Universal Mold Release® is formulated especially for mold making and casting. It works well with most liquid rubber and liquid plastic products. It will release mold rubbers (such as polyurethanes and polysulfides) from properly prepared models. Sealing porous models (wood, plaster, concrete) or certain modeling clay (containing water or sulfur) with Smooth-On SuperSeal® or other sealer may be necessary. If using silicone rubber, seal model surface with SuperSeal® only. Do not use UMR. UMR also easily releases a variety of casting materials (epoxies, Smooth-On liquid plastics, etc.) from cured rubber molds. Properly used, Universal Mold Release improves molding efficiency for a variety of casting applications and will actually lengthen the life of your production mold.
Available in aerosol or bulk liquid.


NOT FOR USE WHEN MOLDING SILICONE RUBBER OR CASTING URETHANE FOAM  For silicone rubber, use Ease Release 200  For urethane foam, use Ease Release 2831

Technical Data


Technical Bulletin

See below for applicable MSDS Sheets and Technical Bulletins.


Aerosol Can

UMR0CN 0.75 lb MSDS
x $ 14.20

20 in stock.

1 Gal

UMR1 6.1 lb MSDS
x $ 45.30

1 in stock.

5 Gal

UMR5 30.5 lb MSDS
x $ 161.60

3 in stock.


UMRD 0.0 lb MSDS
x $ 1,464.00

Out of stock.

Other fine products