ABOUT 4X BLUE™

4X Blue™ Silicone Mold Rubber is an economical, very firm rubber with moderately high tear strength and is intended to be used for flat pieces. This rubber is designed for the powder separation method but standard molding methods can also be used. We recommend that you use stainless steel mold plates as this product tends to adhere more strongly to aluminum plates.

MAKING THE MOLD:

Using scissors, cut enough rubber to fill the mold frame to about 1/2 to 2/3  full. Work in with your fingers or a blunt tool.

Push model into rubber to proper position and then cover over with  additional rubber. Work into place, being sure to over pack slightly.

Place mold frame in vulcanizer pre-heated to 350ºF (177ºC ) Vulcanize 15 minutes per 1/4" (6.35mm) of thickness. A 3/4" (19mm)  frame requires 45  minutes.

Release agent is not required.
Shrink rate is 1.6% (rubber only)
Maximum long term temperature exposure: 500ºF.
Maximum short term temperature exposure: 900°F.