Square Flexible Connectors | Custom Rectangular PU Expansion Joints

Leak-proof custom square flexible connectors and rectangular PU dust sleeves for industrial chutes, hoppers, and powder handling.

Square Flexible Connectors | Custom Rectangular PU Expansion Joints

SOSHH square and rectangular flange flexible polyurethane connector features, connection diagram, and material specification matrixSOSHH® Square & Rectangular Flange PU Flexible Connector Specs

Key Features

Optimized Rectangular Material Flow: Specifically engineered for square flanges and rectangular chutes. The smooth internal geometric transition effectively prevents bulk powder accumulation and material bridging in heavy gravity drop feeds.

  • 100% Fully Tailored Profiles: No standard mold limitations. We manufacture custom rectangular sleeves and transitional square-to-round shapes precisely matching your non-standard equipment dimensions.
  • Explosion Safety (ATEX Environment): Optional PUAS Anti-Static selection provides a certified surface resistance less than 10^8 Ohm, safely discharging static electricity in combustible flour, sugar, and organic dust zones.
  • Extreme Wear & Vibration Resistance: Features an high tensile rating up to 40 MPa to absorb severe mechanical oscillations from vibrating feeders and industrial shaker screens without tearing.
  • Technical Specs

    Material Option PU10 (Standard TPU): Thickness 1.0mm | Temp Range -20°C to +110°C | Tensile Strength 40 MPa | Surface Resistance 10^12 Ohm | Best for Pressure & Vacuum Resistant lines.

  • Material Option PUAS (Anti-Static PU): Thickness 1.0mm | Temp Range -20°C to +110°C | Tensile Strength 15 MPa | Surface Resistance less than 10^8 Ohm | Best for Flammable and explosive powders.
  • Material Option PUHT (Heat-Resistant): Thickness 1.0mm | Temp Range -20°C to +150°C | Tensile Strength 40 MPa | Surface Resistance 10^12 Ohm | Best for high-temperature powder discharges.
  • Material Option PURF (Fiber-Reinforced): Thickness 0.8mm | Temp Range -20°C to +110°C | Tensile Strength 300 MPa | Surface Resistance 10^12 Ohm | Best for high positive or negative pressure conditions.
  • Regulatory Compliance: Fully certified for safe food and pharmaceutical contact, fully compliant with FDA 21 CFR 177.2600 and EU 10/2011 protocols.
  • FeatureStandard TPUATEX Rated Antistatic PU (PUAS)Heat-ResistantFiber-Reinforced
    Thickness1.0 mm1.0 mm1.0 mm0.8 mm
    Temp-20°C to +110°C-20°C to +110°C-20°C to +150°C-20°C to +110°C
    Tensile40 MPa15 MPa40 MPa300 MPa
    Resistance10Ohm<10Ohm10Ohm10Ohm
    PerformancePressure & Vacuum ResistantPneumatic Conveying DesignHigh-TempFood Grade Flexible Hose Cert.

    Applications

    Vibrating Chutes, Feeders & Industrial Shakers

  • Rectangular Hopper Outlets & Drop Chute Transitions
  • Bulk Bag & FIBC Filling Stations
  • Custom Square-to-Round Transitional Pipe Retrofits
  • FAQ

    Q: Can SOSHH supply square/rectangular connectors as an alternative to S or B fitting gaps?

  • A: Yes. While traditional systems have size limitations for non-circular geometries, our factory specializes in premium square expertise. We provide fully customized square-to-square and square-to-round transitional flexible joints with faster delivery and no expensive tooling fees.
  • Q: Do you provide a certified anti-static version for hazardous chemical or flour handling?
  • A: Yes. For ATEX compliance, choose our PUAS Antistatic Polyurethane material. It guarantees a surface resistance less than 10^8 Ohm, completely preventing catastrophic dust explosions in bulk solids handling facilities.
  • SGS, CNAS, ilac-MRA, MA laboratory safety certificates for SOSHH square flexible connectors

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