Ningbo Zhonggao Rubber & Plastic Manufacturing Co., Ltd. is one of the most reliable manufacturers and suppliers of neoprene sponge cord in China. The company has world-leading production equipment and strong manufacturing capabilities. Welcome to wholesale custom made neoprene sponge cord from our factory.
Material Properties
Wide temperature range and weather resistance
• Chloroprene rubber (CR) substrate can withstand extreme temperatures from -40°C to +120°C;
• UV resistance reaches ASTM G154 2000 hours without cracking;
• Suitable for outdoor buildings, ship decks and scenes with drastic temperature differences.
Closed-cell anti-permeability
• The closed-cell structure (water absorption rate ≤ 3%) is combined with the CR material's anti-ozone and salt spray resistance;
• It can resist the penetration of rain, oil mist and corrosive gases, and maintains sealing integrity after long-term compression.
High resilience and resistance to compression deformation
• Compression permanent deformation rate (70℃×22h) ≤15%, rebound rate ≥85%;
• Suitable for dynamic sealing scenarios such as doors, windows, hatches, etc. that are frequently opened and closed.
Flame retardant and safety certification
• The basic flame retardant grade reaches UL94 HF-1, and V-0 grade formula is optional;
• Passed EN 45545-2 rail transit fire protection standard;
• Suitable for high-speed rail, ships and power equipment.
Lightweight and energy-saving
• Density 0.4-0.9g/cm³ adjustable;
• Weight reduction of more than 50% compared to solid rubber, reducing building/equipment load;
• Porous structure can reduce thermal conductivity by 30%, improving energy efficiency.
Anti-aging and environmental protection
• Ozone aging resistance is 5 times better than ordinary rubber;
• Passed RoHS and REACH environmental certification, no halogen release;
• Suitable for edge sealing of medical and food-grade equipment.
Application Scenarios and Advantages
Architectural Curtain Wall
Closed-cell structure waterproof + UV resistant, suitable for unitized curtain wall joint temperature difference compensation.
01
Automobile Manufacturing
Oil-resistant and vibration-resistant, used for door seals, engine compartment shock pads and new energy battery compartment protection.
02
Ship Engineering
Salt spray and mildew-resistant, ensuring all-weather sealing of cabin doors, windows and deck joints.
03
Electronic Equipment
Antistatic formula (surface resistance 10^6-10^9Ω) for dustproof sealing of server cabinets.
04
Sports Equipment
High rebound characteristics suitable for shock-absorbing covers of fitness equipment and edge protection of diving equipment.
05
Customized Services
Material and performance upgrade
Basic CR sponge: general-purpose sealing and cushioning, density 0.5-0.8g/cm³, economical and efficient.
CR+silicone composite layer: temperature resistance increased to 150℃, used for high-temperature ovens and automobile exhaust pipe sealing.
Conductive/antistatic CR: surface resistance 10^3-10^12Ω adjustable, meeting the explosion-proof requirements of electronic clean workshops.
Structure and parameter customization
Cross-section design: Supports standard cross-sections such as round, D-shaped, square, etc., and can customize special-shaped sponge strips (such as wavy patterns, multi-lip structures).
Density and hardness: Density 0.3-1.2g/cm³, Shore hardness 20A-80A adjustable, adapted to different compression load requirements.
Size adaptation: Diameter 5-100mm, length continuous extrusion (≤50 meters/roll), supports adhesive backing, card slot or embedded installation.
Function Enhancement Options
Flame retardant enhancement: UL94 V-0 grade formula + smoke density level SDR≤15, used for rail transit and aviation equipment.
Antibacterial and mildew proof: Add nano silver ions, antibacterial rate ≥99%, suitable for medical cabins and cold chain logistics.
Color identification: Black/gray standard color, support fluorescent yellow warning strip or customized Pantone color number.
FAQ
Q: Which payment form you can accept?
A: T/T, Alibaba,Western Union, PayPal etc. We accept any convenient and swift payment term.
Q: Do you provide sample ? Is it free?
A: If the stock sample is low value, we will provide the free sample with freight collect. But for some high value samples, we need to collect the sample charge.
Q: Can we use our own logo?
A: Yes, we can print your private logo according to your request. But a letter of authorization is required.
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