RTV2 liquid silicone rubber for stone mold making

Product DescriptionRTV2 liquid silicone rubber for stone mold makingCondensation tin cure molding silicone rubber, Tin-based silicone, also called condensation-cure silicone, are two-component materia

  • Name: Silicone rubber
  • Colors: white
  • Weight: kg
  • Price: 6
Product Description

RTV2 liquid silicone rubber for stone mold making

Condensation tin cure molding silicone rubber, Tin-based silicone, also called condensation-cure silicone, are two-component materials which cure at room temperature (RTV) to flexible, high tear-strength rubbers. Tin cured silicone can be poured onto models or they can be made brush-able by adding a Thixotropic additive. They are ideal for molds where easy release or high temperature resistance is required. 


 Very good flowability 
• Middle Shore A hardness (approx. 30) 
• Excellent tear strength 
• High elongation and flexibility 
• Little rate of deformation and shrinkage
• High temperature resist,high tear resist

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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.

Packing & Delivery


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

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

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Our Company

Shenzhen Rongxingda Polymer Material Co.,ltd is a company who main selling molding liquid silicone rubber.  We are a professional silicone material manufacturer, integrating the R&D, production and sales. Main products are Condensation molding silion rubber, Addition molding silicone rubber,Addition electronic potting silicone rubber,Condensation electronic potting silicone rubber,leather printing roller silicone rubber,LED strip light silicone rubber,human casting silicone rubber and so on. All of our products are with high quality and have got I S O, RoHS, Reach and SGS certificates. Our customers are from all over the world. If you are interested in our products, please feel free to contact us for further information.


Shenzhen Rongxingda Polymer Material Co.,Ltd

Our well-equipped facilities and excellent quality control throughout all stages of production enables us to guarantee total customer satisfaction. Besides, our platinum cure silicone rubber has pass FDA certifications,  other certificate have SGS, MSDS, ROHS  and so on. As a result of our high quality products and outstanding customer service. If you are interested in any of our products or would like to discuss a custom order, please feel free to contact us. We are looking forward to forming successful business relationships with new clients around the world in the near future.