Why does silicone rubber produce bubbles after adding the curing agent?

This is a normal physical phenomenon where liquid produces many bubbles during mixing. It must pass through vacuum exhaust bubble treatment to resolve this.

RTV-2 20 Shore-a Liquid Silicone Rubber for Making Shoe Insole

Name: RTV-2 20 Shore-a Liquid Silicone Rubber for Making Shoe Insole
Brand: GUANGZHOU OTT NEW MATERIALS CO., LTD.
SKU: 1996283105

Guangdong, ChinaGUANGZHOU OTT NEW MATERIALS CO., LTD.

US$8.98-11.26

100 kg

Sample price:US$11.26/kg.Request sample

Product profile

Customization

Available

Material

Organic Silicone

Application

Industrial

Model NO.

OTT-X720

Certification

ISO, FDA, DIY Art

Business Type

Factory Direct Sale

Hardness

20 Shore a

Mix Ratio

1:1

Color

Clear

Sample

Available

MOQ

200kg

Shelf Life

18 Months

Trade Term

EXW/CNF/CIF/Fob/DDU

Shipping

by Sea, by Air

Transport Package

Plywood Pallet

Specification

20kg, 25kg, 200kg

Trademark

OTT

Origin

Guangzhou

HS Code

3910000000

Production Capacity

600000

Key features

Medical Grade Safety: Hypo-allergenic, non-toxic, odorless, and resists bacterial growth for foot care products.

Customizable Viscosity: Viscosity adjustable from 1500 to 5000 mPa.s to meet specific mold making requirements.

Fast Response Service: Professional sales team offers 24-hour full-time service and fastest response times.

Free Sample Testing: Free samples available for client testing to ensure product suitability before bulk order.

Low Shrinkage Rate: Features almost nil shrinkage (0.1%) ensuring high precision in duplication and molding.

15 Years Expertise: Specialized manufacturer with 15 years experience in RTV2 silicone R&D and production.

Flexible Packaging: DIY service provides various package sizes and customized labels for different client needs.

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. Our silicone viscosity, hardness, and density vary based on the mold requirements to meet specific client requests.

Q:Do you offer free samples for testing?

Yes, we provide free samples for clients to test the product quality and suitability before placing an order.

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 to ensure standards are met.

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 effectively.

Q:How to get a silicone mold that lasts longer?

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