
	O-Rings, Quad Rings®, Back-Up Rings
	Gaskets
	Mechanical Seals
	Hydraulic Seals
	Radial Shaft Seals/Oil Seals
	Teflon®/PTFE Products
	Custom Diaphragms
	Sanitary Gaskets
	EMI Shielding
	Rubber Products
	Rubber Extrusions
	Cord Stock
	Sheet Stock
	Thread Seals
	Lubricants
	Adhesives
	Plastic Injection Molded Parts
	Machined Metal Parts
	Packings
	Permaglyde® (Friction Reduction)


	Engineering Assistance
	Design Consultation
	Material Compatibility
	Value/Reverse Engineering
	Friction Management
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	Equivalent Materials
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	Sub Assembly
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Contact Information

All Seals Incorporated
The Sealing Specialists

CALIFORNIA OFFICE:
20762 Linear Lane
Lake Forest, CA 92630
Phone: (714) 556-4931
Toll Free: (800) 553-5054
Fax: (714) 557-3257

TEXAS OFFICE:
4407 Halik Road, Building A
Pearland, TX 77581
Phone: (281) 404-4384
Toll Free: (800) 553-5054
Fax: (281) 715-5379

Now Accepting

Formex� GK

Formex™ GK by ITW is a flame retardant electrical insulation and barrier material designed for consumer and industrial electronic equipment. It can folded and fabricated into economical 3-dimensional parts that won’t crack or split. It is non-hydroscopic, offers superior chemical resistance and meets all major flammability standards and environmental requirements in Asia, North America and Europe.

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Applications

Electrical insulation and barriers
Economical 3-dimensional parts
Replacement for polycarbonate, PVC, polyester and aramid papers
Low-cost internal mechanical parts, such as as air-flow baffles and wire-harness organizers

Features and Benefits

Resists flames; UL94V-O rating; RoHS Compliant
Possesses superior dielectric strength properties
Resists chemicals
Complies with UL, CSA, IEC, VDE, TUV, BSR and MITI standards

Availability

Color: Natural and black
Rolls: 600′ – 4000′ long
Sheets: 24 x 48, 48 x 96 (black only)
Thicknesses: .040″ – .062″ (1.02 – 1.57 mm)

PROPERTIES	TEST METHOD	RESULTS RANGE
MECHANICAL PROPERTIES
Tensile Yield - psi Machine Direction Transverse Direction	ASTM- D-882	4400 3200
PHYSICAL PROPERTIES
Density - gm/cc	ASTM D-792	1.035
Flammability	UL 94	VTM-0; V-0
Oxygen Index	ASTM D-2863	29
Water Absorption - % change in weight	ASTM D-570	0.06%
Heat Deflection Temperature at 66 psi	ASTM D-648	121°C/250°F
Relative Thermal Index Electrical Mechanical Without Impact	UL 746B	115°C/239°F 115°C/239°F
Surface Energy - dynes/cm (as produced)	ASTM D-2578	≥ 50 outside only*; ≥ 50
ELECTRICAL PROPERTIES
Dielectric Breakdown - volts	ASTM D-149	13,125 - 32,400
Dielectric Strength - volts/mil	ASTM D-149	1080 - 2625
Volume Resistivity - ohm-cm	ASTM D-257	3.97 x 1015
Dielectric Constant	ASTM D-150	2.30
Dissipation Factor	ASTM D-150	0.0019
High Current Arc Ignition - arcs to ignite	UL 746A	162 - 200
High Voltage Arc Tracking - in/min	UL 746A	0.0
Hot Wire Ignition -seconds	UL 746A	7 - 12
Comparative Tracking Index - volts	ASTM D-3638	600
*(Formex GK-5BK treated one side only)

We serve a wide range of industries... When you have a sealing problem, contact us for the most effective solution.