G3 Glass Phenolic Tube

Product Description:

Brand: YILONG

Materials: Phenolic Resin + Glassfiber Cloth

Color: Reddish Brown

ID: 10-200mm

Length: 1000mm

Temperature Index: 180

Thermal Class: H

Flammability: HB

Packaging: Pallet, Wooden Box

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product details

Description

G3 Glass Phenolic Tubes are high-performance insulation and structural components designed for demanding electrical and industrial applications. Made from woven glass fabric impregnated with phenolic resin, these tubes combine superior mechanical strength, excellent electrical insulation, and high heat resistance. They are engineered to perform reliably under extreme temperatures, mechanical stress, and harsh environmental conditions.

Features

High mechanical strength and structural integrity
Excellent electrical insulation with strong dielectric properties
Heat resistant, stable from -40°C to 180°C
Chemical, corrosion, and oxidation resistant
Long-lasting durability in industrial environments

Applications

Electrical insulation in transformers, motors, and electrical connectors
Structural components in industrial machinery
Applications requiring high-strength, heat- and chemical-resistant insulation
Environments exposed to mechanical stress, heat, and industrial chemicals

Technical Data Sheet

Test / Property	Unit	G-3	G-5/G9	G-7	G-10	G-11	G-11H
PHYSICAL
Density	g/cm³	1.8	1.85	1.8	1.8	1.8	1.9
Water Absorption, 24 hrs	%	2.65	0.6	0.1	0.1	0.2	0.2
MECHANICAL
Tensile Strength – lengthwise	MPa	289	425	138	310	296	280
Tensile Strength – crosswise	MPa	234	352	-	262	255	250
Flexural Strength – lengthwise	MPa	279	425	207	517	552	372
Flexural Strength – crosswise	MPa	234	352	-	448	483	124
Flexural Modulus – lengthwise	GPa	12.4	13.8	11	18.6	20.7	14
Flexural Modulus – crosswise	GPa	9.7	11.7	-	16.6	18.6	12
Izod Notched Impact – lengthwise	kJ/m²	0.64	0.67	0.64	0.71	0.61	16
Izod Notched Impact – crosswise	kJ/m²	0.59	0.45	-	0.61	0.46	14
Compressive Strength	MPa	379	448	345	448	434	346
Hardness, Rockwell M	—	110	115	105	110	112	112
THERMAL
Coefficient of Linear Thermal Expansion – lengthwise	10⁻⁶ / °C	1.46	1.27	1.15	0.88	1.15	15
Coefficient of Linear Thermal Expansion – crosswise	10⁻⁶ / °C	1.76	1.45	1.38	0.88	1.27	20
Max Operating Temperature	°C	180	140	220	140	165	180
Thermal Class	/	H	B	C	B	F	H
Flammability Rating	UL94	HB	V-0	V-0	HB	HB	HB
Thermal Conductivity	W/m·K	0.29	0.29	0.29	0.29	0.29	0.25
ELECTRICAL
Dielectric Strength (short time, 1/8" thick)	kV/mm	18.1	11.8	13.8	31.5	35.4	16
Dielectric Constant at 1 MHz	—	7.3	6.3	4.5	5	4.5	4.8
Dissipation Factor at 1 MHz	—	0.023	0.019	0.018	0.019	0.02	0.02
Arc Resistance	s	180	180	240	100	120	120

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G3 Glass Phenolic Tube for Electrical Insulation and Industrial Applications