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Cut off the end of the hose to remove this plug.
7.2
Empty pipe seal with PU foam
7 Connecting the air hoses
Filling the empty pipe with PU foam may give rise to small leaks. The GRAF
empty pipe seal of PE foam is recommended.
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Push the empty pipe seal into the empty pipe to
seal this tightly.
The hose surfaces and pipe walls must be
cleaned roughly and wetted slightly with water.
When filling the hoses with PU foam, make sure
that each of them is covered on all sides. For bet-
ter filling and enveloping, the hoses should be
moved slightly in the longitudinal direction.
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