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Help CenterSquare Rubber Soft Joint With Bolt Holes for Dust Collection & Air Handling Unit
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As a leading manufacturer based in Cangzhou, Hebei, China, Hebei Speed Torque Transmission Technology Co., Ltd. proudly presents our Square Rubber Soft Joint with Bolt Holes — a premium flexible connector specifically engineered for dust collection systems and air handling units. With over 7 years of experience (since 2017), a factory spanning 3,000–5,000 m², and an annual export value exceeding US$5 million, we combine advanced production capabilities with rigorous quality control. This product is designed to absorb vibration, reduce noise, and accommodate thermal expansion or misalignment in ductwork, ensuring long-term system reliability and efficiency.
Our square rubber soft joint features precision-drilled bolt holes for easy flanged connection, making installation straightforward and secure. The high-grade rubber compound resists abrasion, ozone, and chemicals commonly found in industrial air handling environments. Available in customizable sizes, this joint serves as a vital component for HVAC, dust collection, pneumatic conveying, and exhaust systems.
Key Features & Specifications
Material Excellence: Manufactured from high-quality EPDM or Neoprene rubber, offering excellent resistance to heat, ozone, and weathering. Optional materials like silicone or NBR are available on request.
Robust Construction: Multi-layer fabric reinforcement provides high tensile strength and pressure rating, while maintaining flexibility for dynamic movements.
Bolt Hole Design: Pre-punched bolt holes match standard flanges (ANSI, DIN, JIS or custom), ensuring a tight, leak-proof seal without additional drilling.
Vibration Damping: Effectively isolates mechanical vibrations from fans, blowers, and compressors, reducing stress on connected equipment and ductwork.
Temperature Tolerance: Standard operating range from -20°C to +120°C; high-temperature variants are available for up to +260°C.
Custom Dimensions: We offer tailor-made sizes – square, rectangular, or round – with various thicknesses and number of bolt holes to suit specific system requirements.
Easy Maintenance: Flexible design allows visual inspection of internal condition; can be replaced quickly without dismantling adjacent piping.
| Parameter | Value |
|---|---|
| Shape | Square with bolt holes |
| Material Options | EPDM, Neoprene, Silicone, NBR |
| Working Pressure | 0.2 – 1.0 MPa (customizable) |
| Temperature Range | -20°C to +120°C (std) / up to +260°C (special) |
| Standard Flange Compatibility | ANSI, DIN, JIS (custom available) |
| Bolt Hole Count | 4, 8, 12, 16 or as per drawing |
| Size Range (inner square) | 100x100 mm to 1000x1000 mm (custom) |
| Certification | ISO9001:2015 |
Our rubber soft joints are tested for leakage and pressure endurance before shipment. The inner smooth bore minimizes turbulence and pressure drop, while the reinforced carcass prevents ballooning under pressure. For dust collection systems, the joint effectively absorbs duct movement caused by temperature changes or equipment vibration, preventing cracks in rigid connections.
Advantages in Air Handling Units (AHU):
Reduces noise transmission from fans to ductwork.
Compensates for minor misalignment during installation.
Extends service life of connected equipment by isolating vibration.
Prevents air leakage with strong flanged seal.
Lightweight and easy to handle during installation.
Why Choose Hebei Speed Torque?
Established in 2017, we employ a dedicated team of 101–200 professionals operating from a modern factory of 3,000–5,000 m². Our annual export value of US$5–10 million reflects strong global demand — we serve markets across North America, South America, Europe, Southeast Asia, Africa, Oceania, and the Middle East. We ship from major Chinese ports including Shanghai, Tianjin, and Qingdao, ensuring timely delivery. Our ISO9001 certification guarantees strict quality management from raw material procurement to final inspection. With a track record of reliable supply and customized solutions, we invite you to experience the performance of our Square Rubber Soft Joint. Contact us today for a quote or technical consultation — let us help optimize your air handling or dust collection system.
Frequently Asked Questions (FAQ)
Q1: What materials are used to make this rubber joint?
A: We primarily use high-grade EPDM or Neoprene rubber. For special applications (high temperature, oil resistance), we can use silicone or NBR. Please specify your requirement.
Q2: Can I get custom sizes or bolt hole patterns?
A: Absolutely. We offer fully customized dimensions, square or rectangular, with any bolt hole count and spacing based on your drawing or sample.
Q3: What is the maximum working temperature and pressure?
A: Standard products handle up to 120°C and 1.0 MPa. For higher temperatures (up to 260°C) or pressures, we can design special reinforcement. Contact us for details.
Q4: Is the product suitable for outdoor use?
A: Yes, EPDM rubber offers excellent UV and ozone resistance, making it ideal for outdoor air handling units. Neoprene also provides good weather resistance.
Q5: How do you ensure the joint is leak-proof?
A: Each joint undergoes 100% hydrostatic pressure test and visual inspection before packing. The flanges with bolt holes provide a secure seal when mated with standard duct flanges.
Q6: What is the lead time for manufacturing?
A: Standard sizes (200x200 mm to 600x600 mm) are typically shipped within 7-15 days after order. Customized products require 15-25 days, depending on complexity.
Q7: Can I get a sample before bulk order?
A: Yes, we provide samples for evaluation. Sample cost is negotiable, and it will be deducted from your first bulk order.
Q8: Which ports do you ship from?
A: We mainly ship from Shanghai, Tianjin, and Qingdao ports. Delivery terms: FOB, CIF, CFR, etc. We can arrange shipping to any major port worldwide.
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