Bakelite / Hylam Insulation Sheets

Bakelite / Hylam Insulation Sheets | Phenolic Paper Laminate for Electrical Applications

Bakelite / Hylam Sheets are high-strength phenolic resin–bonded paper laminates designed for electrical insulation and structural applications. They are manufactured by impregnating insulating paper with phenolic resin and curing it under high temperature and pressure. This produces a rigid, durable laminate with excellent mechanical strength, dielectric performance, and thermal stability.

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3240 Glass Epoxy Sheets | High-Performance Electrical Insulation Laminate

3240 Glass Epoxy Sheets are high-quality electrical glass fabric reinforced epoxy laminates, manufactured by impregnating woven glass cloth with epoxy resin and curing it through controlled drying and hot pressing. This material is comparable to EPGC201 and is widely used for electrical and structural insulation in motors, transformers, and electrical equipment.

These sheets are widely used for electrical insulation components in motors, transformers, switchgear, and electrical equipment, especially where high voltage, oil resistance, and mechanical strength are required. Bakelite laminates also perform reliably in transformer oil and humid environments.

Available in a characteristic red-brown color, Bakelite / Hylam sheets are easy to machine and ideal for gears, insulating plates, gaskets, spacers, and structural electrical parts.

Product Details

Material

Insulating paper + Phenolic resin

Product Type

Phenolic Paper Laminate

Thermal Class

Class B

Insulation Sheet Type

Bakelite / Hylam

Color

Red Brown

Thermal Index

120 °C

Maximum Voltage

> 100 kV

Fire Resistance

Yes

Application

Electrical insulation & structural parts

Oil Resistance

Suitable for transformer oil

NEMA, IEC, Mil Spec Material Comparative Table
NEMA	IEC	Mil Spec	Resin	Substrate
NEMA G-10	EPGC 201, 21*	MIL-I-24768/2 GEE	Epoxy	Glass Cloth
NEMA FR4	EPGC 202, 23*	MIL-I-24768/27 GEE-F	Epoxy	Glass Cloth
NEMA G-11	EPGC 203, 22*	MIL-I-24768/3 GEB	Epoxy	Glass Cloth
NEMA FR5	EPGC 204	MIL-I-24768/28 GEB-F	Epoxy	Glass Cloth
—	EPGC 205	—	Epoxy	Glass Cloth
—	EPGC 306	—	Epoxy	Glass Cloth
—	EPGC 307	—	Epoxy	Glass Cloth
—	EPGC 308	—	Epoxy	Glass Cloth
—	EPGC 309	—	Epoxy	Glass Cloth
—	EPGC 310	—	Epoxy	Glass Cloth
—	EPGC 311	—	Epoxy	Glass Cloth
—	EPGM 203	—	Epoxy	Glass Mat
—	EPPC 301	—	Epoxy	Polyester Cloth
NEMA G-5	MFGC 201, 20*	MIL-I-24768/8 GMG	Melamine	Glass Cloth
NEMA G-9	MFGC 201	MIL-I-24768/1 GME	Melamine	Glass Cloth
NEMA C	PFCC 201, 23*	MIL-I-24768/16 PBM	Phenolic	Cotton Cloth
NEMA CE	PFCC 202, 22*	MIL-I-24768/14 FBG	Phenolic	Cotton Cloth
NEMA L	PFCC 203	MIL-I-24768/15 FBI	Phenolic	Cotton Cloth
NEMA LE	PFCC 204, 21, 24	MIL-I-24768/13 FBE	Phenolic	Cotton Cloth
NEMA X	PFCP 201, 21*	MIL-I-24768/12 PBM	Phenolic	Cellulosic Paper
NEMA XP	PFCP 201	MIL-I-24768/19 PBM-P	Phenolic	Cellulosic Paper
NEMA XXX	PFCP 204	MIL-I-24768/10 PBE	Phenolic	Cellulosic Paper
NEMA XX	PFCP 202, 23*	MIL-I-24768/11 PBG	Phenolic	Cellulosic Paper
NEMA XXP	PFCP 203	MIL-I-24768/21 PBG-P	Phenolic	Cellulosic Paper
NEMA XXXP	PFCP 204	MIL-I-24768/22 PBE-P	Phenolic	Cellulosic Paper
NEMA XPC	PFCP 207	MIL-I-24768/20 PBM-C	Phenolic	Cellulosic Paper
NEMA G-3	PFGC 201, 21*	MIL-I-24768/18 GPG	Phenolic	Glass Cloth
NEMA GPO-1	UPGM 201	MIL-I-24768/4	Polyester	Glass Mat
NEMA GPO-2	UPGM 202	MIL-I-24768/5	Polyester	Glass Mat
NEMA GPO-3	UPGM 203	MIL-I-24768/6	Polyester	Glass Mat
—	UPGM 205	—	Polyester	Glass Mat
—	PIGC 301	—	Polyimide	Glass Cloth
NEMA G-7	SIGC 201, 21*	MIL-I-24768/17 GSG	Silicone	Glass Cloth