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LSOH : Low Smoke Zero Halogen

LSOH : Low Smoke Zero Halogen

Low smoke zero halogen (LSZH or LSOH) is a type of plastic used in the wire and cable industry for cable jacketing. LSOH cable jacketing is custom compounded to produce minimal smoke and no halogen when exposed to fire.

Most network cables (CAT5, CAT6, etc.) are insulated with poly vinyl chloride (PVC), polyethylene, or thermoplastic urethane (TPU). In a fire, halogen-containing plastic releases hydrogen chloride, a poisonous gas that forms hydrochloric acid when it comes in contact with H2O. Zero Halogen cables do not produce this toxic combination of gas, acid, and smoke when exposed to flame.

Since no harmful toxins are actually released, LSOH material is usually used in poorly ventilated areas such as plenum, aircraft, rail cars, and tunnels in which smoke is likely to both build up and come into contact with people. Low smoke zero halogen material is becoming very popular, and can be required when the safety of people and equipment is critical. Low Smoke Zero Halogen compound also has the added benefit of complying with the European Union’s Restriction of Hazardous Substances (RoHS) directive and similar North American safety and environmental standards.

In 1995 S&E developed our first commercial zero Halogen compound, which we still produce in large quantities. Our innovative line of LSOH compounds fall into two families:

  • Extrusion grades – By using special grades of metal hydroxide and very unique resin combinations, we were able to develop the series of one of the most flexible zero halogen compounds on the market, having a -50C to 90C+ continued use temperature rating, as well as exceptional physical and processing characteristics.
  • Molding Grades – Using advanced phosphorus-nitrogen chemistry, we developed a high grade FR intumescent compound with UL 94 VO rating down to 40-45 mils. Other special characteristics of these compounds are good thermostability and low moisture sensitivity.

We believe we will continue to see increased adoption of zero halogen compounds and alloys, and we are continuously working on new grades, which meet the most critical and demanding application requirements.

BrandIDData SheetApplicationPolymerDurometerDensityTensile, PSIElongation, %Temperature RatingLOIBrittle Temp
TufFill NH™GTPO8290-36
specialty polymers datasheet


An olefin based insulation & jacketing 105⁰C rated compound formulated with excellent deformation characteristics, (SEW, SJEW)
LSOH80 A0.88
2,000
450
105
34
-55
TufFill™GTPO-14-025specialty polymers datasheet

A conductive TPO based non-halogenated compound.LSOH45 (± 3) D1.33 (± .03)1,45022027.5TBD
TufFill™8292-34OR ITspecialty polymers datasheet

An oil resistant, TPO polymer, non-halogenated, 105°C rated compound.LSOH93 A1.05 (± .03)2,10075034-50
TufFill NH™GTPO8291-28ITspecialty polymers datasheet

A polypropylene based, zero halogen, low smoke, flame retardant, 105°C rated
compound with good processing and mechanical characteristics.
LSOH84 A0.942,80087010528-32
TufFill NH™GTPO8291-30ITspecialty polymers datasheet

A polypropylene based, zero halogen, low smoke, flame retardant, 105°C rated
compound with good processing and mechanical characteristics.
LSOH84 A0.952,70086510530-32
TufFill NH™GTPO8291-35ITspecialty polymers datasheet

A polypropylene based, zero halogen, low smoke, flame retardant, 105°C rated
compound with good processing and mechanical characteristics.
LSOH86 A1.002,30085010535-31
TufFill NH™GTPO8291-38ITspecialty polymers datasheet

A polypropylene based, zero halogen, low smoke, flame retardant, 105°C rated
compound with good processing and mechanical characteristics.
LSOH87 A1.032,20081010537-31
TufFill NH™GTPO8291-41ITspecialty polymers datasheet

A polypropylene based, zero halogen, low smoke, flame retardant, 105°C rated
compound with good processing and mechanical characteristics.
LSOH90 A1.062,10075010541-30
TufFill NH™GTPO8291-43ITspecialty polymers datasheet

A polypropylene based, zero halogen, low smoke, flame retardant, 105°C rated
compound with good processing and mechanical characteristics.
LSOH92 A1.072,00070010543-29
TufFill NH™GTPO8291-47ITspecialty polymers datasheet

A polypropylene based, zero halogen, low smoke, flame retardant, 105°C rated
compound with good processing and mechanical characteristics.
LSOH93 A1.081,80081010547-29
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