ELJEN Products List EJ-560 distributed by
silicone rubber optical interface
EJ-560 silicone rubber has been developed specially for making optical joints between photosensors and plastic scintillators.   The rubber material is quite soft and flexible and can be made to conform to contoured surfaces.   It is a fully-cured polymer designed so its surfaces are slightly sticky to the touch, and it can be deformed under mild pressure.   Nevertheless, it does not flow like a grease and will not extrude irreversibly out of its composition regin.   Hence it is ideal for long-term coupling of photomultiplier tubes to scintillators.
Pads of EJ-560 are presently available in thickness of 1mm, 1·1/2mm, 2mm and 3mm and in diameters ranging from 10mm up to 125mm.   It is also available in sheet form and can be easily cut to size with razor blades or scissors.   The maximum available sheet size is 33cm x 53cm.   All EJ-560 products are shipped with the surfaces masked with an easily removed thin polyethylene sheet.
EJ-560 rubber will easily adhere to any smooth surface and can also be easily peeled away without damaging either component.   However, they can be cleaned with aid of any lower alcohol such as isoproryl alcohol and hence restored to their original condition.
density, gram/cc ...... 1.03
Hardness, Shore A ...... 16 ~ 24
Reflective index ...... 1.41
Operating temperature range ...... -20°C  ~  +100°C

EJ-560 standard sizes:
  3.0mm thick
  2.0mm thick
  1.5mm thick
  1.0mm thick
  28mm, 38mm, 51mm   (dia)
   330mm x 530mm  cut sheet
   265mm x 330mm  cut sheet
   165mm x 265mm  cut sheet
EJ-560 transmittance date is supplied by the courtesy of Hamamatsu Photonics, Electron Tube Division.

G-tech, Corp.    local representative in Japan
365-1, Sayamagahara, Iruma-shi, Saitama 358-0032
Phone# 04-2935-2777 Fax# 04-2935-2778  

  |   ELJEN top   |   ELJEN products   |   G-tech index   |