food grade rtv2 silicone rubber to make molds

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US $8-12 / Kilogram | 200 Kilogram/Kilograms sample is available (Min. Order)
Supply Ability:
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Quick Details
Place of Origin:
Guangdong, China (Mainland)
Brand Name:
Model Number:
3910 0000
food grade rtv2 silicone rubber to make molds
Mixing ratio:
100% food grade
20 Shore A
supply ability:
4 tons/day
high temperature resistance
curing time:
2-3 hours under room temperature
Packaging & Delivery
Packaging Details
food grade rtv2 silicone rubber to make molds
Package: 1kg/drum,5 kgs/drum, 10kgs/drum, 20 kgs/drum,25kgs/drum,200 kgs/drum
Delivery Time
3-5 days after your payment!
Product Description

1.Description of food grade rtv2 silicone rubber to make molds

SP-820 Silicone rubber is platinum cure silicone rubber for mold making food grade certificated . The silicone rubber will be cured under room temperature and can be cured fastly by heating, It’s two-components liquid silicone rubber , the mixing ratio is 1:1 . It has an exceptional fluidity and good operability.Especially ,the platinum cure silicone rubber has a lower shrinkage,higher temperature resistance and it is food grade.


SP-820 is suitable to make silicone cake mold , silicone chocolate mold , silicone fondant mold,etc.... 


2.Characteristics of food grade rtv2 silicone rubber to make molds

*An exceptional fluidity and good operability
*Good tensile strength and tear strength
*Food grade silicone rubber

*high temperature resistance
*good flexibility

*No smell ,non-toxic

*long shelf-time &lifetime

*Lower shrinkage


3.Application of food grade rtv2 silicon rubber for molding

It has 2 main parts application:

First: making many kinds of molds:

*Making molds for: 

                         Low melt metals (mold life can be short) 

                         Cement, Concrete  

                      concrete stones

                         wax molds

                         PU molds

                         resin molds  

 gypsum casting

                         candle molding 

                         chocolate , candy and any other FDA food product mold making

                         prototyping etc.


*Making molds for food grade products: chocolate molds, cake molds, sugar molds,ect.

*Making molds for life casting: real hand molds, real feet molds, dildos molds, sex doll molds, ect.


Second: make silicone products, like silicone insoles, silicone gel, ect.

and  prosthetics arms,  prosthetics hands,  prosthetics foot,  prosthetics legs, ect.

and silicone mask, skin, ect. sex dolls, sex toys, ect.


4.Datesheet of food grade rtv2 silicone rubber to make molds

Item No.


Hardness (shore A°)

Viscosity (CPS)

Tensile-strength( kgf /cm2 )

Tear-strength (kgf /cm2 )


Mixing ratio

operation time (25 )

Curing time( 25 )










20-30 mins

2~3 h



5.Operating instructions of food grade rtv2 silicone rubber to make molds

Step 1: prepare and clean the prototype.
You must make sure your original molds perfect. fix the original mold on a board , then using some assistant material(like cardpaper) to make a frame for to surround the prototype. The frame is no need ,if we make the mold by brushing way .

 Step 2: Take the silicone and catalyst as the ratio1:1 (part A:part B=1:1) ,mix the silicone rubber and catalyst evenly.
*Notes: Molding silicon rubber is a kind of flowing liquid and it contains two parts. Remember to mix part A and part B evenly, otherwise the silicon rubber will be partly solidified and this will bring troubles for your final operation. What’s more, the finished molds will have a short life. All of these will cause a waste of silicon rubber.

Step 3: Vacuum pumping

After mixed the silicone evenly, it is better to release the bubble by Vacuum pumping.

Step 4: Pouring cast or brushing cast

After released the bubble, we can pour/brush the silicone rubber on the prototype
*Notes:Please finished all the steped within the operation time .If not it will cause cross linking reaction, and no more further steps will be available.So,we have to pay attention to the pot life and curing time.


Notice of food grade rtv2 silicone rubber to make molds

SP-820 is platinum cure silicone , which is very easy to cause cure inhibition , so please do remember thoroughly clean the model and tool before operation . Besides , please avoid the condensation silicone rubber (100:2) contact or mix with the following material , otherwise the silicone won’t be cured :

1. Liquid condensation silicone ( condensation silicone not completely cured or organic tin compounds )

2. Sulphur, sulfide and sulfur rubber materials.

3. Amine compounds as well as contains the amine materials.

4.  impurity, organic tin catalyst, acid, alkaline and other organisms containing sulfur, phosphorus and nitrogen will influence the vulcanization of the silicon rubber


Packaging & Shipping


  • Small size:5kg/jar,10kg/jar
  • General size:20kg/pail,25kg/pail,200kg/pail

       Delivery Time

  • Depends on the express you choose and the destination
  • Via Express:General 3-7 business days worldwide

       Shipping Cost

  • Based on the weight of the goods and the destination

      Tracking No.

  • The tracking No. will be sent to you the next day after shipping


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