Why PUAS Antistatic Flexible Connectors are Non-Negotiable for ATEX Zones
This is where the SOSHH PUAS (Antistatic Polyurethane) series sets a new safety benchmark.
1. Permanent Conductivity: < 10^9 Ω Surface Resistivity
Most "antistatic" connectors on the market use surface coatings that wear off after a few cleaning cycles. PUAS is different. * Molecular Integration: The antistatic agents are integrated into the TPU molecular structure.
- The Data: With a verified surface resistivity of $< 10^9 \Omega$, PUAS ensures that static charges generated by friction during powder flow are instantly dissipated to the ground.
- Compliance: Fully meets ATEX Directive 2014/34/EU requirements for Zones 20, 21, and 22.
2. Exceptional Fatigue Life for Vibrating Sifters
Antistatic materials are often brittle, but PUAS breaks this mold. In high-frequency vibrating sifters, flexibility is the key to preventing "rim-cracking."
- 600% Elongation: Our PUAS material maintains an Elongation at Break of 600%, allowing it to absorb intense mechanical oscillations without developing pinhole leaks.
- 90A/85A Shore Hardness: This precise hardness balance provides the structural integrity needed to withstand vacuum and pressure pulses while remaining ultra-flexible.
3. Abrasion Resistance: Reducing Total Cost of Ownership (TCO)
In abrasive powder conveying (like sugar, salt, or active granules), connector wear leads to batch contamination and frequent downtime.
- 39.0 mg Abrasion Loss: According to ISO 4649 standards, PUAS loses only 39.0 mg of material under extreme friction.
- 3x Longevity: Compared to standard rubber, PUAS lasts 3 to 5 times longer, significantly reducing maintenance costs and preventing "black speck" contamination in your product stream.
| Feature | SOSHH PUAS | Standard Silicone |
|---|---|---|
| Surface Resistivity | $< 10^9 \Omega$ (Permanent) | Insulative (> $10^{12} \Omega$) |
| Abrasion Loss | 39.0 mg | > 150 mg |
| Elongation at Break | 600% | 300% - 400% |
| ATEX Rated | Yes (Zones 20, 21, 22) | No |
4. Certified for Food & Pharma (FDA & EU)
Safety isn't just about explosions; it’s about hygiene. PUAS is engineered for sensitive environments:
- FDA 21 CFR 177.2600 Compliant
- EU 10/2011 & EC 1935/2004 Certified
- Mirror-Smooth Bore: The non-porous internal surface prevents powder hang-up and biofilm formation, making CIP (Clean-In-Place) cycles faster and more effective.
Conclusion: Secure Your Production Line
Choosing the right flexible connector is a critical safety decision. The SOSHH PUAS series offers the ultimate combination of ATEX-compliant static dissipation, extreme mechanical durability, and global hygiene certifications.
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