Why silicone rubber add curing agent after mixing a lot of bubbles?

This is normal physical phenomena. The liquid will produce a large number of bubbles in the mixing time, so, it must pass through the vacuum exhaust bubble treatment.

Versatile RTV2 Silicone for Easy Cement Mold Making

Name: Versatile RTV2 Silicone for Easy Cement Mold Making
Brand: GUANGZHOU OTT NEW MATERIALS CO., LTD.
SKU: 2156575475

Guangdong, ChinaGUANGZHOU OTT NEW MATERIALS CO., LTD.

US$12.00

1-4,999 kg

US$6.99

5,000+ kg

Sample price:US$8.00/kg.Request sample

Product profile

Customization

Available

Raw Material

Synthetic Rubber

Material

Silicone Rubber

Model NO.

OTT-S830

Form

Liquid Rubber

Sample

Available

Shelf Life

12-18months

MOQ

200kg

Hardness

0-60shorea

Trade Term

EXW/CNF/CIF/Fob/DDU

Business Type

Actory Direct Sale

Transport Package

Wooden Pallet

Specification

1kg, 5kg, 10kg, 20kg, 25kg kits

Trademark

OTT

Origin

Guangzhou, China

HS Code

391000

Production Capacity

6000tons Per Month

Key features

Low Shrinkage Rate: Shrinkage is less than 0.1% for high precision replication.

Long Shelf Life: Shelf life up to 18 months for extended storage stability.

Customizable Color: Silicone and catalyst colors are adjustable to meet specific needs.

High Hardness Range: Available hardness from Shore A 00 to 60 for various applications.

Excellent Detail Reproduction: Perfect for intricate patterns in art, jewelry, and industrial molds.

Free Samples Available: Free samples provided for client testing and quality verification.

Multi-Certification Compliance: Certified with ROHS, REACH, and MSDS for safe transport and use.

Versatile Applications: Suitable for candles, soaps, stone, cement, and resin casting.

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: ≤9.16h 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's silicone products you are making?

liquid silicone, silicone rubber, silicone oil; Due to different silicone molds, our silicone has different viscosity, and cause different hardness, density to meet the requests from client.

Q:Do you offer free sample to client?

Yes, we can provide the sample for test.

Q:How about the quality control in your factory?

We have professional QC team to control the quality during production. Goods will be 100% inspected before shipment.

Q:How to remove the bubbles during my mould making?

After mixing liquid silicone with curing agent, please put the material into vacuum machine to take off the bubbles.

Q:How to get good silicone mould to use longer time?

The best way is: #A, Please choose the right liquid silicone according to your products. #B, Don't use any silicone oil in mold making, because it can make the silicone mould become too soft to use. #C, Silicone mould can be used longer after the whole silicone mould fully cured, so it's better to wait 2 hours after mould finished.