Rubber insulation pipe (closed cell nitrile rubber foam) is the most mainstream insulation material for household air conditioning copper pipes and solar hot and cold water pipes. Below are the advantages, disadvantages, selection points, and suitable working conditions.

1、 Advantages

1. Closed cell structure, strong waterproof and moisture-proof ability

Internally, it is an independent sealed bubble with extremely low water absorption rate, and is not afraid of being soaked in rainwater or condensation water; Compared to glass wool and rock wool, which lose their insulation effect directly when exposed to water, outdoor water pipes are very suitable.

2. Excellent insulation and anti condensation effects

The conventional thermal conductivity is 0.034-0.036W/(m · k), and the insulation performance at room temperature is sufficient for household use; After wrapping the air conditioning copper pipe, it can prevent condensation and dripping on the outer wall.

3. Soft material and convenient construction

The texture is soft and bendable, and elbows, tees, and complex pipelines can fit snugly with the pipes; The open type insulation pipe can be directly fastened onto the pipe material, making it easy to handle and cut for home decoration.

4. Comes with shock absorption and sound insulation

It can buffer the vibration of air conditioning refrigerant flow, water flow noise in pipes, and reduce pipe resonance noise.

5. Wide temperature range

Conventional temperature resistance -50 ℃ to 105 ℃, taking into account low-temperature antifreeze in winter and solar 80-90 ℃ hot water pipelines, with universal use for both hot and cold pipelines.

6. Optional flame retardant and high safety

Qualified B1 grade fire-resistant rubber, self extinguishing upon ignition, no melting droplets, suitable for indoor home decoration and anti freezing water pipes with electric heat tracing belts.

7. Long service life

After being wrapped with aluminum foil tape to block ultraviolet rays, it can be used outdoors for 8-15 years; The texture is flexible and not easily cracked by vibration.

2、 Disadvantages

1. Afraid of sunlight and ultraviolet exposure

The rubber body is not resistant to sunlight, and direct exposure in the open air can accelerate aging, brittleness, cracking, and pulverization; Outdoor pipelines must be fully covered with aluminum foil tape or aluminum foil fiberglass cloth for protection.

2. Limited upper limit of high temperature resistance

After exceeding 105 ℃, it will soften and age; High temperature collection circulation pipelines exceeding 110 ℃ are not suitable and need to be replaced with high-temperature resistant rubber and rock wool.

3. High density and high-quality products are priced higher

Low density and inexpensive rubber materials have large pores and are prone to flattening and compression, greatly reducing their insulation capacity; The low-priced B2/B3 flammable models pose a fire hazard.

4. Easy to scratch when encountering sharp objects

The outer layer does not have a hard protective layer, and it is easy to be damaged and water enters after collision during rooftop construction, requiring outer protection.

5. General corrosion resistance

Strong acidity and alkalinity, high salt spray environment along the coast will accelerate the aging rate, and it is necessary to thicken the outer aluminum foil protective layer.

3、 Suitable&Not Suitable for Use Scenarios

Suitable

Split air conditioning refrigerant copper pipe, condensate pipe

Household solar hot and cold water pipelines, rooftop water supply and return pipelines

Floor heating water divider, insulation and antifreeze for household water supply and drainage pipes

Outdoor water pipe with anti freezing electric heating strip

not suitable

High temperature industrial hot water pipelines above 1.110 ℃

2. Fire ventilation ducts (public area ducts require Class A non combustible materials, with rubber up to B1)

3. Pipelines that are exposed to direct sunlight for a long time without external sun protection

4、 Purchase Tips

Priority for home decoration is given to B1 grade closed cell high-density rubber, which is thick and not easily collapsed when pressed, and has almost no pungent plastic odor; After the completion of outdoor pipeline insulation, wrap the entire process with aluminum foil for sun protection.

Do you need me to also organize a comparison table between rubber insulation pipes, polyurethane, and rock wool?

Shandong Huaneng Insulation Materials Co., Ltd. is a pipeline insulation manufacturer in Linyi. As an integrated insulation and decoration manufacturer in Shandong, our main products include integrated insulation and decoration, pipeline insulation, exterior wall insulation materials, extruded polystyrene board, thermosetting polystyrene board, and rubber insulation. If you need it, you can contact us by phone.

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