Why does adding curing agent create many bubbles?

This is a normal physical phenomenon where the liquid produces many bubbles during mixing. It must undergo vacuum exhaust bubble treatment.

Flexible Durable Liquid Silicone for Stone/Cement Mould Making Rubber Silicone

Name: Flexible Durable Liquid Silicone for Stone/Cement Mould Making Rubber Silicone
Brand: GUANGZHOU OTT NEW MATERIALS CO., LTD.
SKU: 1974517105

Guangdong, ChinaGUANGZHOU OTT NEW MATERIALS CO., LTD.

US$6.88

200 kg

Sample price:US$7.85/kg.Request sample

Product profile

Customization

Available

Raw Material

Synthetic Rubber

Material

Silicone Rubber

Model NO.

OTT-S830

Appearance

Liquid

Form

Liquid Rubber

Business Type

Factory Direct Sale

Hardness

30shore a

Color

White

Mix Ratio

100:3

Shrinkage

0.2%

Sample

Available

Trade Term

EXW/CNF/CIF/Fob/DDU

Shipment

by Sea, by Air

MOQ

200kg

Lead Time

7 Days After Payment

Payment

100% Tt in Advance

Transport Package

Plywood Pallet

Specification

5kg, 20kg, 25kg, 200kg, 1000kg drum

Trademark

OTT

Origin

Guangzhou

HS Code

3910000000

Production Capacity

600000

Key features

High Durability & Flexibility: Excellent resistance to heat, deformation, acid, alkali, and aging for long-lasting performance.

Low Shrinkage Rate: Tin cure series 0.2% and platinum cure series 0.1% shrinkage ensure fine detail reproduction.

Food Grade Safety: Environmentally friendly, odorless, and non-toxic silicone suitable for various applications.

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

Fast Delivery: Delivery within 4-6 days after payment confirmation is confirmed.

High Duplication Count: Supports 50 to 1000 duplication times depending on product size and usage.

Professional R&D Support: Dedicated team of 2 R&D engineers and professional QC for quality control.

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: ≤7.92h 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 manufacture?

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 samples for testing purposes.

Q:How is quality controlled in your factory?

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

Q:How to remove bubbles during mould 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 good silicone mould for longer use?

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