Hitlin - The Industrial Insulation Standard for the 21st Century

An Advanced Insulation Solution

Excellent Thermal Performance: HITLIN™ E-glass can dramatically reduce heat loss (35% less compared to Calcium Silicate) in hot equipment and piping applications because of its exceptionally low thermal conductivity.

Low Chloride Content

Excellent Dimensional Stability

Unbreakable (Reusable)

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Technical Information

Properties of E-Glass

Properties of E-Glass
Properties of E-glass
Melting point	2084 °F (1140 °C)
Softening Point	1562 °F (850 °C)
Tensile Strength	370 kg/m²
Young's Modulus	7700 kg/m²
Density	2.54 g/cm³
Coefficient of Linear Thermal Expansion	5.0 1×10/°C

Composition of E-Glass (%)

Composition of E-Glass (%)
Composition of E-Glass (%)
Silicon Dioxide (SiO₂)		50.2 ~ 55.4
Calcium Oxide (CaO)		24 ~ 29
Aluminum Oxide (Al₂ O₂)		11 ~ 13
Boric Oxide (B₂ O₂)		5.4 ~ 6.4
Magnesium Oxide (Mg₂)		0.4 ~ 0.9
Sodium Oxide (Na₂O)		0.3
Iron Oxide (Fe₂O₂)		0.3
Potassium Oxide (K₂O)		0.2

Thermal Conductivity Values

Listing below shows thermal conductivity values for E-Glass Fiber Pipe Insulation and other pipe insulations at the same temperature.
Thermal Conductivity @ 90°C
	W/m/K	Btu in/h/ft²/degF
E-Glass Fiber (HITLIN™)	0.033	0.226
Calcium Silicate	0.065	0.450
Perlite	0.076	0.530

Density Range

E-Glass Pipe Insulation is normally supplied at the optimum density for ease of handling. The normal density range of HITLIN E-Glass is from 180 to 220 kg/m³. E-Glass Fiber maintains its structural integrity even after years of service at high temperatures -- this is due to the mechanical binding in the needle mat manufacturing process. Other insulations become cracked or broken (chemical &/or physical reaction) when exposed to high temperatures.
Density (kg/m³)
E-Glass Fiber (HITLIN™)		180 to 220
Perlite		150
Calcium Silicate		220

Accoustic Qualities

Although primarily designed for thermal insulation, HITLIN™ has a highly pourous interconnected fibrous structure with good sound absorption qualities.
HITLIN™ as an Accoustic Insulation
Frequency (Hz)		Absorption Coefficient
125		0.036
250		0.072
500		0.180
1000		0.480
2000		0.750
4000		0.860

Water Repellancy Data

Water repellancy data below is based on materials which have been specially treated.
E-Glass Fiber Pipe Insulation is tested with continuous water drops over a several day period of time, without damage. During this period, the insulation will slowly absorb some water (below 10% of weight). If exposed, it can be dried out and still remain water repellant.
Water Repellency (%, after one day)
E-Glass Fiber (HITLIN™)		99.7
Perlite		98
Calcium Silicate		98

Insulation pH Value

Selection criteria for insulation should also include pH. pH levels above or below neutral values may promote corrosion under insulation.
Insulation pH Value
E-Glass Fiber (HITLIN™)		9.6
Perlite		11
Calcium Silicate		9.1

Chloride Leaching and Stress Corrosion Cracking (SCC)

Stress Corrosion Cracking (SCC) of austensic stainless steel may be encountered when the steel is exposed with solutions containing halide ions, especially chloride ions. Chlorides are a potential source of halide ions. Some quantities of silicate are necessary to prevent the cracking phenomena; they tend to nullify the effect of chlorides. HITLIN™ E-Glass fiber has a very low leachable chloride content and an optimum amount of silicate material. These amounts fall well within acceptable ranges.
Chloride Leaching and Stress Corrosion Cracking (SCC)
	Cl (ppm)	Na + SiO³ (ppm)
E-Glass Fiber (HITLIN™)	20	1580
Perlite	--	--
Calcium Silicate	32	4700

Technical Specification Sheets

HITLIN™ Industrial Insulation is a preformed high-density, unbreakable, reusable pipe and board insulation with superior strength and durability. A patented manufacturing process combines specially processed E-glass needled-mat and inorganic binders to form a non-combustible high-temperature insulation with superior thermal performance and excellent fire resistant properties.
Technical Specification sheets
Technical Secifications	Performance	Data Sheet
HG-RCUI Pipe & Board	(99.7% Water Resistant)	Download
HG-SCUI Pipe & Board	(Water Resistant)	Download
HG-NCUI Pipe & Board	(Base Material)	Download
HG-FELT	--	Download
Specification Criteria	--	Download
Compressive Strength	--	Download
Labor Comparison	--	Download
Water Resistance Designations	--	Download

HITLIN™ Industrial Insulation

or Fiberglass Pipe & Tank Wrap

Judge against your current insulation

High Density Industrial Product (not soft and “squishy” like common fiberglass products)

At 500 °F (Energy Efficiency)

16% lower thermal conductivity than 8.0 #/ft³ Pipe & Tank Wrap

35% lower thermal conductivity than 2.5 #/ft³ Pipe & Tank Wrap

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The Industrial Insulation Standard for the 21st Century

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