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RTVSP Putty is mixed in equal amounts (1A:1B) by volume/weight.IS-SP35 has a pot life of about 5-20minute with a cure time of about  30-60 min at room temperature (73°F/23°C).

Shrinkage is low and cured rubber is exceptionally strong (very high tensile strength), durable and will resist high temperatures (for casting low-temperature melt metal alloys).

They also resist cure inhibition.

RTVSP Silicones are also FOOD SAFE and can be used for culinary applications.

Features:

-Easy to use, 3 Minute working time, 25 minute cure.
-Ideal for small molds, excellent detail from original.
-Strong, flexible, reuseable molds.
-High Heat range, up to 400o F.
-No Shrinkage.
-Self releasing, no mold release agent required for most applications.
-Odorless, Non Toxic. FDA Compliant, Food Grade.

Applications:

Ideal for a wide range of impression type mold applications including wax, baking, chocolate, ice cubes, soap, plaster, air dry clay, concrete, resin, and low melt metals,include making fast mold impressions from almost any surface, orthotics / orthopedic, equine hoof repair, jewelry

making and more.

Parameter of RTVSP35 silicone putty:

Package: 

500g/set,250g A+250g B 

1000g/Set,500gA+500g B

10KG/Set,5kg A+5kg B

Storage and shelf-life: 

24months, stored in a dry & cool place with 25 centi degrees.