Why do bubbles form after adding the curing agent?

This is a normal physical phenomenon where mixing creates bubbles. You must use vacuum exhaust bubble treatment to resolve this.

What is the curing time for this silicone rubber?

The silicone mold will typically cure in 3 to 5 hours at room temperature.

Is this silicone rubber compatible with plaster?

Yes, it is compatible with a wide range of casting materials including plaster, bonding well during the curing process.

RTV2 Liquid Silicon Condensation Silicone Rubber for Plaster Stone Molding Silikon

Name: RTV2 Liquid Silicon Condensation Silicone Rubber for Plaster Stone Molding Silikon
Brand: GUANGZHOU OTT NEW MATERIALS CO., LTD.
SKU: 1972800375

Guangdong, ChinaGUANGZHOU OTT NEW MATERIALS CO., LTD.

US$4.50-6.88

1 kg

Sample price:US$8.00/kg.Request sample

Product profile

Customization

Available

Material

Organic Silicone

Application

Industrial

Model NO.

OTT-S825

Certification

ISO

Mixing Ratio

100:3, 100:2, 100:5

Working Time/Pot Life

30~50min

Curing Time

3~4h

Hardess

0-50 Shorea

Color

Can Be Adjusted

Transport Package

20kg/Drum, 25kg/Drum or 200kg/Drum

Specification

Liquid Silicone

Trademark

OTT

Origin

China

HS Code

39100000

Production Capacity

8000kg/Day

Key features

Room Temperature Curing: Cures at room temperature without needing heat or specialized equipment.

High Detail Reproduction: Captures fine details and intricate textures for accurate plaster molds.

Excellent Tear Resistance: High tear strength ensures durability and easy demolding without damage.

Low Shrinkage Rate: Shrinkage is almost zero, below 0.2%, ensuring precise mold dimensions.

Versatile Applications: Suitable for plaster, resin, concrete, and special effects in entertainment.

Customizable Color: Color can be adjusted to meet specific client requirements.

Long Shelf Life: Maintains usability and flexibility in the molding process when stored properly.

Easy to Operate: Low viscosity allows easy flow into complex molds with simple mixing.

Company profile

GUANGZHOU OTT NEW MATERIALS CO., LTD.

Guangdong, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service AvailableExport Year: 2022-07-27 CertifiedNearest Port: Shenzhen Port, Guangzhou PortAverage Response Time: ≤8.90h CertifiedTerms of Payment: LC, T/T, PayPal, etc.

AI-Powered supplier vetting

SummaryGuangzhou OTT New Materials Co., Ltd. is a China-based limited company established in 2014, operating in silicone and related chemical materials. It reports five production lines, a 1,700 m² manufacturing plant, broad product coverage, exports representing 90% of total sales, and stated peak- and off-peak-season fulfillment within 15 working days. The supplier holds ISO 9001:2015 certification and describes technical support, after-sales service, and silicone-material innovation capabilities. However, the available information indicates a relatively small organization of 17 employees, fewer than five quality-control staff, and limited documented customer-trade evidence. Financial strength, customization performance, and the depth of customer cases cannot be conclusively assessed from the provided data.

Supplier typeThe supplier is identified as Guangzhou OTT New Materials Co., Ltd., a China-based limited company operating in chemicals and silicone materials. Its listed products include architectural-restoration silicone and mold-making silicone, while its broader product keywords cover multiple liquid, RTV, cured, and specialty silicone products.

CertificationsThe supplier reports holding an ISO 9001:2015 certificate, providing explicit evidence of a certified quality-management system. No other certifications are stated in the provided information.

After-Sales capabilityThe supplier states that three doctoral senior researchers and 12 professional engineers support quality improvement, product development, innovation, and after-sales service. It also explicitly claims to provide technical solutions, after-sales service, and ongoing technical support, although no service-performance metrics or response-time data are provided.

R&D capabilityThe supplier explicitly reports top technology in condensation and addition-cured silicone in China and identifies doctoral researchers and professional engineers supporting new-product development and innovation. Its stated range of related silicone materials further supports technical breadth, though no independently verified innovation results are provided.

Production capacityThe supplier reports five production lines, a 1,700 m² manufacturing plant, and order fulfillment within 15 working days in both peak and off-peak seasons. Its product scope is broad and export sales are stated to represent 90% of total sales, but the small total workforce of 17 employees and fewer than five quality-control staff indicate that operational scale should be verified for large-volume requirements.

Product Q&A

Q:What types of silicone products do you manufacture?

We produce liquid silicone, silicone rubber, and silicone oil. We offer different viscosities, hardness, and densities to meet specific client requests.

Q:Do you provide free samples for testing?

Yes, we can provide samples for testing purposes.

Q:How do you control quality in your factory?

We have a professional QC team that controls quality during production. All goods are 100% inspected before shipment.

Q:How can I remove bubbles during mold making?

After mixing the liquid silicone with the curing agent, place the material into a vacuum machine to remove the bubbles.

Q:How can I make my silicone mold last longer?

Choose the right liquid silicone for your product, avoid using silicone oil as it softens the mold, and wait 2 hours after molding for full curing.