Why does adding curing agent create many bubbles?

This is a normal physical phenomenon. The liquid produces many bubbles during mixing, so vacuum exhaust bubble treatment is required.

Lower Price RTV Silicone Two Component Silicone Rubber for Making Mold

Name: Lower Price RTV Silicone Two Component Silicone Rubber for Making Mold
Brand: GUANGZHOU OTT NEW MATERIALS CO., LTD.
SKU: 1974109805

Guangdong, ChinaGUANGZHOU OTT NEW MATERIALS CO., LTD.

US$7.00

1-2,999 kg

US$4.55

3,000+ kg

Sample price:US$8.00/kg.Request sample

Product profile

Customization

Available

Material

Organic Silicone

Application

Industrial

Model NO.

OTT-S830

Certification

ISO, MSDS

Mixing Ratio

100:3, 100:2, 100:5

Working Time/Pot Life

30~50min

Curing Time

3~4h

Delivery Terms

EXW,CIF,Fob,DAP

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 via condensation reaction without external heat.

High Tear Strength: Features high tear and tensile strength for durable mold reproduction.

Acid and Alkali Resistance: Resistant to acid and alkali chemicals for versatile industrial applications.

Wide Material Compatibility: Suitable for casting plaster, PU, GRC, cement, resin, polyester, and wax.

Multiple Hardness Options: Available in Shore A hardness ranging from 15 to 45 for different needs.

Long Working Time: Working time ranges from 30 to 50 minutes for easy processing.

Customizable Mixing Ratios: Mixing ratios available in 100:3, 100:2, and 100:5 configurations.

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: ≤7.39h 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 silicone with varying viscosity, hardness, and density to meet client requests.

Q:Do you offer free samples?

Yes, we can provide samples for testing.

Q:How is quality controlled in your factory?

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

Q:How to remove bubbles during mould making?

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

Q:How to get a good silicone mould that lasts longer?

Choose the right liquid silicone for your products, avoid using silicone oil as it makes the mould too soft, and wait 2 hours after finishing the mould for full curing.