resistant material such as gold as used in the gold plated bellows contact springs distributed by servometer corporation 501 little falls road cedar grove n j 07009 under part no 1571 2 although the bellows mount 20 have been described as having a generally cylindrical shape it will be clear to those skilled in the art that other shapes may also be beneficially employed referring to fig3 a surface acoustic wave device may include the bellows mount 20 of fig2 disposed between acoustic substrate 11 and base 20 which may typically be the base of a to 8 header acoustic substrate 11 comprises non active surface 17 and active surface 16 on which the surface acoustic wave is substantially propagated bellows mount 20 may be coupled to non active surface 17 of acoustic substrate 11 using an adhesive 31 such as epoxy or polyimide resins or if non active surface 17 of substrate 11 has been suitably metallized solder similarly bellows mount 20 may be coupled to base 30 using adhesive 31 such as epoxy or polyimide or materials such as solder additionally bellows 20 may be affixed to base 30 by press fitting or spot welding the bellows to pins 32 pins 32 may.