High Durometer Addition Cured Silicone RTV-2 Rubber for Rapid Prototyping Mold Making

• Material: Organic Silicone
• Application: Industrial, DIY Art
• Certification: ISO, FDA, MSDS
• Shipping Cost: Estimated freight per unit.: about shipping cost and estimated delivery time.
• Currency: US$
• Return&refunds: You can apply for a refund up to 30 days after receipt of the products.
• Model NO.: OTT-X740
• Hardness: 40 a Shore
• Color: Transparent
• Mix Ratio: 1:1 or 10:1
• Shelf Life: 18months
• Pot Life: 5-30mins
• Demold Time: 4-6 Hours
• MOQ: 1kg
• Shipping Terms: Fob/CNF/CIF/EXW
• Curing Time: 1-4h
• Shrinkage: 0.1
• Packing Details: 20kg/Iron Drum
• Delivery Time: 3-5 Days
• Transport Package: Plywood Pallet
• Specification: 5kg, 20kg, 25kg, 200kg, 1000kg drum
• Trademark: OTT
• Origin: Guangzhou
• HS Code: 3910000000
• Production Capacity: 600000
• Package Size: 21.00cm * 11.00cm * 14.00cm
• Package Gross Weight: 1.500kg

Product Description

 

Product Description

Addition Cured Silicone RTV2 Rubber used for making:

• molds of concrete, stone, 
• Rapid prototyping
• GRC, gypsum decoration, plaster ornaments, 
• fiberglass products, 
• polyester decoration, 
• unsaturated resin crafts, polyresin crafts, polyurethane,
• bronze casting,
• wax, candle, soap
• sculpture
• food mold, cake mold

Product Parameters

Platinum cure silicone

 

Typical general characteristics	Inspection Method	Model code
Product data (catalyzed A+B)		OTT-X740
Hardness	Shore A	40
Mix ratio	A:B	1:1
Color	/	transparent
Pot life	25ºC(77F)	20-30mins
Curing time	25ºC(77F)	4-8H
Viscosity	mPa.s	20000±1000
Tensile strength	MPa	6.0
Elongation	%	450
Shrinkage	%	0.1

Features:

• Two-part silicon rubber: flowable liquid silicon and  platinum catalyst.
• Cures at room temperature within 3-5 hours.
• An exceptional fluidity and good operability.
• Good tensile and tear strength, low shrinkage.
• High duplication times.
• High elasticity for easy removal of complex replica parts
• Food grade non toxic

Installation Instructions

Step 1: prepare the original molds
Make your original molds perfect. fix it on a board. And fix the original mold on a board , then used four piece of board to enclose the original molds . 
Step 2: Take 100 G parts A and add 100G parts B and mix them evenly. 
*Notes: Mold making silicon rubber is a kind of flowing liquid ,it contains two parts. Part A is a kind of flowing white liquid and part B is the curing agent or catalyst .Pls follow the step strictly:
1.Weigh the two part exactly by electronic weight. If not, for example add too much catalyst , the operation time will be too fast to operate ,which will cause inconvenience to operate . 
2.Mix part A and part B evenly. Otherwise the silicon rubber will be partly solidified and this will give birth to difficulties in your final operation. What's more, the finished molds will meet a short life. All of these will cause a waste of silicon rubber. 
Step 3: Vacuum pumping(optional)
Without exception, this step takes less than 10 minutes. Otherwise, it will cause cross linking reaction, and no more further steps will be available. 
Step 4: Pouring casting or Brush operation
*Notes:1. For simple pattern products we suggest use pouring operation way, which will be very easy to operate and demould. Pourable silicone require low viscosity which will be easy to flow smoothly and easy to de-air . 
2.For delicate pattern products we suggest use brushing operation way, which can copy the pattern exactly. Brushable silicone require high viscosity which won't be easy to flow away and easy to brush. 
3. We sugges to set the silicone mold for another 12 hours after demould before you put it into a large production.
 

Our Advantages

1.high quality similar to global big brand
2.18 months shelf life
3.50-1000 duplication time decided by product sizes
4.silicone non toxic, environment friendly
5.fast delivery within 4-6 days
6.shipment by air or by sea is available
7.24h after sales service 
8.professional R&D team

Packaging & Shipping

Packing : 20KG, 25KG, 200 KG per drum 
Shipping : by air & by sea 
Delivery time: within 4-6 days after your payment confirmed in our bank 
Storage: Storage in cool, dry places. 
Shelf life: 18 months with the original unopened package 

FAQ

1. What's silicone products you are making?
--liquid silicone, silicone rubber, silicone oil; Due to different silicone molds, our silicone has different viscosity, and cause different hardness, density to meet the requests from client.  

2. Do you offer free sample to client?
--Yes, we can provide the sample for test.  

3. How about the quality control in your factory?
--We have professional QC team to control the quality during production. Goods will be 100% inspected before shipment.  

4. How to remove the bubbles during my mould making?
--After mixing liquid silicone with curing agent, please put the material into vacuum machine to take off the bubbles.  

5. How to get good silicone mould to use longer time?
--The best way is:   
#A, Please choose the right liquid silicone according to your products.   
#B, Don't use any silicone oil in mold making, because it can make the silicone mould become too soft to use.   
#C, Silicone mould can be used longer after the whole silicone mould fully cured, so it's better to wait 2 hours after mould finished.  

6. Why silicone rubber add curing agent after mixing a lot of bubbles?  
--This is normal physical phenomena. The liquid will produce a large number of bubbles in the mixing time, so, it must pass through the vacuum exhaust bubble treatment.