Grafenberg, Germany -- German carmaker BMW has granted a series release for use of two-component sealing gasket materials made by RAMPF Giessharze GmbH & Co. KG, in all its vehicle models.
Designated Raku-PUR 32-3250-26, the foam gasket system is thixotropic and simple to apply, even on components with the most complex geometries, the firm said in an 8 Sep press release, adding that it gives seals with "impressive mechanical strength and low emission values."
Rampf has been a supplier of polyurethane foam gaskets for exactly 30 years and emphasises that it does not supply off-the-peg solutions, but works with customers to provide optimised solutions.
In the present case, it worked with BMW specialists to develop a seal for the partition cover between the engine and passenger compartments, focusing on providing a safe, low-emission, efficient sealing for a highly complex three-dimensional component contour.
The Raku-PUR 32-3250-26 system offers above-average adhesive properties in contact with the metal partition surface, Rampf claims, adding that this eliminates the need for an external adhesive or primer. In addition, the high viscosity of the system stops the foam from running even on vertical application surfaces and ensures the formation of a uniform bead.
Finally, the system has low emission in use and, when cured, the foam provides good adhesion to metal and impressive mechanical strength, while its stable integral skin guarantees low water absorption. The system also has extreme temperature resistance.
In brief, Rampf says, it complies with the physical and mechanical as well as emission requirements set out by the BMW Group specification TL 8350151, and will form an integral part of the BMW 7 vehicle series in the future, the announcement concluded.