Professional Grade Moldmaking Silicone and Polyurethane Casting Resin systems being offered for both master moldmaker and Hobbyist alike

Whether you are making your silicone molds and resin castings in a large manufacturing facility, special FX shop, theme park, bronze fine art foundry, art studio, pastry or chocolate shop, or your your garage, or you are making a silicone mold for the first time on your kitchen table.......whatever the application requires Hobby Silicone / MPK Enterprises has the right RTV MOLD MAKING SILICONE SOLUTION for you.

Condensation Cured Mold Making Silicones
Soft, Medium, Firm and Extra Firm Durometer

Condensation Cured Mold Making Silicones

We have a wide variety of shore A hardness and catalyst systems to fit all your moldmaking needs.
Our mold making silicones have:
Platinum Silicones
Platinum Silicones

Platinum Silicones

  • We have 30, 45, 60, 62, 70, and 80 Shore A Platinum Silicones.
  • With a 30-90 min work times
  • QM230 and QM245 is also certified and can be used for the making of FOOD GRADE Silicone Molds
  • QM264 High Temp - Ideal for casting Low Melt Metals, Pot life approx 120mins and demold time is 18 hours.
Polyurethane Casting Resins -from 2 to 80 lbs kits
From 2 lbs to 80 lbs, we have what you need

Polyurethane Casting Resins -from 2 to 80 lbs kits

MPK70 is Ideal for casting plastic sculptures, models, prototypes. masters, figurines, toys, industrial parts, decorative ornaments, moldings, and fine detailed reproductions.
  • 65 to 70 Shore D Hardness
  • Paintable / Pigmentable
  • Gel Time 180 Sec to 10 Minutes
  • Fast Demold Time / No Leeching
  • Very strong with a slight flex, NOT BRITTLE
  • Water thin to pour
  • Very easy to sand even on big castings


comes in many colors
Supplies and Tools

Supplies and Tools

Starter Kits

Starter Kits

for beginners!

Choose a Firm 128 Regular Pot Life Kit or 2125 Kit including 2 oz Catalyst, and 2lb Kit of MPK70 Casting Resin

What others say about MPK Silicones and Resins.

  • Both myself and my staff were very pleased with the quality and performance of QM 2125. I found the QM 2125 to perform virtually identically with other quality molding silicones but with better pricing.
    Steve Wang - Biomorphs
  • MPK's resins and silicones are of the highest quality...every batch is consistent and always performs with the reliability...MPK-70-180 is the best modeler friendly resin I have ever used.
    James Hakola – MrDandy.com
  • The paint adhesion was far superior to any silicone I’ve used before. So much so that even after extensive handling, there was no detectable wear...I thoroughly endorse the mold making silicones that Mike Knott has provided me.
    Paul R Barnes - FX MASTERS
  • MPK 2125 performed beautifully, capturing excellent detail and our molds cured at standard hardness in only 2 hours (nothing I had ever seen before). Now it is the only silicone that enters my facilities for mold purposes.
    Michael Dinetz - Haunted Dreams Effects Studio