Rittal SZ Pressure Compensation Plug M12 x 1.5 Stainless Steel 1.4305 IP68 (4000300)

Temperature fluctuations inside sealed enclosures cause pressure differentials that stress seals, promote condensation, and can lead to premature failure of sensitive electronics. The Rittal SZ pressure compensation plug equalizes internal and external pressure while blocking moisture and contaminants, ensuring long-term reliability of your control cabinets and industrial enclosures.

Who is it for

This plug is essential for panel builders, system integrators, and maintenance engineers who need to protect outdoor or washdown-rated enclosures from pressure-related damage. It is ideal for applications in food processing, chemical plants, marine environments, and any location with wide temperature swings or high humidity.

Main features

• Equalizes pressure to prevent seal stress and condensation
• Machined from stainless steel 1.4305 (AISI 303) for excellent corrosion resistance
• M12 x 1.5 thread with 10 mm thread length for secure mounting
• IP68 protection rating – fully dust-tight and protected against continuous immersion
• NEMA 4X rating – suitable for harsh indoor and outdoor environments
• Operating temperature range: -40 °C to +100 °C
• EPDM gasket ensures reliable sealing over a wide temperature range
• Simple screw-in installation with 5 Nm tightening torque
• UL and cUL approved for global compliance

Specifications

• Product type: Pressure compensation plug
• Material: Stainless steel 1.4305 (AISI 303)
• Thread size: M12 x 1.5
• Thread length: 10 mm
• Overall length: 20 mm
• Head diameter: 17 mm
• Gasket material: EPDM
• Protection category: IP68 / NEMA 4X
• Operating temperature: -40 °C to +100 °C
• Tightening torque: 5 Nm
• Surface finish: Untreated (metallic)
• Approvals: UL, cUL
• Packaging unit: 1 piece

Tips

For optimal performance, install the plug in a location that allows free air exchange while preventing direct water spray. Pair with other Rittal pressure compensation components for a complete enclosure climate control solution. Regularly inspect the EPDM gasket for signs of wear and replace if necessary to maintain the IP68 rating.