3M 8440 Silicone Rubber Cold Shrink Connector Insulators

Category	Polymer , Thermoset , Rubber or Thermoset Elastomer (TSE)
Manufacturer	3M
Trade Name
Port	Ningbo port,China
Trade Terms	FOB, CFR, CIF
Payment Terms	L/C, T/T, Western Union
Download PDF	3M 8440 Silicone Rubber Cold Shrink Connector Insulators.pdf
Price	EMAIL US sales@lookpolymers.com
	Online Service lookpolymers 27660005

Material Notes:

3M™ Cold Shrink Connector Insulators 8440 Series are open ended, silicone rubber, tubular sleeves. The sleeves are factory expanded and assembled on a removable supporting plastic core. Each rubber assembly is supplied fro field installation in this pre-stretched condition. As the core is unwound, the insulating sleeve shrinks to form a tight seal. Three sizes of Cold Shrink Insulators cover terminal lug barrels and three sizes of Cold Shrinks Insulators cover inline connectors. Each insulator type, collectively has an application range of 0.35” (8.86 mm) to 0.95” (24.13 mm) for installations on #6 AWG to 3/0 AWG.Information provided by 3M

Physical Properties	Metric	English	Comments
Density	1.23 g/cc	0.0444 lb/in³

Mechanical Properties	Metric	English	Comments
Hardness, Shore A	48	48	ASTM D2240-75
Tensile Strength, Ultimate	8.55 MPa	1240 psi	ASTM D412-75
100% Modulus	0.00124 GPa	0.180 ksi
Tear Strength Test	1.28	1.28	[Mpa], Die B; ASTM D624B-73

Electrical Properties	Metric	English	Comments
Dielectric Strength	21.4 kV/mm	543 kV/in	7 days @ 90°C in water; ASTM D149-75
	21.8 kV/mm @Thickness 1.78 mm	554 kV/in @Thickness 0.0700 in	ASTM D149-75

Descriptive Properties	Value	Comments
Appearance	Gray

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