Materials

Precision rubber products solutions manufacturer

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Core Materials

SIR

Silicone：

Features: high-temperature aging resistance, food/medical- grade safety certification, excellent electrical insulation.

Applications: maternal & infant products, medical tubes, kitchen and cookware seals, electronic device keypads.

NBR

Nitrile Rubber

Features: excellent oil and solvent resistance, abrasion and tear resistance, good low-temperature performance.

Applications: automotive engine oil seals, fuel line seals, O-rings for industrial hydraulic systems.

EPDM Ethylene

Propylene Rubber

Features: excellent weather and

ozone resistance, acid/alkali corrosion resistance, good electrical insulation

Applications: curtain wall sealing strips, automotive cooling system hoses, photovoltaic module seals.

FKM

Fluoro Rubber

Features: high-temperature resistance (250°C+), strong chemical corrosion resistance, extremely low gas permeability

Applications: aerospace engine seals, chemical reactor linings, high-end automotive oil seals.

Chloroprene Rubber

Features: self-extinguishing flame retardancy, weather and aging resistance, excellent physical-mechanical properties.

Applications: wire and cable sheaths, bridge engineering damping bearings, industrial conveyor belts.

Natural Rubber

Features: extremely high elasticity and tensile strength, good cold resistance and electrical insulation.

Applications: all-steel truck tires, industrial shock absorbers, rubber shoes and latex products.

LSR Liquid

Silicone Rubber

Features: high transparency, high tear strength, enabling automated precision injection molding.

Applications: medical-grade tubes, baby pacifiers, liquid silicone masks, precision instrument seals.

AEM Ethylene

Acrylic Rubber

Features: resistance to hot oil, ozone and coolant, excellent low-temperature elasticity, low compression set.

Applications: automotive engine compartment seals, turbocharger hoses, cooling system sealing rings.

HNBR Hydrogenated Nitrile Rubber

Features: excellent oil resistance, heat aging resistance, ozone resistance, high tensile strength, low compression set.

Applications: automotive engine seals, air conditioning system seals, industrial hydraulic seals, oilfield equipment.

BIIR

Bromobutyl Rubber

Features: extremely low gas permeability, heat and ozone resistance, chemical corrosion resistance, excellent damping performance.

Applications: automotive tire inner tubes, pharmaceutical stoppers, seals, damping products.

Core Materials / SIR (Silicone) Silicone Rubber

Optimized Formulation (Modification)

Antibacterial formula, anti-conductive pads

Problems Solved

During use of electric toothbrushes, acidic liquids cause corrosion and mold (mold resistance rating 0/1); prevents electrical conductivity.

Formulation Approach

SIR is chemically inert and hydrophobic, easily adsorbing bacteria to form biofilms. Through bulk filling modification, antibacterial fillers are directly mixed into the silicone matrix, mainly in inorganic antibacterial systems and organosilicon-bonded organic antibacterial systems.

The bulk filling process involves minimal change and covers both surface and bulk antibacterial properties; antibacterial capability is retained even after wear, and tests show an antibacterial rating up to 0/1.

Representative products: Electronic component covers, Keypads, Plugs, Protective sleeves, Food-contact materials for the medical industry, Hose products

Core Materials / EPDM

Optimized Formulation (Modification)

Antibacterial formula, anti-conductive pads

Problems Solved

During use, the product shows poor compression set and fails to rebound; is dissolved and corroded by oils; hardens and fails under long-term high-temperature use.

Formulation Approach

High-structure carbon black N330/N220 filling

Representative products: outdoor dust seals, rubber bellows, flame-retardant gaskets, adhesive substrates, foam cushioning pads, low-pressure refrigerant seals, marine salt-spray-resistant products

Core Materials / CR Neoprene

Optimized Formulation (Modification)

Improved tensile, tear and abrasion resistance with increased heat build-up;

Balanced elasticity and compression set, low heat build-up, preferred for damping seals

Problems Solved

While ensuring sealing performance, it enhances physical tensile, tear and abrasion resistance, extending part service life.

Formulation Approach

High-structure carbon black N330/N220 filling

Representative products: Outdoor dust seals, Rubber bellows, Flame-retardant gaskets, Adhesive substrates, Foam cushioning pads, Low-pressure refrigerant seals, Marine salt-spray-resistant products

Core Materials / LSR

Optimized Formulation (Modification)

Reduced volatiles, improved odor (automotive interior VDA 270), coating layer

Problems Solved

Solves the odor release inherent to silicone, prevents dust attraction on part surfaces, and provides long-lasting antibacterial properties.

Formulation Approach

Water boiling, low-temperature baking, UV treatment, platinum-compatible antibacterial masterbatch. Post-processing reduces volatiles and improves the odor rating; surface coating solves dust attraction; the platinum catalytic system compatible with antibacterial masterbatch achieves long-lasting antibacterial effect.

Representative products: food seals, baby products, food seals, medical conduits, wearable accessories, headlamp seals, home appliances, waterproof rings for consumer electronics

Core Materials / NBR

Optimized Formulation (Modification)

NBR/HNBR blending modification, peroxide vulcanization system, high-structure carbon black reinforcement

Problems Solved

Improves abrasion resistance for dynamic friction and continuous sliding seals, enhances heat aging and ozone resistance, and optimizes compression set.

Formulation Approach

By adjusting the NBR+HNBR blend ratio and using a peroxide vulcanization system, two-phase compatibility is improved, with high-structure carbon black for reinforcement. NBR softens and wears easily at high temperatures, while HNBR suppresses thermal degradation; their synergy improves abrasion resistance while also enhancing heat aging resistance, ozone resistance and compression set

Representative products: industrial hydraulic seals

Core Materials / FKM

Optimized Formulation (Modification)

Low-temperature FKM raw rubber selection, alcohol-resistant FKM grades, peroxide vulcanization system

Problems Solved

Improves the embrittlement caused by long-term use in low-temperature environments; enhances resistance to methanol/ethanol fuels; optimizes compression set.

Formulation Approach

Without relying on plasticizers, control the total filler loading and select low-temperature FKM raw rubber; choose alcohol-resistant FKM (low-VDF-content grades) to reduce plasticizer ratio; select low-Mooney-viscosity FKM and high-molecular-weight high-Mooney grades to ease mixing; use peroxide vulcanization and reduce silica addition.

Representative products: high-end automotive oil seals

Core Materials / NR

Optimized Formulation (Modification)

NR/EPDM blending modification, EV efficient vulcanization system, compound antioxidants

Problems Solved

Improves weather resistance in harsh environments; enhances heat resistance and reduces compression set.

Formulation Approach

By adding a small amount of EPDM, antioxidants and anti-ozone wax, weather and ozone resistance are improved; the EV efficient vulcanization system combined with compound antioxidants enhances heat resistance and reduces compression set. NR itself has extremely high elasticity and tensile strength; modification retains its original advantages while expanding application fields.

Representative products: damping pads, toy tires

Core Materials / AEM

Optimized Formulation (Modification)

Improved hydrolysis resistance (hot coolant, hot-humid conditions), enhanced long-term heat aging resistance

Problems Solved

Solves seal leakage problems in hot, humid environments, extends product service life, and meets the long-term reliability requirements of automotive engine compartments and cooling systems.

Formulation Approach

AEM ethylene acrylic rubber itself offers resistance to hot oil, ozone and coolant, excellent low-temperature elasticity and low compression set. By optimizing the vulcanization and antioxidant systems, hydrolysis resistance is further improved and long-term heat aging resistance in hot, humid environments is enhanced, meeting the demanding working condition requirements of automotive engine compartments, turbocharger hoses and cooling systems.

Representative products: automotive crankshaft oil seals, coolant hoses

Core Materials / HNBR

Optimized Formulation (Modification)

Reduces high-temperature compression set

Improves heat aging resistance

Reduces cost

Problems Solved

Improves part sealing performance and service life in extreme environments

Formulation Approach

Peroxide + TAIC; silica + silane; full post-curing;

High-saturation HNBR, compound antioxidants, filler surface coupling modification

HNBR+NBR blending

Representative products: automotive crankshaft oil seals, coolant hoses, automotive high-temperature oil seals, timing belts, fuel lines, air-conditioning compressor seals, oilfield packers, rubber barrels, heavy-duty seals for construction machinery, rubber rollers, aviation hydraulic seals.

Core Materials / BIIR

Optimized Formulation (Modification)

Solves slow curing and poor adhesion of pure IIR

Problems Solved

Improves air tightness

Formulation Approach

BIIR + regular IIR butyl (the higher the IIR ratio, the slower the curing speed and the lower the interlayer adhesion; suitable for tire inner liners, vacuum gaskets, etc.)

Representative products: steam diaphragms, curing bladders, damping and sound-insulating parts, vacuum seals, water vapor barrier gaskets

Quality Control

Authoritative System Certification

Certified to ISO 9001 quality management system, IATF 16949 automotive technical specification, establishing a standardized, systematic production management closed loop to align management effectiveness with international standards.
From incoming raw material inspection and in-process control to finished product testing, every step follows strict quality standards and operating procedures to ensure stable and reliable product quality.

Global Compliance Access

All products comply with RoHS, REACH, UL, FDA, LFGB and other strict international standards. From material selection to finished products, every link meets the environmental and safety access requirements of major global markets — quality knows no borders.
According to the requirements of customers' export destinations, corresponding compliance test reports and certificates can be provided to help customer products enter global markets smoothly.

R&D Innovation

Rubber Compound Technology

Independently developing proprietary rubber compound systems, precisely formulating raw rubber, curing agents and reinforcement systems to create high-performance elastomers suited to various working conditions, providing the core quality foundation for products.
With a professional compound R&D team and complete experimental equipment, customized compound development can be carried out according to customers' special needs to meet application requirements across industries and working conditions.

Sealing System Design

Based on fluid dynamics and structural mechanics simulation, highly adaptable sealing structures are designed, with custom solutions for extreme conditions such as high/low temperature and high pressure, ensuring long-term stability of sealing systems.
From product structure design, mold development to molding process optimization, we provide one-stop sealing solutions to help customers solve technical problems such as seal failure and leakage, improving product reliability.

Solutions

Leveraging advanced material formulations and precision manufacturing processes, we provide high-performance, customized rubber product solutions for various industries. Products are widely used in core scenarios such as sealing, damping and insulation, strictly following international standards and empowering innovation and quality upgrades across industries with excellent quality.

Automotive Manufacturing

Covering fuel and new energy vehicles, providing highly reliable sealing, damping and sound insulation components to ensure driving safety and comfort.
Core products: engine seals, battery pack seals, shock absorber dust covers, cooling system hoses, interior sound insulation parts.

Electronic & Communication Equipment

Precision waterproof rings and silicone keypads for terminals such as phones and POS machines, enhancing dust/water protection and tactile operation experience.
Core products: waterproof seals, silicone keypads, damping foam, insulating gaskets, connector seals.

Industrial Machinery & Equipment

For general machinery, construction machinery and hydraulic equipment, providing sealing, dust-proof and wear-resistant parts to cope with oil, dust and high/low temperature conditions.
Core products: hydraulic seals, dust seals, wear-resistant bushings, damping pads, conveyor belts.

Problems

Parting-line cracks / cracking (primary defect), stress concentration around holes, risk of fine cracks in inner holes, short molding (incomplete fill, local material shortage)

Solution: Core-Pulling Mold Molding

Core Principle

A precision core-pulling mechanism is added inside the mold to directly mold a complete inner hole via the vulcanization hot-pressing process, keeping the hole completely away from the product's parting line.

This eliminates cracking risks caused by parting-line misalignment, flash or stress concentration at the root of structural design, achieving integrated molding of the inner hole with the product body without subsequent machining intervention.

Actual product size

25.8x front hole view

25.8x back hole view

solution

Abrasion Resistance Testing

In response to the customer's abrasion resistance requirements, a dedicated technical research project was carried out. Through multiple rounds of compound design and systematic process tuning, the project team conducted in-depth experiments on key aspects such as material composition, ratio optimization and molding processes, ultimately establishing an optimized solution with excellent abrasion resistance.

As verified by testing, the abrasion resistance of products made with this solution was measured by DIN abrasion testing per GB/T 9867-2008, with an actual result of 59.2 mm³, far superior to conventional indicators, demonstrating excellent wear resistance.

Customer Life Test Results (120H Water Spray Test)

Successfully completed the customer-organized assembly life test and water spray test, with all performance indicators meeting the customer's technical requirements and usage standards.

After 120 hours of continuous water spray testing, the products maintained intact sealing performance with no leakage, and no obvious aging or deformation on appearance, fully verifying long-term reliability and stability under complex working conditions.

solution

Material Formulation & Anti-Mold Performance

After screening multiple anti-mold additives and combining matrix material compatibility with molding process characteristics, multiple rounds of formulation optimization and anti-mold validation were carried out. Through repeated testing and comparative analysis, a new material solution balancing good processing performance and efficient anti-mold function was successfully developed.

To verify the anti-mold effect, we commissioned a third-party testing organization to conduct strict testing per GB 21551.2-2010. Results confirmed the anti-mold performance fully meets the standard, effectively addressing the mold concerns of the customer.

This solution can be widely applied to rubber seals and silicone products in humid environments such as home appliances, sanitary ware and kitchenware, providing more hygienic and safer product solutions.

solution

Problems

The original product's parting line (mold seam) lies on the sealing contact surface.

Silicone mold closing produces a fine flash/gap; when the parting line happens to lie on the sealing compression surface of the cable or housing, rainwater penetrates through the fine gap along the parting line, causing water leakage and failure of the charging plug.

Solution: Relocating the Parting Line

By optimizing the mold design and relocating the parting line to a non-sealing-contact surface area, leakage risks caused by the parting line are eliminated at the root, ensuring the sealing reliability of the charging plug under various weather conditions.

Partners

Partnering with World-Renowned Brands

We are honored to have established long-term, stable partnerships with many world-renowned brands, with a customer network spanning key economic regions such as Europe, North America and Asia. Backed by excellent product quality and customized services, our solutions have been successfully applied in the core business scenarios of multiple Fortune 500 companies.

European Market · Deep Presence

Covering 20+ countries including Germany, France and the UK, with strategic cooperation with leading companies in automotive manufacturing and precision machinery, supporting Europe's Industry 4.0 intelligent upgrade and transformation with solid technology.

Strictly following EU environmental standards and quality certification systems, products pass multiple international certifications such as RoHS and REACH, providing European customers with high-quality products that meet local regulatory requirements.

North American Market · Steady Expansion

Serving North American markets such as the US and Canada, we have established deep cooperation with customers in automotive parts, consumer electronics and medical devices, earning customer recognition through stable quality and fast response.

Products comply with North American safety standards such as FDA and UL, and complete compliance test reports can be provided to help customer products enter the North American market smoothly.