What is the recommended catalyst ratio for tin cure silicone?

We suggest adding no more than 2% catalyst. Adding too much reduces operation time and lowers tension and tear strength.

What are the available packaging options?

Regular packages include 1kg, 5kg, 20kg, 25kg, and 200kg drums. Customization packages are also available.

What certifications do your products have?

Our products are certified with ISO, FDA, REACH, and RoHS, ensuring safety for various applications including medical and food-related uses.

RTV2 Moldmaking Liquid Tin Cure Silicone for Making Jewelry Buttons Molds

Name: RTV2 Moldmaking Liquid Tin Cure Silicone for Making Jewelry Buttons Molds
Brand: Dongguan gangtian polymer materials Co.Ltd.
SKU: 2011434625

Guangdong, ChinaDongguan gangtian polymer materials Co.Ltd.

US$5.68

50-499 kg

US$5.58

500-999 kg

US$5.28

1,000-49,999,999 kg

US$3.28

50,000,000+ kg

Sample price:US$5.48/kg.Request sample

Product profile

Customization

Available

Material

Silicone

Application

Household, Medical, Industrial, Agricultural, Mold Making

Model NO.

GTSIL-T10 ~ GTSIL-T40

Certification

ISO, FDA, REACH, RoHS

Component

Part a + Part B (Two Component)

Mixing Ratio

100:2, 100:3, 100:5

Customiation Service

Color, Package

Shrinkage - %

Around 0.2%

Free Samples

Yes

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

Low Shrinkage & High Detail: Shrinkage less than 0.1% ensures fine detail replication for sculptures and prototypes.

Excellent Chemical Resistance: Resists heat, acid, alkali, and aging for durable mold performance.

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

Easy Operation: Low viscosity and good fluidity allow for easy mixing and pouring.

Customizable Options: Color and package customization services are available for bulk orders.

Multi-Industry Application: Suitable for jewelry, medical, industrial, agricultural, and artistic mold making.

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

Certified Quality: Products certified with ISO, FDA, REACH, and RoHS standards.

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: ≤6.88h 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 does the silicone mold get burnt out?

This occurs when using unsaturated resin, which generates heat. You must demould the product within 3 minutes. Our silicone rubber contains special materials to resist high temperatures.

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

Condensation silicone rubber solidifies by absorbing moisture. To fix this, add 0.05% water to the silicone rubber and stir briefly at low speed before use.

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

Weakness is caused by adding too much silicone oil, using excessive catalyst (recommended max 2-5%), or using the mold prematurely. Wait 24 hours after mold creation before use.

Q:Why does the mold appear oily?

The silicone itself does not emit oil. Oiliness is caused by adding composite silicone oil (silicone oil mixed with white mineral oil) during operation.

Q:Why does the silicone mold have traces or unevenness?

This happens if the original model is not smooth or if release agent is applied unevenly. Ensure the model is polished and the release agent is brushed evenly.