sealing cushions for the shaft area. They are placed inside the shaft and inflated, seal firmly against the shaft wall and reliably close off the cross-section. We stock them in sizes 600 to 650 mm and 800 to 850 mm, matching the common shaft diameters. As a manufacturer based in Bad Abbach, we build them ourselves, Made in Germany. Free shipping within Germany.
Do you need assistance, have questions, or would you like a quote? Feel free to call us for a free consultation.
What our customers say about us
On the independent review platform AUSGEZEICHNET.org, over 3,400 customers have rated us an average of 5.0 out of 5 stars. The reviews come from tradespeople, plumbing companies, industrial firms and municipal utilities, and every single review is verified for authenticity. Clicking on the seal opens the full review overview.
What you need a manhole sealing cushion for
The manhole sealing cushion is used wherever a shaft has to be temporarily closed or tested. Typical tasks are the tightness testing of shafts, sealing the shaft cross-section during rehabilitation and repair work, and holding back inflow from below. Thanks to the pneumatic design, the cushion adapts to the shaft wall and ensures a secure, tight fit. For testing and shutting off pipes, you will find the right products among our test bladders with bypass and shut-off bladders.
Frequently asked questions about manhole sealing cushions
What is a manhole sealing cushion?
A manhole sealing cushion, also called a test cushion, is a pneumatic sealing cushion for the shaft area. It is inflated inside the shaft and closes off the cross-section, for example for a tightness test or for temporary shut-off.
Which sizes are available?
We stock manhole sealing cushions in sizes 600 to 650 mm and 800 to 850 mm, matching the common shaft diameters.
How does a manhole sealing cushion differ from a shut-off bladder?
A manhole sealing cushion is designed for the large cross-sections and geometry of shafts, whereas shut-off bladders are designed for pipes. Both work pneumatically and close off the cross-section by being inflated.
Do you need assistance, have questions, or would you like a quote? Feel free to call us for a free consultation.