The role of PU forming sealing strip in Metal Enclosure

JulianZDecember 11, 20240 comments

Electrical enclosures frequently use polyurethane (PU) foam sealing strips because of their superior flexibility, toughness, and sealing capabilities. They are frequently employed to ensure IP standards are met while providing a dependable barrier against air, water, and dust intrusion.

Properties of the Material:

Flexibility: Outstanding elasticity to maintain a constant seal and account for enclosure tolerances.
Durability: Able to withstand wear, UV rays, and other environmental conditions.
Compression Set Resistance: Even after extended compression, it maintains its shape and sealing ability.

Structure:

Foam Core: The lightweight, closed-cell foam structure provides effective sealing and shock absorption.
Skin Layer: Often has a smooth or semi-smooth outer surface to enhance durability and resistance to abrasion.

Advantages:

IP Compliance: Ideal for enclosures requiring IP65, IP66, or higher ratings, providing effective protection against water and dust.
Temperature Range: Operates effectively in a wide temperature range, typically from -40°C to 80°C or more, depending on the specific formulation.
Customization: Can be manufactured in various shapes, sizes, and profiles to match enclosure designs.
Ease of Application: Applied directly to enclosure grooves or flanges, often self-adhesive for simplified installation.

Manufacturing Methods:

Direct Foaming: PU foam is applied directly to the surface of the enclosure or panel, forming an in-situ gasket.
Extruded Foam Strips: Prefabricated strips supplied in rolls or lengths for application on site.

Applications:

Electrical and electronics enclosures (industrial and outdoor).
Control panels, switchgear, and distribution boxes.
Automotive and HVAC systems.
Telecommunications equipment.

Installation Tips:

Ensure surfaces are clean, dry, and free from grease or dust before application.
For adhesive-backed strips, press firmly to ensure a strong bond.
Avoid stretching the strip during application to maintain its sealing properties.
Test the seal after installation by performing a water or dust ingress test if IP compliance is required.

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How Can We Help Your Business?

What’s your company main products?
The main business is to provide customers with custom enclousure services, we also sell some General Boxes.
How about the price of the product?
We are a manufacturer, we mainly provide customized services for our customers, and we believe that our prices have enough advantages.
What does the enclosure customization service contain?
Box Sizes,Box Colors,Door Types,Gland Plates,Specific Cutouts,Moutning Plates,Protective Covers,Standing Types,Windows,Thickness,Accessories.
Can we get the sample? Is it free?
Yes, we could offer the general box sample for free charge,but need you pay the express. The freight depends on weight, packing size and your country or province region, etc.
What’s about MOQ?
First order MOQ=1pcs.
How can I get product catalogs?
You can get the catalogs by contacting us.
How to order our product?
1.Please tell us the model and quantity and other request you need.

2.We make the PI for you.

3.After you confirm the PI, we arrange the order for you after receiving your payment.

4.After the goods finished, we send the goods out to you and tell you the tracking number.

5.We will track your goods until you receive the goods.
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If you meet any problems after sales, pis contact us freely, we’ll help solving the problems within 24 hours.
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100% T/T (large order, accept 30% T/T prepay 70% balance before shipping), Western Union, Paypal.