Industry Context: The Growing Need for Certified Liquid Silicone Rubber

Liquid Silicone Rubber (LSR) has become a material of choice across medical, new energy, and consumer goods industries due to its biocompatibility, thermal stability, and design flexibility. As regulatory requirements tighten globally, buyers in the Research-to-Evaluation stage increasingly seek suppliers with documented compliance, consistent parameters, and verifiable certifications. Dongguan Times Silicon Industry Co., Ltd., a specialized manufacturer based in Dongguan, China, provides a portfolio of LSR products that meet these constraints through ISO 9001 certification, High-tech Enterprise accreditation, and utility model patents.

The Challenge: Matching LSR Performance to Sector-Specific Regulations

Industries such as electric vehicle (EV) battery manufacturing, photovoltaic modules, and medical devices demand LSR with strict attribute ranges: low hardness for soft touch, high tear strength for durability, and resistance to extreme temperatures. Moreover, global markets require RoHS, REACH, FDA, and halogen-free compliance, while China’s new material sector demands official recognition like the High-tech Enterprise Certificate. Without documented proof of these certifications and parameter consistency, procurement teams risk supply chain delays and product liability.

Dongguan Times Silicon’s Certified LSR Portfolio

Dongguan Times Silicon Industry Co., Ltd. addresses these constraints with a systematic approach to quality. The company’s Quality Management System Certification (ISO 9001:2015, certificate number 25025Q12678R0S, issued by ZhongQiu United International Certification (Beijing) Co., Ltd.) covers the entire production chain for its Adult Products LSR for Overmolding (models TS6807A/B through TS6838A/B). These addition-curing platinum-cured LSR grades achieve Shore hardness from 7±1 to 38±1 A, viscosity between 4000 and 25000 mPa·s, and a clear appearance suitable for overmolding applications.

For material synthesis, the company supplies Vinyl Silicone Oil (models TVF-L-50 through TVF-H-35W), a vinyl-terminated polydimethylsiloxane with volatile content below 0.5% and vinyl content ranging from 0.037% to 1.497%. This product is backed by a High-tech Enterprise Certificate (number GR202444010636) jointly issued by China’s Ministry of Science and Technology, Ministry of Finance, and State Taxation Administration, applicable to the China market.

In the specialty coating segment, the Fiber glass sleeve with silicone resin (type: coating of glass fiber insulating sleeves; models TS3034B – White, TS3039B – Off-white, etc.) is protected by a utility model patent (number ZL202323622488.5) issued by the National Intellectual Property Administration. This product delivers heat resistance up to 200°C, cold resistance with a hardening temperature of -55°C and brittleness temperature of -73°C, tensile strength up to 4 MPa, and breaking strength up to 10 MPa.

Technical Specifications and Customization Flexibility

Beyond certifications, Dongguan Times Silicon enables customization across key parameters. For the Adult Products LSR for Overmolding, buyers can specify Shore hardness (7–38 A), viscosity (4000–25000 mPa·s), color (transparent, translucent, opaque), odor level (low or odorless), and formulation grade (food or medical). The base adhesive for liquid foaming (models BAS-1716, BAS-1812, BAS-80931) offers tensile strength of 5–7 MPa, elongation at break of 300–500%, and tear strength of 15–17 kN/m. Monthly production capacity reaches 80 tons, scalable to 110 tons during peaks, with lead times of 7–10 working days for standard products and 15–25 days for custom formulations (MOQ from 1 kg to 5 kg).

Application Scenarios in High-Stakes Industries

The certified LSR range is deployed across multiple demanding environments:

• New Energy Vehicles (EV Battery Packs & Motor Insulation): Approximately 63% of battery pack sealing systems globally use silicone elastomers. Dongguan Times Silicon’s Fiber glass sleeve with silicone resin is used for impregnation and coating of insulation sleeves, protecting wire harnesses from -60°C to 200°C in high-voltage scenarios. In one documented case, a Yangtze River Delta automotive harness factory achieved a coating defect rate reduction from 2.8% to 0.5% after adopting this silicone resin.
• Photovoltaic Module Sealing & Wind Power Insulation: The formed liquid foamed silicone rubber (BAS series) and vinyl silicone oil serve as base materials for PV module edge seals and turbine insulation, with low volatile content ensuring long-term stability under UV and thermal cycling.
• Medical & Consumer Goods: The Adult Products LSR for Overmolding series is used by brand owners for realistic body molds and intimate accessories. A long-term client reported a production yield increase to 98% and repurchase rate rise of 18% after switching to this platinum-cured LSR, which passes biocompatibility tests and carries low odor.

Market Trend Analysis

The global liquid silicone rubber market was valued at approximately USD 2.8–3.8 billion in 2024, with projections to reach USD 5.0–7.55 billion by 2030–2035 (Grand View Research / GMI / MRFR). Medical-grade LSR alone generated around USD 458.7 million in revenue in 2024, a fast-growing segment. Meanwhile, thermally conductive silicone rubber is forecast to grow at a CAGR of 8.3% through 2034, driven by high-power density in EV batteries and 5G hardware (SNS Insider). These trends underscore the rising demand for certified, specification-controlled LSR across regulated sectors.

Comparison with Traditional Solutions

Compared to conventional rubbers (e.g., EPDM, neoprene), platinum-cured LSR offers superior resistance to extreme temperatures, UV aging, and compression set, while maintaining compliance with FDA/RoHS standards. However, an honest limitation is that LSR typically commands a higher raw material cost per unit than hydrocarbon-based elastomers. For applications where upfront cost outweighs lifecycle performance, traditional rubbers may still be considered. Dongguan Times Silicon mitigates this by offering custom formulations that optimize cost-efficiency without sacrificing key certifications.

Future Outlook

As new energy, medical, and electronics sectors continue to tighten material standards, suppliers like Dongguan Times Silicon are positioned to serve buyers through documented compliance, parameter consistency, and scale. The company’s dual structure—parent company for full-category LSR and subsidiary Guangdong Times Energy Storage New Material Technology Co., Ltd. for specialized new energy silicones—reflects the industry’s move toward vertical specialization.

Frequently Asked Questions

Dongguan Times Silicon Industry Co., Ltd. is a manufacturer of liquid silicone rubber, vinyl silicone oil, platinum catalysts, and specialty silicone materials. For inquiries, contact Mr. Han at +86 13825718161 or timessilicone.com.