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Silicone Rubber (3574)

RTV Silicone Rubber for Concrete Mold Making

FOB Price: US $ 4.5 - 5.8 / Kilogram | Get Latest Price
Min.Order Quantity: 200 Kilogram/Kilograms
Supply Ability: 4000 Kilogram/Kilograms per Day
Port: Shenzhen
Payment Terms: L/C,T/T,Western Union
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Quick Details

Place of Origin:
Guangdong, China (Mainland)
Brand Name:
Model Number:
MCSIL-2066 silicone rubber
Liquid White
Mixing ratio:
Mixed viscosity:
25000-26000 cps
Pot life:
20-30 mins
Curing time:
2-3 Hours
28-30 Shore A
Tear Strength:
27 N/mm
Tensile Strength:
≥3.8 Mpa
Elongation at break:

Packaging & Delivery

Packaging Details: Part A base silicone: 20kg/drum, 25kg/drum or 200kg/drum; Part B CA30 Curing Agent: 0.25kg/bottle,1kg/bottle and 10kg/bottle
Delivery Detail: 3-5 days after receiving payment notice

Introduction of RTV Silicone Rubber for Concrete Mold Making


RTV Silicone Rubber for concrete mold making is a kind of two-component material, that is the moldmaking silicone rubber is made up of Part A base silicone and Part B CA30 curing agent. The mixed Part A base silicone and Part B curing agent can cure at room temperature by a condensation reaction,and the become a siliconer rubber mold that can be used for objects reproduction.These  RTV-2 silicone rubber molds can be cast into different material for your target objects.The pouring material can be plaster, polyurethane, PU, GRC, cement, resin, polyester, wax etc...


Specifications of MC RTV-2 Silicone Rubber


Equiped with REACH certificate 

Professional technician with rich experience 

4% catalyst is offered for free of charge  

Silicone range:10-60 shore A  

High duplicating silicone molds 


Applications of RTV Silicone Rubber for Concrete Mold Making 


RTV Silicone Rubber for concrete mold making is suited for reproduction of cement molding, concrete stones, artificial stones, plaster molding, figures, art objects, decoration molding, GRC products, gypsum products, resin products, PU molds. Etc.


Technical datasheet of RTV Silicone Rubber for Concrete Mold Making 

Base and Curing Agent Mixture (100:2 by weight) in 25 °C (77F) testing


Item No.MCSIL-2066
Curing agentCA30
Mixing ratio100:2
Mixed viscosity25000~26000 cps
Pot life20-30 mins
Curing time 2-3 Hours
Hardness28-30 Shore A
Tear Strength27 N/mm
Tensile Strength≥3.8 Mpa
Relative density 1.09~1.15 g/cm3
Elongation at break420%
Methods of moldingBrushing/Pouring


Instructions for Making Concrete Silicone Molds


1. Make sure the surface of the original is clean and free of loose material. 

2. Weight 100 Part A base and 2 parts of CA30 Curing Agent in a clean container.

3. Stir Part A base silicone before use thoroughly , as filler separation may occur upon prolonged storage.

4. Mix Part A and Part B evenly until the CA30 completely dispersed in the base. 

5. Pour the mixed Part A base silicone and CA-30 curing agent as soon as possible onto the original

6. De-mold after 24 hours ,it is will improve the replicate times of silicone mold.

Note: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 mins 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.


Shortage of RTV Silicone Rubber for Concrete Mold Making  


When the RTV silicone rubber for concrete mold making is stored at or below 30 °C(85 °F) in the original unopened containers, RTV2 Silicone Base and CA30 Curing agent have a usable life of 12 months from the date of production. After 12 months,please use a stirring mill to stir the Part A silicone for some minutes, then the silicone can be use again, no influence for other performance.


FAQ of RTV-2 Silicone Rubber for Mold Making


Why does the RTV liquid silicone rubber for molding have few mold making times?


The silicone rubber mold has few molding times is due to follwoing reasons: adding too much silicone oil which will destroy the molecular of silicone rubber; making the mold for small and fine detailed products with higher hardness silicone rubber which is easy to break; making the mold for large products with soft silicone rubber which will reduce the tensile and tear strength of the mold, and the mold will have deformation. Thus, we should take the proper silicone rubber to make the mold for suitable products.











Customer feedback


  • We are happy with MC RTV-2 silicone rubber and quality. I’ve also been very happy with your best service, let’s continue discussions and work on more. --- Mike (from NY,USA)
  • 100% love the liquid silicone. I will be ordering more this week. ----Kody (from Turkey)
  • We are very pleased with the quality of RTV-2 silicone rubber and the performance.------Richard from UK
  • the RTV-2 silicone rubber has arrived and is excellent------John from Iran
  • I have selled some RTV molding silicone for my customer, they are very happy, so thank you-----Adam from Morroco.


Order infomation


  • MOQ: 200KG
  • Trade term: EXW FOB CFR CIF
  • Delivery time:ONLY ONE DAY FOR SAMPLE CALL, 5-20 Working Days for Mass Order


The information above is just for reference, if you're interested or have any questions, please feel free to contact Nicole:


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DONGGUAN MINGCHENG GROUP LIMITED is dedicated to manufacturing and R&D a wide variety of mold making and casting materials, such as RTV-2 liquid silicone mold rubbers, liquid polyurethane mold rubbers, silicone fluid, electronic potting silicone compound, foams, release agent and so on. These materials can be used for reproduction of any original model to cast PU resin, polyester resin, epoxy resin, concrete, plaster, foam, wax, soap and all the other decorative mouldings.

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Basic Information

Business Type: Manufacturer, Trading Company  
Main Products: RTV2 silicone,RTV-2,silicone,silicone rubber,molding silicone  
Number Of Employees: 51 - 100 People  

Trade & Market

Main Markets: Southeast Asia
Mid East
North America
Northern Europe
Western Europe
South America
Eastern Europe
Total Annual Sales Volume: US$5 Million - US$10 Million  
Export Percentage: 41% - 50%  

Factory Information

Factory Size (Sq.meters): 5,000-10,000 square meters  
Factory Location: No.3 Chuangye 2road Helu Village,Huangjiang Town,Dongguan City  
No. of Production Lines: 2  
Number of R&D Staff: Less than 5 People  
Number of QC Staff: Less than 5 People  
Contract Manufacturing: Buyer Label Offered  

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How It Works

China (Mainland) | Manufacturer, Trading Company | Contact Details
Experience: Established 2010 , 3 years OEM

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Ms. Nicole Hu
Ms. Nicole Hu:
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