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Liquid RTV Silicone Rubber for Mold Making Plaster/Cement/Concrete Molds
US$5.88
50-499 kg
US$5.38
500-999 kg
US$5.08
1,000-49,999,999 kg
US$3.08
50,000,000+ kg
Sample price:US$1.00/kg.Request sample
Product profile
Customization
AvailableMaterial
SiliconeApplication
Household, Medical, Industrial, Mold MakingModel NO.
GTSIL-T35Certification
ISO, FDA, REACH, RoHSComponent
Part a + Part B (Two Component)Mixing Ratio
100:2, 100:3, 100:5Customiation Service
Color, PackageHardness Shore a
34-36 Shore aViscosity - Cps
33000-38000Shrinkage - %
Around 0.2%Free Samples
YesTear Strength - Kn/M2
25-28Tensile Strength - MPa
5-7Elongation - %
350-500%Shipment
by Air, by Sea, by TrainTransport Package
1kg/Drum, 5kg/Drum, 20kg / Drum 25kg/DrumSpecification
liquid silicone rubberTrademark
GangtianOrigin
Dongguan, GuangdongHS Code
3910000000Production Capacity
600 Tons Per MonthKey features
Customizable Color and Package: We offer customization services for color and packaging to meet specific client needs.
Excellent Heat and Chemical Resistance: Resists heat, acid, alkali, and aging, with special materials to prevent burning with unsaturated resin.
High Performance Replication: Low viscosity and high fluidity ensure fine detail duplication and easy de-molding for complex designs.
Long Shelf Life: Stable quality ensures a shelf life of up to 18 months when stored properly.
Versatile Industrial Applications: Ideal for mold making in plaster, cement, concrete, art, sculptures, and industrial prototypes.
Fast Sample Delivery: Samples can be shipped within 1-3 days after payment receipt for quick testing.
Comprehensive Certifications: Product holds FDA, REACH, ROHS, and MSDS certifications for safe transport and use.
Flexible Mixing Ratios: Available in 100:2, 100:3, and 100:5 mixing ratios to suit different curing requirements.
Company profile
CertifiedBusiness Type: Manufacturer/Factory CertifiedR&D Capacity: ODM Service Available & OEM Service AvailableExport Year: 2016-08-08 CertifiedNearest Port: Guangzhou Port, Shenzhen PortAverage Response Time: ≤6.71h CertifiedTerms of Payment: LC, T/T, PayPal, etc.
AI-Powered supplier vetting
SummaryDongguan Gangtian Polymer Materials Co., Ltd. is identified as a China-based manufacturer of silicone and polymer materials, established in 2011, with 59 employees and a 6,000 m² manufacturing plant. Its product portfolio includes RTV 2 silicone rubber, LSR, silicone oil, silicone ink, pigments, and electronic potting compounds. The supplier reports more than 10 production lines and annual capacities totaling 6,900 tons across listed products, as well as exports since 2016 with 21%–30% of sales from exports. It holds an ISO 9001:2015 certificate and reports six R&D engineers and six to ten quality-control staff. The information supports strengths in certification, product breadth, production scale, and international market experience. However, the provided evidence does not sufficiently establish financial credibility, customization capability, or specific customer cases. After-sales capability is indicated by a stated focus on after-service but is not documented in operational detail.
Supplier typeThe supplier is explicitly identified as a manufacturer and as a professional manufacturer of RTV 2 liquid silicone rubbers. Its company type is also described as a limited company, with operations in Dongguan, Guangdong, China.
CertificationsThe supplier holds an ISO 9001:2015 certificate for supplier management systems. This is explicit evidence of a formal quality-management certification.
R&D capabilityThe supplier describes an R&D focus on innovation, reports six R&D engineers, and states that it has developed performance-enhancing silicone solutions. These statements support an established R&D function, although no patents, laboratories, or quantified R&D results are provided.
Production capacityThe supplier reports more than 10 production lines, a 6,000 m² manufacturing plant, and product capacities of 2,500 tons each for tin and platinum silicone rubber, 1,000 tons for silicone oil, 800 tons for electronic potting compound, and 100 tons for pigment. It also states production capacity above 500 tons per month, indicating substantial manufacturing capability.
Product Q&A
Q:Why is the silicone mold only reusable a few times?
A:
This is often due to adding too much silicone oil, which destroys molecular weight, or adding too much catalyst (more than 2%), which reduces tension and tear strength. Also, using high-hardness silicone for small intricate designs or low-hardness for large simple designs can cause issues.
Q:Why does the silicone mold get burnt out?
A:
Burnout occurs when using unsaturated resin without demolding the product within 3 minutes, as the resin generates significant heat. Our silicone rubber contains special materials to resist high temperatures and help avoid this problem.
Q:Why does the silicone mold appear dry outside but wet inside?
A:
Condensation silicone rubber solidifies by absorbing moisture from the air. To ensure shelf life, we dry out the water in the rubber. Solution: Add 0.05% water and stir briefly at low speed before use.
Q:Why is the tear strength of silicone molds weak?
A:
Weak tear strength is caused by adding too much silicone oil to reduce viscosity, adding excessive catalyst (more than 5%, we recommend 2%), or using the mold prematurely. We recommend waiting 24 hours after mold completion and using an outer protective mold.
Q:Why does the mold silicone have poor tension?
A:
Poor tension results from adding too much silicone oil to make the rubber easy to operate, which makes it too soft. This reduces tensile and tear strength, leading to short service life and fewer mold turnovers.
Send Inquiry
*To:Dongguan gangtian polymer materials Co.Ltd.
Dongguan gangtian polymer materials Co.Ltd.*Content:
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