Ningbo Zhonggao Rubber & Plastic Manufacturing Co., Ltd. is one of the most reliable manufacturers and suppliers of extruded rubber door seals in China. The company has world-leading production equipment and strong manufacturing capabilities. Welcome to wholesale custom made extruded rubber door seals from our factory.
Material Properties
Wide temperature adaptability
• Made of EPDM or silicone rubber;
• Can work stably for a long time in extreme temperatures from -40℃ to +120℃;
• Resistant to UV rays, ozone and acid rain erosion;
• Outdoor service life of more than 10 years;
• Suitable for severe cold or tropical climates.
Low friction and high resilience
• The surface friction coefficient is as low as 0.1-0.2;
• The dynamic friction resistance is reduced by 40%-50%;
• The rebound rate is ≥90%;
• It is not easy to produce permanent deformation after long-term compression, ensuring long-lasting and effective sealing.
Waterproof, dustproof and soundproof performance
• The cross-section design of the sealing strip forms multiple sealing lines;
• The waterproof level can reach IP67;
• At the same time, the porous structure effectively blocks the transmission of noise;
• The sound insulation effect is improved by 20-30 decibels;
• It is suitable for scenes that require silent sealing, such as door bodies and cold storage doors.
Tear and wear resistance
• The material has a tear resistance of 20-30 kN/m;
• The wear rate under dynamic conditions is only 1/3 of that of ordinary rubber;
• The service life is 2-3 times longer than that of traditional sealing strips;
• Especially suitable for car doors or industrial equipment that are frequently opened and closed.
Environmental protection and easy processing
• Halogen-free and heavy metal-free;
• Comply with RoHS and REACH environmental standards;
• Can be hot-pressed, cut or bonded;
• Suitable for complex cross-sections and large-scale production needs.
Chemical corrosion and aging resistance
• Strong resistance to acids, alkalis, oils and most organic solvents;
• EPDM material is water-resistant and steam-resistant, and silicone rubber is resistant to high temperature and humidity;
• It still maintains elasticity and sealing performance after long-term use.
Customized Services
We can customize materials, structures and functions according to working conditions to meet diverse scenarios:
Materials and performance enhancements
EPDM rubber: water-resistant, steam-resistant, and aging-resistant, suitable for humid environments or cold storage door seals.
Silicone rubber (VMQ): resistant to extreme temperatures (-70°C to 250°C), good biocompatibility, used in medical clean rooms or door frames of northern buildings.
Fluororubber (FKM): resistant to high temperatures (-20°C to 320°C), resistant to chemical corrosion, suitable for industrial equipment or chemical plants.
Flame-retardant rubber: UL94 V-0 certified, flame spread rate ≤40 mm/min, used for rail transit or building fireproof sealing.
Conductive rubber: embedded with conductive fillers, used in electromagnetic shielding or anti-static scenarios.
Other customization options
Cross-section and size: Rectangular, L-shaped, corrugated and other cross-sections can be customized, and thickness, length and width can be adjusted as needed to meet special door frames or space requirements.
Color and logo: Available in black, white, transparent and customized colors (such as light gray for architectural decoration), supporting laser engraving or barcode logo.
Function enhancement: Surface coating (such as PET/PE) improves wear resistance, or pre-coated adhesive layer enables nail-free installation.
Certification and testing: Verified according to industry standards (such as ISO 9001) to ensure compliance and safety.
FAQ
Q: How your quality guarantee?
A: We have 100% quality guarantee to customers. We will be responsible for any quality problem.
Q: Can I request to change the form of packaging and transportation?
A: Yes, We can change the form of the packaging and transportation according to your request, but you have to bear their own costs incurred during this period and the spreads.
Q: Can you provide drawings and technical data?
A: Yes, our professional technical department will design and provide drawings and techical data.
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