Ningbo Zhonggao Rubber & Plastic Manufacturing Co., Ltd. is one of the most reliable manufacturers and suppliers of silicone sealing strip in China. The company has world-leading production equipment and strong manufacturing capabilities. Welcome to wholesale custom made silicone sealing strip from our factory.
Material Properties
Extreme temperature resistance and wide temperature adaptability
• Silicone rubber (VMQ) can work stably for a long time at extreme temperatures from -70℃ to +250℃;
• It is resistant to high temperatures without softening and resistant to low temperatures without cracking;
• It is suitable for automobile engine compartments, doors and windows of northern buildings, and high-temperature industrial equipment.
Low friction and high resilience
• The surface friction coefficient is as low as 0.1-0.2, and the dynamic friction resistance is reduced by 40%-50%;
• The rebound rate is ≥95%, and it is not easy to produce permanent deformation after long-term compression, ensuring that the seal is long-lasting and effective.
Chemical resistance and biocompatibility
• Silicone rubber has a stable molecular structure, is resistant to ozone, ultraviolet rays, acids, alkalis and most organic solvents, and is non-toxic and odorless;
• It complies with FDA food contact grade and ISO 10993 biocompatibility standards;
• It is suitable for medical equipment, food processing equipment and pharmaceutical industries.
Sealing and tear resistance
• The cross-section design optimizes the sealing contact surface, forming a uniform pressure distribution, and the sealing performance is 30% higher than that of traditional rubber;
• The tear resistance strength reaches 20-30 kN/m, and the wear life under dynamic conditions is extended by 2-3 times.
Environmental protection and easy processing
• Halogen-free, heavy metal-free, compliant with RoHS and REACH environmental standards;
• Can be hot-pressed, cut or bonded, suitable for complex cross-sections and large-scale production needs.
Sound insulation, heat insulation and anti-aging
• The porous structure effectively blocks noise and heat transfer, and the thermal conductivity is as low as 0.2 W/m·K;
• Excellent anti-ultraviolet aging performance;
• Outdoor service life of more than 10 years.
Customized Services
Materials and Performance
Standard silicone rubber (VMQ): general purpose, suitable for door and window sealing, home appliance buffering.
Food grade silicone rubber: FDA certified, non-toxic and high temperature resistant, used for food processing equipment and packaging machinery.
Medical grade silicone rubber: excellent biocompatibility, used for sealing ventilators, medical instruments and surgical instruments.
Flame retardant silicone rubber: UL94 V-0 certified, flame spread rate ≤40 mm/min, suitable for electronic equipment and building fireproof sealing.
Conductive silicone 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 interfaces or space restrictions.
Color and logo: Transparent, black, white and customized colors (such as light blue for medical equipment) are available, and laser engraving or barcode logos are supported.
Functional 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 acoustic testing, TS16949 certification) to ensure compliance and safety.
FAQ
Q: How can I get a sample to check your quality?
A: After price confirmation, you can require for samples to check our quality. If you need the samples, we would like to send sample from our Chinese factory.
Q: What's your after-sale service?
A: Our quality warranty period is one year. Any quality problem will be solved to customer satisfactions.
Q: Do you have the test and audit service?
A: Yes, we can assist to get the designated test report for product and the designated factory audit report.
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