This page shows the main reasons why a low-bleed material is advantageous. L37-3L will not cloud on solar panels in the way that traditional silicone products could.  This would produce a marked reduction in operating performance, a reduction in life time, and a loss of efficiency.  L37-3L will not produce oils which could cause PCB corrosion. This would be of particular interest when the product is needed to operate over a long life time in some demanding conditions. L37-3L will not outgas silicone oils in any measurable volume.  However, the unique, chemically-stripped formulation free from the majority of unreacted monomers still retains the softness associated with silicone based products.  As a comparison, a material based on non-silicon technology, with similar out-gassing properties, would be significantly harder. As L37-3L does not outgas or bleed silicone oils, there is no need to address reliability issues for certain devices such as hard-drives and relays.  This allows a greater degree of design flexibility to be achieved.