Products / Product Details

Heat-shrinkable cable markers

Series

HFMT & HFMT-1

HFMT series heat-shrinkable cable markers are manufactured to the application and fire-behaviour requirements specified by the customer.

They are obtained from irradiated polyolefin tubing, flexible and heat-shrinkable, whose formulation is free of halogens such as cadmium, chlorine and bromine. This makes the product halogen free and therefore suitable for use on railway rolling stock, underground trains, ships and any other vehicle required to comply with these standards.

The marker is supplied blank so it can be printed by the customer, or it can be supplied pre-printed from files provided by the customer. Markers designated HFMT and HFMT-1 are both 50 mm long; the HFMT-1 code indicates that the marker is supplied with a centre pre-cut.

Technical characteristics Product dimensions

Properties	Test method	Measured values
Tensile strength at 23°C	ISO 37	100 MPA
Elongation at break	ISO 37	250 %
Continuous operating temperature	—	From -55°C to +135°C
Minimum shrink temperature	—	100°C
Longitudinal shrinkage	ASTM D2671	±10%
Specific gravity	ISO/R1183	1.38
2% secant modulus of elasticity	ASTM D882	90 MPA
Dielectric strength	IEC 243	20 kV/mm min
Flammability	VW-1	Passed
Elongation after heat ageing test	ISO 37 (168 hours at 160°C)	180%
Thermal shock	ASTM D2671 (4 hours at 200°C)	No dripping
Low-temperature flexibility	ASTM D2671 (4 hours at -75°C)	No cracking or splitting
Fluid resistance	ISO 1817, ISO 37	Good to excellent

Standard colour

White-Yellow

Operating temperature

From -55°C to +135°C

Available length

50 mm and 50 mm with pre-cut at 25 mm

Shrink ratio

2:1

Approval to specification

EN 45545-2:2015

Part number	Before shrinking		After shrinking
	Inner diameter (min) D		Inner diameter (max) d	Wall thickness w
	mm	inch	mm	mm	inch
HFMT-24-x	2.4	3/32	1.2	0.051	0.020
HFMT-32-x	3.2	1/8	1.6	0.51	0.020
HFMT-48-x	4.8	3/16	2.4	0.51	0.020
HFMT-64-x	6.4	1/4	3.2	0.64	0.025
HFMT-95-x	9.5	3/8	4.8	0.64	0.025
HFMT-127-x	12.7	1/2	6.4	0.64	0.025
HFMT-190-x	19	3/4	9.5	0.76	0.030
HFMT-254-x	25.4	1	12.7	0.89	0.035
HFMT-381-x	38.1	1 1/2	19	1.02	0.040
HFMT-508-x	50.8	2	25.4	1.14	0.045

The x indicates the colour: W = White, Y = Yellow.

For example, the code to order the 4.8 mm white marker with pre-cut is HFMT-1-48-W.

Heat-shrinkable cable markers

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