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Quick Details

  • Place of Origin: Guangdong, China (Mainland)
  • Brand Name: Rongxingda Silicone
  • Model Number: RTV855
  • Color: red/blue
  • Viscosity Mpa.s: 21000±1000
  • Hardness Shore A: 55±1
  • Tear Strength (KN/m): 20±2
  • Tensile Strength (Mpa): ≥2.2
  • sample: available
  • Elongation break (%): 128
  • Certificate: ISO, ROHS, REACH, SGS
  • usage: making mold
  • Technical support: free

Packaging & Delivery

Packaging Details PartA(silicone): 1kg/bottle, 5kg/drum, 25kg/drum, and 200kg/drum
PartB(catalyst):40g/bottle, 0.2kg/bottle, 1kg/bottle, and 2kg/bottle
Delivery Time 5days


Product Description

 RTV mold making addition silicone are generally named as two-part addition 

silicone rubber that vulcanises at room temperature.Part A is a flowable liquid, 

part B is the curing agent(platinum catalyst). It features an exceptional fluidity ,

good operability,excellent physical properties and very low shrinkage. 

The mixing ratio between Part A and Part B can be 10:1 or 1:1.


 Artificial stone products molding,Wax casting 

 Lighting & candles crafts,stationery gifts,crafts industry

 Making molds for gypsum,GRC,concrete,resin products etc 

 Casting for Statue,Buddha,Christmas ornaments,sculptures,figures etc

 Unsaturated rein crafts,epoxy resin crafts, poly resin crafts,polyester resin

 Decoration building mold making (cornice,column, balustrade, ceiling, pedestals,fountains, mantels, wall ornament, planter,furniture decorative etc.) 


Packaging & Shipping

PartA(silicone): 1kg/bottle, 5kg/drum, 25kg/drum, and 200kg/drum

PartB(catalyst):40g/bottle, 0.2kg/bottle, 1kg/bottle, and 2kg/bottle


Our Services

 How to make mold?


Please weight 100 Part A base and 2 parts of organic tin catalyst in a clean container.Thoroughly stir Part A base silicone before use, as filler separation may occur upon prolonged storage. Mixing Part A and Part B evenly until part B completely dispersed in the base. Hand or mechanical mixing can be used,but do not for an extended period of time or allow the temperature to exceed 35°C. Mix suitably small quantities to ensure thorough mixing of base and catalyst.

It is strongly recommended that entrapped air be removed in a vacuum chamber,allowing the mix to completely expand and then collapse. After a further 1-2 minute under vacuum,the mix should be inspected and can be used if free of air bubbles. A volume increase of 3-5 times will occur on vacuum de-airing the mixture. So a suitably large container should be chosen.


2.Pouring the mixture and curing

Pour the mixed Part A base silicone and part B organic tin catalyst as soon as possible onto the original,avoiding air entrapment.The catalyzed material will cure to a flexible rubber within 6 hours(or faster by different mixing ratio or room temperature),we advice you de-mold after 24 hours ,it is will improve the replicate times of silicone mold.

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Company Information

Dongguan Rongxin Silicone Technology Co., Ltd is found in 1999, and located in Longhua Shenzhen. We are a polymer material manufacturer who is integrated in R & D, production and sales. And we have set up Shenzhen Rongxingda Polymer Material Co., Ltd in 2012

Our products are with high quality and have gotten ISO, ROHS, REACH and SGS certificated . Customers are from all over the world. Specially, in America, Europe, and Southeast Asia, many customers are keeping a long term cooperation with us.

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