Why does the silicone mold appear oily?

The oil is not from the silicone itself but from composite silicone oil (silicone oil mixed with white mineral oil) added during operation.

Why does the silicone mold appear dry outside but wet inside?

This is typical for condensation silicone rubber. To fix it, add 0.05% water and stir briefly at low speed before use.

What is the shelf life of the product?

The product has a long shelf life of up to 18 months when stored properly.

Silicone Mold Making Materials 1: 1 Food Safe RTV2 Platinum Silicone Rubber

Name: Silicone Mold Making Materials 1: 1 Food Safe RTV2 Platinum Silicone Rubber
Brand: Dongguan gangtian polymer materials Co.Ltd.
SKU: 1966133632

Guangdong, ChinaDongguan gangtian polymer materials Co.Ltd.

US$8.88

1-199 kg

US$7.88

200-9,999,999 kg

US$4.88

10,000,000+ kg

Sample price:US$9.00/kg.Request sample

Product profile

Customization

Available

Raw Material

Silicone Rubber

Material

Silicone Rubber

Model NO.

GTSIL-P0 ~ GTSIL-P65

Appearance

Liquid

Form

Odourless Translucent Liquid Colloid

Component

Part a + Part B (Two Component)

Application

Mold Making or Silicone Material

Mixing Ratio

1:1, 10:1, 9:1

Customiation Service

Color, Package

Hardness Shore a

00-65 Shore a

Shrinkage - %

Below 0.1%

Free Samples

Yes

Certification

RoHS, Reach, MSDS, Safe Transport of Goods by Sea/

Shipment

by Air, by Sea, by Train

Transport Package

1kg/Drum, 5kg/Drum, 20kg / Drum 25kg/Drum

Specification

liquid silicone rubber

Trademark

Gangtian

Origin

Dongguan, Guangdong

HS Code

3910000000

Production Capacity

600 Tons Per Month

Key features

Food Grade Safety: Platinum cured RTV2 silicone rubber, FDA and RoHS certified, safe for food contact applications.

High Precision Replication: Low shrinkage below 0.1% ensures excellent duplication of fine details and intricate designs.

Customizable Options: Color and packaging are customizable to meet specific brand or project requirements.

Long Shelf Life: Stable quality with a shelf life of up to 18 months under proper storage conditions.

Versatile Applications: Ideal for mold making in food, jewelry, art, prosthetics, and rapid prototyping industries.

Easy Processing: Low viscosity and good fluidity allow for easy mixing, pouring, and simple demolding.

Fast Delivery: Mass production orders typically ship within 3-7 days after payment receipt.

Manufacturer Direct: Direct from factory with 20 years experience, 600 tons/month capacity, and OEM/ODM support.

Company profile

Dongguan gangtian polymer materials Co.Ltd.

Guangdong, China

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: ≤6.13h 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:What certifications does the silicone rubber have?

The product is certified with FDA, RoHS, REACH, MSDS, and is safe for sea/air transport.

Q:Can the color and packaging be customized?

Yes, we offer customization services for both color and packaging to suit your needs.

Q:What is the lead time for mass production?

Mass production orders are normally shipped within 3-7 days after receiving payment.

Q:Why does the silicone mold get burnt out?

This happens when using unsaturated resin without demolding within 3 minutes due to heat generation. Our rubber has high-temperature resistance to help avoid this.

Q:Why is the tear strength of silicone molds weak?

Weakness is often caused by adding too much silicone oil or catalyst, or using the mold prematurely. We recommend waiting 24 hours before use.