FUNAS Insulation Material

FUNAS Insulation Material China insulation material manufacturer. Rubber foam | Glass wool | Rock wool | XPS board | Insulation adhesive
For HVAC, construction & industrial projects.

B2B bulk inquiries welcome.

18/08/2026

A quick soak test with our B1 rubber foam.

The closed-cell structure helps keep water from soaking in, and you can see most of it staying on the surface. The tested vacuum volume water absorption rate was 0.13%.

Questions about the material or specs? Message FUNAS.

11/08/2026

Foil facing adds an extra protective outer layer to rubber foam insulation, commonly used where a finished surface is preferred for HVAC piping, ductwork and other exposed installations.

Need foil-faced rubber foam for your project? Send FUNAS your required size, thickness and quantity.

10/08/2026

B1 Rubber Foam Pipe Under Flame

A simple direct-flame demonstration with our B1 rubber foam insulation pipe.

Need a specific pipe size or thickness? Send FUNAS your required size, thickness and quantity for product details.

Does closed-cell rubber foam eliminate all moisture-ingress risk?No.Its closed-cell structure helps resist water-vapor m...
27/07/2026

Does closed-cell rubber foam eliminate all moisture-ingress risk?

No.

Its closed-cell structure helps resist water-vapor movement through the insulation material. Product test reports may also include water absorption, water-vapor permeability, permeability coefficient and water-vapor resistance factor.

These results describe the tested material sample—not every seam, support, pe*******on or termination after installation.

Moisture can still enter through unsealed joints, damaged areas, compressed support points, pe*******ons or poorly sealed ends.

For project approval, review both the product-specific test data and the proposed installation details. Moisture control depends on the continuity of the complete insulation system.

Closed-cell reduces moisture-ingress risk. It does not eliminate every entry path or eliminate CUI risk.

18/07/2026

Our boss grabbed the camera today and took us around one of the FUNAS factories—this one in Guangdong.

From the warehouse to the production floor, here’s a quick look at rubber foam sheets and tubes.

Questions about sizes or specifications? Send us a message.


15/07/2026

Quick Tube Fit Check

One simple tool, a few seconds, and the batch keeps moving. This routine check looks at the rubber foam tube opening before the next step at FUNAS.

Questions about available diameters or wall thicknesses? Send us your requirements.

When should buyers specify rubber foam sheet instead of preformed tube?Preformed tube is usually the first choice when t...
14/07/2026

When should buyers specify rubber foam sheet instead of preformed tube?

Preformed tube is usually the first choice when the pipe outside diameter and required insulation thickness match an available tube size.

Sheet should be considered when that size–thickness combination is unavailable, when the required pipe diameter is not practical for preformed tube supply, or when the surface is not a simple straight cylinder—such as large fittings, valves, vessels, ducts, or irregular equipment sections.

But sheet is not a universal workaround. On smaller pipes, thicker sheet must bend more sharply, which can increase stress at the longitudinal seam. The sheet should be measured and cut to fit, not stretched around the pipe.

Before ordering, confirm the pipe OD, required insulation thickness, available tube size–thickness combinations, sheet thickness, and fabrication method.

🙆🇨🇳🛶Dragon Boat Festival🛶 is approaching, our staff benefit arrived first. Full of a sense of ceremony👏👏👏
18/06/2026

🙆🇨🇳🛶Dragon Boat Festival🛶 is approaching, our staff benefit arrived first. Full of a sense of ceremony👏👏👏

09/06/2026

🎊🎊🎊Funas' New branch factory in southern China is holding its grand Opening Ceremony today!🤩🥳🥳

Address

No. 610, Xintang Avenue West, Zengcheng District
Guangzhou
511338

Opening Hours

Monday 08:30 - 18:00
Tuesday 08:30 - 18:00
Wednesday 08:30 - 18:00
Thursday 08:30 - 18:00
Friday 08:30 - 18:00

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