Why does adding curing agent create many bubbles?

This is a normal physical phenomenon where liquid produces bubbles during mixing; vacuum exhaust treatment is required.

RTV-2 Liquid Silicone Rubber for Stone Concrete Gypsum Casting Low Shrinkage

Name: RTV-2 Liquid Silicone Rubber for Stone Concrete Gypsum Casting Low Shrinkage
Brand: GUANGZHOU OTT NEW MATERIALS CO., LTD.
SKU: 1981606095

Guangdong, ChinaGUANGZHOU OTT NEW MATERIALS CO., LTD.

US$7.00

1-999 kg

US$4.33

1,000+ kg

Sample price:US$8.00/kg.Request sample

Product profile

Customization

Available

Material

Organic Silicone

Application

Industrial

Model NO.

OTT-S830

Certification

ISO, FDA, REACH

Mixing Ratio

100:3, 100:2, 100:5

Working Time/Pot Life

30~50min

Curing Time

3~4h

Type

Liquid Silicone

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

Low Shrinkage Rate: Shrinkage as low as 0.1% to 0.2% ensures high precision in mold reproduction.

Wide Hardness Range: Available in Shore A 5 to 50, catering to diverse molding requirements.

Multiple Curing Types: Offers both Tin Cured (OTT-S8) and Platinum Cured (OTT-J8) silicone options.

Excellent Deformation Resistance: Resistant to heat, acid, alkali, and expansion for durable mold performance.

Versatile Applications: Suitable for stone, gypsum, resin, jewelry, and furniture molding projects.

100% Quality Inspection: Professional QC team ensures every batch is inspected before shipment.

Long Shelf Life: 18 months shelf life when stored in cool, dry places in original packaging.

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: ≤6.77h 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 silicone products do you make?

We produce liquid silicone, silicone rubber, and silicone oil. Different molds require specific viscosity, hardness, and density to meet client requests.

Q:Do you offer free samples?

Yes, we can provide free samples for testing purposes.

Q:How do you control quality in your factory?

We have a professional QC team that inspects goods 100% before shipment to ensure quality during production.

Q:How to 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 to get a long-lasting silicone mold?

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