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 – 1/2" I.D. x 3 ft

Product ID: 10457946

Details

Brand
Design
Global Trade Identification Number
Item Thickness
0.5 inches
Material
Aluminum
Recommended Uses For Product
Thermal

🔥Reflects radiant heat up to 2000°F

⚙️Easy slip-on installation, no tools needed

🛡️Heavy-duty abrasion & chemical resistance

E£ 3522

Duties & taxes included

In stock

Sold byAmazon EGYPTDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

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

BUILT TO LAST - Constructed with 19 oz high-temp fiberglass and durable aluminized outer layer for unmatched abrasion and chemical resistance in harsh environments.
TRUSTED QUALITY - Proudly made in the USA with a 4.7-star rating from over 1,200 professionals who demand reliability and performance.
ULTIMATE HEAT DEFENSE - Reflects intense radiant heat up to 2000°F while withstanding direct heat up to 500°F, keeping your components cooler and safer.
EFFORTLESS INSTALLATION - Slip-on design lets you protect hoses and cables quickly without special tools—cut to length and slide on for instant upgrade.
MULTI THREAT PROTECTION - Shields against oil, fuel, chemicals, dirt, grease, and road debris to extend the life of your automotive and industrial lines.

Design Engineering Heat Sheath Aluminized Sleeving is a premium 1/2" I.D. x 3 ft thermal protection sleeve that reflects radiant heat up to 2000°F and withstands direct heat up to 500°F. Made from 19 oz high-temperature fiberglass insulation bonded to a durable aluminum outer layer, it offers superior abrasion, chemical, and oil resistance. Designed for easy slip-on installation, it protects hoses, cables, and fuel lines in demanding automotive and industrial settings, ensuring longer component life and cooler operation.

Specifications

ASIN	B000CEM3M2
Best Sellers Rank	#5,145 in Automotive ( See Top 100 in Automotive ) #8 in Automotive Replacement Exhaust Heat Wrap, Matting & Sleeving
Brand Name	Design Engineering
Coverage	3 feet linear coverage
Customer Reviews	4.7 4.7 out of 5 stars (1,211)
Global Trade Identification Number	00607078104182
Included Components	Design Engineering Heat Sheath Aluminized Sleeving 1/2" X 36" Line And Hose Protection - Sewn
Item Thickness	0.5 inches
Item Type Name	Aluminized Sleeving for Ultimate Hi-Temp Protection
Item Weight	2.88 ounces
Manufacturer	Design Engineering
Manufacturer Part Number	10418
Manufacturer Warranty Description	Not applicbale
Material Type	Aluminum
Model Number	10418
Number of Items	1
Number of Packs	1
Recommended Uses For Product	Thermal Insulation, Abrasion Protection, Chemical Resistance
UPC	607078104182
Unit Count	1 Count

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