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The information contained in this Success Story is intended to assist you in designing with Rogers’ PORON polyurethane foam materials. It is not intended to and does not create any
warranties, express or implied, including any warranty of merchantability or fitness for a particular purpose or that the results shown on the Success Story will be achieved by a user for
a particular purpose. The user should determine the suitability of Rogers’ PORON materials for each application. The Rogers logo, PORON and Helping power, protect, connect our world
are trademarks of Rogers Corporation or one of its subsidiaries. © 2015 Rogers Corporation, All rights reserved. Printed in U.S.A. 1215-PDF. Publication # 17-306
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APPLICATION SUCCESS STORY
CUSTOMER PROBLEM
Two of the automotive industry’s largest manufacturers approached Rogers to eliminate a noise and vibration
issue that arose when the fuel tank vibrated against other components of the automobile. The high compression
set of the old materials caused gaps between the fuel tank, which has a non-linear shape, and the other flatter
surface components of the car. Also, one of the manufacturers who was using a vinyl nitrate gap filler experienced
melting of the material onto the fuel tank, creating a potential safety hazard.
THE ROGERS
SOLUTION:
PORON® POLYURETHANE FOAMS
The automotive solution required a material with
excellent compression force deflection (see
illustration) to apply enough force to fill the uneven gap
between the fuel tank and its surrounding components
as well as provide a low compression-set resistance to
ensure a long lasting seal.
Rogers Collaborates with Automotive
Manufacturers to Provide a Quieter Ride
Rogers PORON® 40 Urethane Foams Solve Fuel Tank Vibration and Noise Problems
Ro
gers’ PORON 40 formulation foams not only filled
the gap and provided a long lasting seal that
dampened the vibration and prevented noise, its
temperature resistance allowed it to hold up in
varying weather conditions. Automotive designers
sometimes initially select lesser, cheaper gasketing
products but after thorough testing, found that
Rogers’ products last longer and perform more
reliably in extreme temperatures.
RESULT
In the fuel tank application, PORON 40 formulation
polyurethane foams maintained a temperature
resistant seal, completely filling the uneven gap
between the fuel tank and other components and
eliminating the noise caused by the vibrating
components coming into contact with each other.
This allowed the two automotive manufacturers to
provide the reliable, safe, and quiet ride their
customers expect from their vehicles. In addition, both
companies saved money for their automobile owners
by providing long lasting protection and unnecessary
recalls stemming from a product that could melt onto
the fuel tank.
Compression Force Deflection (CFD) is defined as the push-back
force (in psi or kPa) of the foam when compressed to a specific
percentage of the nominal thickness.
What does it do? CFD represents how much force is exerted on certain
object in an application. All applications are unique and the CFD curves
will help identify the best possible products to use. A high CFD will push
back very hard, potentially holding objects in place. Very low CFD
curves can be used for sensitive components that could be damaged
from too much force.
Max Force /
Stress
Strain %
Thickness