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 010403 Heat Sheath 3/4" I.D. x 3ft Aluminized Sleeving for Ultimate Hi-Temp Protection

Product ID: 340538729

Details

Brand
Design
Item thickness
1 Inches
Material
Aluminum
Product dimensions
25.4L x 10.2W
Recommended uses for product
Heat for wires

🔥Withstands 500°F direct heat

✂️Custom trim to fit any setup

🌡️Reflects up to 2000°F radiant heat

A$52

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Description

🔥 Stay cool under pressure with ultimate heat protection!

TAILOR MADE LENGTH - Trim the sleeving to your exact needs for a seamless, professional installation every time.
EXTREME HEAT DEFENSE - Shield your cables and hoses from direct heat up to 500°F and radiant heat soaring to 2000°F.
TRUSTED INDUSTRY LEADER - Ranked #1 in Automotive Heat Wraps with 4.7-star reviews from over 1,100 professionals.
UNIVERSAL FIT FLEXIBILITY - Pliable design slides easily over wires and hoses, bending tightly without compromising protection.
DURABLE CHEMICAL RESISTANT - Built to resist oil, grease, dirt, and harsh chemicals—perfect for automotive and industrial environments.

Design Engineering’s 3/4" I.D. aluminized Heat Sheath offers premium, flexible protection for wires, cables, and hoses against extreme heat—withstanding 500°F direct and 2000°F radiant heat. Its durable, chemical-resistant construction extends component life in automotive, industrial, and marine settings, while easy trimming and universal fit ensure a perfect, professional installation every time.

Specifications

ASIN	B000E267M4
Best Sellers Rank	#23,734 in Automotive ( See Top 100 in Automotive ) #15 in Automotive Heat Wrap, Matting & Sleeving
Brand Name	Design Engineering
Customer Reviews	4.7 4.7 out of 5 stars (1,186)
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	25.4L x 10.2W centimeters
Item Thickness	1 Inches
Item Type Name	Aluminized Sleeving for Ultimate Hi-Temp Protection
Item Weight	91 g
Manufacturer	Design Engineering
Manufacturer Part Number	10403
Manufacturer Warranty Description	Warranty
Material Type	Aluminum
Model Number	10403
Number of Items	1
Number of Packs	1
Recommended Uses For Product	Heat protection for wires, cables and hoses
UPC	607078104038
Unit Count	3 Feet

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A$52

Duties & taxes included

In stock

Sold byAmazon AustraliaDelivered 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 Australia.

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Join PRO →

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Imran F.

Very reliable shop with genuine products. Will definitely buy again!

2 weeks ago

Neha S.

Excellent communication throughout the order process. Product is perfect.

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