High Strength 1 silicone mold making rubber has a higher durometer than the
other High Strength silicones from Alumilite but still maintains the
exceptional tear strength which makes it great for one or two piece molds that
require a higher hardness. The High
Strength 1 measures a 38A shore hardness.
The High Strength 1 is a tin base silicone and cures against all
different types of clay and substrate without inhibiting. The tin base silicone is a condensation cure
and therefore temperature and humidity may affect the cure speed of the
rubber. The High Strength 1 has a low
viscosity which does not require degassing (always recommended when available)
and will pick up the exact detail of your original. Use the High Strength 1 when you need a
little more stiffness to your mold but still desire an exceptional tear strength. Use Alumilite's Rubber to Rubber mold release or petroleum jelly when making 2-piece molds when using the High Strength 1 rubber due to it's extremely high tear strength.
Prior to use, read all Technical Data Sheets/Instructions and Safety Data Sheets linked below.