2025 New High Quality Grade Liquid RTV2 Silicone Rubber Soft Mold Making

• Customization: Available
• Raw Material: Natural Rubber
• Material: Silicone Rubber
• Model NO.: OTT-J820
• Appearance: Liquid Silicone
• Form: Liquid Rubber
• Mixing Ratio: 100:3, 100:2, 100:5
• Working Time/Pot Life: 30~50min
• Curing Time: 3~4h
• Shelf Llife: 18 Months
• Transport Package: Plywood Pallet
• Specification: 5kg, 20kg, 25kg, 200kg, 1000kg drum
• Trademark: OTT
• Origin: China
• HS Code: 39100000
• Production Capacity: 8000kg/Day
• Package Size: 21.00cm * 11.00cm * 14.00cm
• Package Gross Weight: 1.500kg

Product Description

Product Description

High Quality Grade Liquid RTV2 Silicone Rubber Soft Mold Making

Platinum-cured molding silicone is a two-part-kind liquid silicone, which belongs to food-grade 
silicone, can be cured at room temperature, and mainly used for mold making of food-grade molds, 
jewelry casting, tire molding, rapid prototyping, vacuum foaming, etc. It also suits any 
condensation silicone's application for molding. With appropriate hardness, good tensile and tear 
strength, and excellent resistance to deformation, finished silicone molds have not only a durable 
life but also good performance.

Characteristics:

1. Low viscosity for easy mixing,great for making simple one- or two-piece block molds.
2. Perfect for art and industrial applications,often used for molds to reproduce sculptures and other prototypes, casting plaster, resins, and wax. 3. Very good fluidity for easy pouring operation.
4. Stable quality & non-oily.
5. Good tension for easy de-molding.
6. Good duplication with fine details.
7. High performance in replication.
8. Excellent resistance against heat, acid & alkali and aging.
9. Low shrinkage (less than 0.1%).
10. Long Shelf-life up to 18months.

Specification

High Quality Grade Liquid RTV2 Silicone Rubber Soft Mold Making

Item	OTT-J800	OTT-J805	OTT-J810	OTT-J815	OTT-J820	OTT-J825	OTT-J830	OTT-J835	OTT-J840
Mixing Ratio	1:1	1:1	1:1	1:1	1:1	1:1	1:1	1:1	1:1
Color	translucent
Hardness(shore A)	0	5±2	10±2	15±2	20±2	25±2	30±2	35±2	40±2
Viscosity (mPa.s)	1300±400	1500±500	2000±1000	3000±1000	4500±2000	5000±2000	6000±2000	6000±2000	7000±2000
Working Time(25℃)	20-40mins
Curing Time (25℃)	3-5h	3-5h	3-5h	3-5h	1h	3-5h	3-5h	1h	3-5h
Tear-Strength (kN/m)	≥3	≥12	≥15	≥18	≥24	≥22	≥21	≥22	≥18
Tensile- Strength (Mpa)	≥1.9	≥2.2	≥4.2	≥5.2	≥5.2	≥6.2	≥6.5	≥6.5	≥7.8
Elongation (%)	≥500	≥500	≥450	≥450	≥500	≥500	≥450	≥450	≥450
Shrinkage(%)	≤0.1	≤0.1	≤0.1	≤0.1	≤0.1	≤0.1	≤0.1	≤0.1	≤0.1

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 platinum catalyst silicone and add 100G parts B silicone rubber 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.

Packing & Delivery

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

Certifications

Company Profile

OTT New Material Co., Ltd. is located in Guangzhou, Guangdong. We are a leading professional manufacturer of silicone material with integrating R&D, production and sales. Our customers are from all over the world. If you are interested in our products, please feel free to contact us for further information.

FAQ

Please enter the title here

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.