Ningbo Zhonggao Rubber & Plastic Manufacturing Co., Ltd. is one of the most reliable manufacturers and suppliers of d section rubber buffers in China. The company has world-leading production equipment and strong manufacturing capabilities. Welcome to wholesale custom made d section rubber buffers from our factory.
Material Properties
Ultra-high load and impact resistance
• Natural rubber (NR) and high-hardness synthetic rubber compound formula;
• Shore hardness can be selected from 60A to 90A;
• Single-piece load capacity reaches 5-30 tons;
• Dynamic impact absorption rate ≥85%;
• The service life is 2-3 times longer than that of ordinary rubber pads.
Wide temperature range and fatigue resistance
• Applicable temperature range -50℃ to +120℃;
• Standard elastic modulus in extremely cold or high temperature environment;
• Permanent deformation rate ≤8% after 500,000 cycles of compression test.
Oil-resistant and chemical-resistant
• NBR oil-resistant coating or FKM chemical-resistant layer can be added to the surface;
• Resistant to corrosion by hydraulic oil, lubricating oil and weak acid and alkali media;
• Suitable for harsh environments such as mining machinery and chemical plants
Tear and wear resistance
• Multi-layer cord cloth reinforced structure, tear strength ≥ 25kN/m;
• Surface groove design disperses friction stress, and the wear rate under dynamic conditions is 60% lower than that of ordinary rubber;
Environmental and safety certification
• Complies with RoHS and REACH environmental standards;
• Optional food-grade silicone or halogen-free flame retardant formula (UL94 V-0);
• Meets the needs of medical equipment and fire safety scenarios;
Technical Parameters
|
Hardness (Shore A) |
Tensile Strength |
Elongation at Break |
Compression Set |
Material |
Operating Temperature |
Environmental Resistance |
Applications |
|
30–90 |
≥5 MPa (General) |
≥250% (Typical) |
≤35% (70°C × 24h) |
Nitrile Rubber (NBR) |
-40°C to 120°C |
Oil resistance, wear resistance |
Engines, hydraulic systems, and fuel tank areas |
|
Ethylene Propylene Diene Monomer (EPDM) |
-50°C to 150°C |
Water resistance, steam resistance, aging resistance |
Automotive doors & windows, building doors & windows, outdoor cabinets |
||||
|
Silicone Rubber (VMQ) |
-70°C to 220°C |
Excellent high & low temperature resistance, good biocompatibility |
Ovens, medical equipment, and battery pack systems |
Customized Services
Materials and performance customization
Basic material:
NR (natural rubber): high elasticity, low cost, suitable for general industrial scenarios.
NBR (nitrile rubber): oil-resistant and wear-resistant, suitable for hydraulic machinery and oily environments.
EPDM (ethylene propylene diene monomer): weather-resistant and anti-aging, used for outdoor equipment or wet conditions.
Composite materials:
NR+metal skeleton: built-in steel plate/wire mesh, the load-bearing capacity is increased to 50 tons.
EPDM+polyurethane coating: surface hardness reaches 95A, and the ability to resist extrusion deformation is doubled.
Conductive/antistatic rubber: surface resistance 10^3-10^6Ω, used for explosion-proof equipment and electronic workshops.
Structure and size customization
Cross-section optimization: Supports D-type, stepped D-type, and hollow D-type structures, and the curvature of the curved surface and the width of the base can be adjusted as needed.
Specifications: Height 20-300mm, diameter 50-1000mm, and multi-level stacked buffer systems can be designed.
Installation adaptation: Pre-embedded threaded inserts, dovetail grooves or magnetic bases, supporting bolt fixing or quick disassembly and assembly.
Function Enhancement Options
Flame Retardant Modification: Passed UL94 V-0, EN45545-2 fireproof certification, used in rail transit and power equipment.
Color Identification: Black/Yellow/Red standard colors, support fluorescent bar warning or laser engraving load level identification.
Complex Function: Integrated temperature sensor chip or vibration monitoring module to achieve intelligent buffer status monitoring.
FAQ
Q: When can I get the quotation?
A: We usually quote within 8-24 hours after we get your inquiry. If you are very urgent to get the price, please tell us so that we will regard your inquiry priority.
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 machines you have in your factory?
A: There are Feeding machine,Strip cutting machine,Rubber vulcanizer, edge flanging machine ,Automatic full inspection machine and etc.
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