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Double Wall
Fiberglass
Sleeves Protect
Wires & Spark Plug
Boots Up To 1,200°F
For decades, Techflex’s Insultherm braided fiberglass sleeving has been the first
choice among automotive professionals and enthusiasts alike for many of their
thermal protection applications.
These innovative sleeves offer the same high temperature protection in an easy
slip on sleeve that will extend the life of expensive spark plug wires by protecting
them where they need it most... at the boot. Just slip these 19,1mm diameter
double thickness (triple thick at the sewn end) sleeves over any spark plug cable
and boot (even right angle boots) to protect them from engine temperatures up
to 649°C. Once installed, the sleeves require no clearance from hot surfaces and
can even rest directly on hot exhaust headers without affecting performance.
Insultherm Spark Plug Boot Sleeves are completely non-conductive, resist all
engine chemicals, will not support combustion, and provide an easy, economical
solution to the challenge of wire protection in the cramped, high temperature
environment of any high performance engine compartment.
• Economical, Long
Lasting Protection
• Easy, Slip On
Installation
• Protects up to 1,200°F
• Halogen Free
• Resists Gasoline and
Engine Chemicals
See pg. 105 for
the custom kits.
Nominal
Size
Part
#
Diameter
Wall
Thickness
Bulk
Box
Available
Colors
No Ring-Easy Install
114,3mm
190,5mm
304,8mm
FBN0.75
FCN0.75
FDN0.75
19,1mm
19,1mm
19,1mm
2,2mm
2,2mm
2,2mm
144
144
144
NT in-stock color; all other available by special order only.
NT, BL, BK, RD
NT, BL, BK, RD
With Ring
190,5mm
FCU0.75
19,1mm 2,2mm 144
NT, BL, BK, RD
Insultherm Spark Plug Boot Sleeves can rest
directly on hot headers and other engine
components without burning, melting,
or becoming brittle.
NT
RD
BL
BK
Natural
Red
Black
Blue
Available in three standard lengths: 4 1/2” ,
7 1/2” , and 12”.
With ring
48
1-973-300-9242
www.techflex.com
EXTREME
TEMPERATURE