Why does adding curing agent create many bubbles?

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

30A RTV-2 Silicone Rubber for Grc Mold Making Liquid Silicone Rubber

Name: 30A RTV-2 Silicone Rubber for Grc Mold Making Liquid Silicone Rubber
Brand: GUANGZHOU OTT NEW MATERIALS CO., LTD.
SKU: 2157990225

Guangdong, ChinaGUANGZHOU OTT NEW MATERIALS CO., LTD.

US$6.88

200 kg

Sample price:US$7.23/kg.Request sample

Product profile

Customization

Available

Material

Organic Silicone

Application

Medical, Industrial

Model NO.

OTT-S830

Certification

ISO, FDA

Hardness

30 Shorea

Mix Ratio

100:3

Curing Time

3-5h

Delivery Time

Within 7 Days

Shelf Life

12 Months

MOQ

1 Kg

Transport Package

Wood Pallet

Specification

1kg, 5kg, 20kg, 25kg, 200kg, 1000kg drum

Trademark

OTT Silicone

Origin

Guangzhou

HS Code

3910000000

Production Capacity

600000

Key features

Wide Application Range: Suitable for concrete, stone, gypsum, plaster, fiberglass, and resin casting.

Room Temperature Curing: Cures completely within 3-5 hours at 25 degrees Celsius.

High Duplication Capacity: Supports 50 to 1000 mold repetitions depending on product size.

Low Shrinkage Rate: Shrinkage is only 0.2% ensuring high precision in replicas.

Excellent Mechanical Strength: Features high tear strength and tensile strength for durability.

Long Shelf Life: Unopened package maintains quality for 18 months.

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

Professional R&D Support: Backed by a dedicated team of 2 engineers for product development.

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: ≤6.31h 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 rtv-2 silicone rubber, and silicone oil. Our silicone varies in viscosity, hardness, and density to meet specific client requests for different molds.

Q:Do you offer free samples?

Yes, we can provide samples for testing purposes.

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.

Q:How to remove bubbles during mold making?

After mixing 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 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.