How is this sleeve measured? Are the listed sizes diameters or are they the measurements of the sleeve when layed flat?

Actually, the perimeter of a 3/4" diameter pipe is 2-3/8".

Will the 1.5 inch sleeve fit over a 1.5 inch radiator hose, or will it be too snug?

if the radiator hose is truly a 1.5" o.d and straight then yes it will fit, but if the hose expands as rubber does, then it will be greater than 1.5" and it may split the sleeve, If it is a curved hose then it will be greater than 1.5" o.d. in portions and the sleeve will not fit. You would not want to put this on a radiator hose as it would trap heat and not allow the radiator hose to radiate and dissipate heat properly. If the hose is not carrying hot water but merely used as a drain hose, then this is fine. This it meant to protect from radiant heat but also retains heat internally which could cause your rubber hose to fail prematurely and due to being obscured by the wrap you could not inspect the hose for sponginess, cracking or impending failure. Basically, not a good idea for that purpose.

What is the inside diameter

The product is in a roll. The diameter is what ever you make it.

Can this be used on the egr valve tube

Yes, the Design Engineering 010418 Heat Sheath can be used on the EGR valve tube. The inner diameter of the heat sheath is 0.5 inches, which is larger than the inner diameter of most EGR valve tubes (typically 0.4 inches). This means that the heat sheath will fit snugly over the EGR valve tube and provide protection from heat.

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Design Engineering Heat Sheath™ Aluminized Sleeving – 3/4" I.D. x 3 ft High-Temperature Heat & Abrasion Protection for Hoses, Lines & Wires | Reflects Up to 2000°F

Design Engineering Heat Sheath™ Aluminized Sleeving – 3/4" I.D. x 3 ft High-Temperature Heat & Abrasion Protection for Hoses, Lines & Wires | Reflects Up to 2000°F

Product ID: 7124081

Details

Brand
Design
Global Trade Identification Number
Material
Aluminum
Number of Packs
1
Product Dimensions
10"L x 4"W

🔥Reflects radiant heat up to 2000°F

⚙️Easy slip-on installation, no tools needed

🛡️Heavy-duty abrasion & chemical resistance

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Description

🔥 Shield your gear from heat like a pro — because failure isn’t an option!

TRUSTED QUALITY - Proudly made in the USA with a 4.7-star rating from over 1,100 professionals who demand reliability.
RUGGED DURABILITY - Built with 19 oz high-temp fiberglass and aramid fiber thread for unmatched abrasion, oil, and chemical resistance.
VERSATILE PROTECTION - Ideal for hoses, fuel lines, wiring, and cables in automotive and industrial environments exposed to extreme heat and grime.
EFFORTLESS INSTALLATION - Slip-on design means no special tools—cut to length, slide on, and secure for instant protection.
ULTIMATE HEAT REFLECTION - Aluminized outer layer deflects intense radiant heat up to 2000°F, keeping your components cooler and safer.

Design Engineering Heat Sheath™ Aluminized Sleeving is a premium 3/4" I.D. x 3 ft protective sleeve engineered to reflect radiant heat up to 2000°F and withstand direct heat up to 500°F. Constructed from heavy-duty 19 oz fiberglass insulation bonded to an aluminized outer layer, it offers superior abrasion, chemical, and oil resistance. Designed for easy slip-on installation without tools, it safeguards hoses, wires, and cables in demanding automotive and industrial settings, ensuring long-lasting thermal protection and operational reliability.

Specifications

ASIN	B000E267M4
Best Sellers Rank	#3,983 in Automotive ( See Top 100 in Automotive ) #6 in Automotive Replacement Exhaust Heat Wrap, Matting & Sleeving
Brand Name	Design Engineering
Customer Reviews	4.7 4.7 out of 5 stars (1,201)
Global Trade Identification Number	00607078104038
Included Components	Design Engineering 010403 Heat Sheath 3/4" I.D. x 3ft Aluminized Sleeving for Ultimate Hi-Temp Protection
Item Dimensions L x W	10"L x 4"W
Item Type Name	Aluminized Sleeving for Ultimate Hi-Temp Protection
Item Weight	3.2 ounces
Manufacturer	Design Engineering, Inc.
Manufacturer Part Number	10403
Manufacturer Warranty Description	Warranty
Material Type	Aluminum
Model Number	10403
Part Interchange Info	010403
UPC	607078104038
Unit Count	3.0 Feet

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In stock

Sold byAmazon PanamaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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

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