41 00... Position of shaped parts for cavity bulkhead
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Cavity sealing is carried out in specific body areas in order to reduce internal noise and to reduce condensate. To do this, shaped parts are inserted in the cavities. These shaped parts adapt themselves optimally due to heating of the body to approx. 180 °C by expansion to the shape of the cavities.
Because it is not possible to heat the body to this extent for a body repair, see 4100... INSTALLING A CAVITY ACOUSTIC BAFFLE (EXPANDED) or 4100... Installing a cavity acoustic baffle (not expanded) has been specified for this situation.