What is the R value of the 1.18"?

This is a good question that unfortunately I cannot readily answer looking at the description of the item which states: Good thermal insulation Rubber insulation pipe adopts closed cell structure, low thermal conductivity, stable temperature, and has the function of thermal insulation.....if we take the verbiage they elect to use indicates it "adopts" closed cell structure. Really !? it adopts ? So is it or isn't it ? It goes on to say it "has the function of thermal insulation", well I would think so !! Proclaiming it has the function as opposed to stating that it has the function....perhaps something is getting lost in translation... If I take what they say literally, i.e. that the material is in fact "closed cell rubber" then the following would apply to your question: This is closed-cell foam rubber, on the other hand, becomes rigid upon application and has an R-value range of 6 to 7.

Can this be used on underground sewage lines?

I suppose it depends how far underground and what kind of material (rocks / aggregate / sand etc.) it would be exposed to, it would eventually break down over time and or get crushed from the weight / force around it... it's not designed to be buried under ground , if you do, you do so at your own risk...

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Water Pipe Insulation Tubing 3/4" 1" 1-1/4" 1-1/2" 2" 2-1/2" 3" 3-1/2" 4" Inner Diameter Foam Tube Insulation for 0.79"/1.18" Thick Wall Insulation Lagging Wrap(0.79",ID 1")

Water Pipe Insulation Tubing 3/4" 1" 1-1/4" 1-1/2" 2" 2-1/2" 3" 3-1/2" 4" Inner Diameter Foam Tube Insulation for 0.79"/1.18" Thick Wall Insulation Lagging Wrap(0.79",ID 1")

Product ID: 517052073

Details

Brand
Plerile
Item Thickness
0.79 Inches
Manufacturer
SYSMG
Material
Rubber
Recommended Uses For Product
Pipe water

🔥Flame retardant & waterproof for extreme weather

❄️0.79" thick wall for superior cold protection

🛠️Fits 3/4" to 4" pipes, versatile sizing

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Description

🔥 Wrap your pipes in next-level protection — because your home deserves the best!

TAILORED FIT RANGE - Comprehensive sizes from 3/4" to 4" ensure perfect pipe coverage every time.
WEATHERPROOF WARRIOR - Industrial-grade flame retardant and waterproof design guards against snow, rain, and heat.
EFFORTLESS INSTALLATION - Cut and glue application saves time and labor—no extra layers needed.
ULTIMATE THERMAL SHIELD - Closed-cell rubber foam locks in heat, slashing energy loss.
MULTI PURPOSE PROTECTION - Beyond pipes—ideal for fitness gear grips and hose insulation, blending utility with style.

This premium rubber foam pipe insulation tubing offers a 0.79" thick closed-cell structure that delivers exceptional thermal insulation and weather resistance. Available in a wide range of sizes from 3/4" to 4" inner diameter, it’s designed for easy cut-and-glue installation without auxiliary layers. Flame retardant, waterproof, and durable, it’s perfect for protecting water pipes, hoses, and even fitness equipment handles, ensuring energy efficiency and long-lasting performance in all climates.

Specifications

ASIN	B0BP26C7XB
Best Sellers Rank	#200,583 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #193 in Pipe Insulation
Brand	Plerile
Brand Name	Plerile
Coverage	thermal insulation
Customer Reviews	4.0 out of 5 stars 175 Reviews
Item Thickness	0.79 Inches
Manufacturer	SYSMG
Manufacturer Part Number	DXKEJAEKZ-0990211B
Material	Rubber
Material Type	Rubber
Model Number	DXKEJAEKZ-0990211B
Number of Items	1
Recommended Uses For Product	Pipe protection, water pipe insulation, fitness equipment protection
Unit Count	1.0 Count

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Fantastic experience overall. Will recommend to friends and family.

1 month ago

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The MOLLE sheath is of exceptional quality. Very happy with my purchase.

2 weeks ago

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$76.62

Duties & taxes included

In stock

Sold byAmazon USADelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to USA.

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TrustScore 4.5 | 7,300+ reviews

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Excellent communication throughout the order process. Product is perfect.

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