Mold Making Rubbers
The TrueCast rubber mold making products combine high strength and durability with easy to use mixing at room temperature. Our urethane molding rubbers provide the highest tensile and tear strength in the industry. TrueCast is available in 11 different Shore A hardness to perfectly suit your mold making needs. Please see chart below to select the best rubber for your mold making project.
TrueCast 00 (0 Shore A) (1 to 1 mix ratio) (30 min working life)
Used for sound absorption mats, vibration and impact control.
TrueCast 10 (10 Shore A) (1 to 1 mix ratio) (30 min working life)
Best for creating molds from sculptures with very deep undercuts.
TrueCast 20 (20 Shore A) (1 to 1 mix ratio) (30 min working life)
Best for creating molds from sculptures with deep undercuts.
TrueCast 30 (30 Shore A) (1 to 1 mix ratio) (30 min working life)
TrueCast 40 (40 Shore A) (1 to 1 mix ratio) (20 min working life)
Our most popular medium hardness molding making product.
TrueCast 50 (50 Shore A) (1 to 1 mix ratio) (7 minute working life
or a Slow version with a extended working life of 12 min.)
TrueCast 55 (55 Shore A) (1 to 1 mix ratio) (30 min working life
or a Slow version with a extended working life of 13 min.)
TrueCast 65 (65 Shore A) (1 to 1 mix ratio) (10 min working life
or a Slow version with a extended working life of 13 min.)
TrueCast 70 (70 Shore A) (2 to 1 mix ratio) (6 min working life)
Excellent for casting rubber parts or hard rubber molds.
TrueCast 85 (85 Shore A) (2 to 1 mix ratio) (8 min working life)
Excellent for casting hard rubber parts or gaskets.
TrueCast 90 (90 Shore A) (4 to 1 mix ratio) (10 min working life)
Our hardest used for casting hard rubber parts.
The TrueCast products are easy to use, simply mix the A and B components together and pour. Within minutes TrueCast begins to cure into a flexible mold or durable rubber part casting. If you are making high production rubber molds for concrete or cast stone we recommend making your molds from (40 Shore A) to (65 Shore A) hardness rubber. If you are unsure of the correct hardness for your project you may request a cured sample block for evaluation. Please fill in our email form and tell us which products you would like to receive cured samples.
Rubber molds are an easy low cost method of manufacturing a variety of concrete and plaster display items as well as industrial wheels, bumpers and seals. A rubber mold is constructed by pouring TrueCast around an existing piece of art, a clay master or industrial part, which has been coated with molding release agent. Within hours the TrueCast molding material can be removed from the master. The finished mold can be filled with a variety of casting materials to make hard or flexible parts. We offer 11 different hardness of molding compounds ranging from Shore 0 A to Shore 90 A. Our softer molding compounds are used to create molds of irregular shaped objects with deep undercuts. Harder TrueCast molding products are used for casting more abrasive concrete or masonry products as well as durable rubber parts. TrueCast products are listed above in order of increasing hardness beginning with our softest GTS-00 and ending with our most rigid GTS-90. The TrueCast molding rubbers can also used as coatings over flexible foams and for casting solid rubber parts like bumpers, gaskets, seals or rubber wall displays.
