Tflex SF4 Thermal Gap Fillers

Laird Tflex SF4 Thermal Gap Fillers are silicon-free and offer a 0.5mm to 4mm thickness range with 4.0W/mK thermal conductivity. These gap fillers offer excellent deflection properties, minimizing pressure on components during deflection. A minimal amount of pressure is required to reach the lowest possible thermal resistance. Laird Tflex SF4 Thermal Gap Fillers are designed for datacom systems, automotive electronics, optical modules, and cameras.

Results: 30
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Description Datasheet Availability Pricing (USD) Filter the results in the table by unit price based on your quantity.
Qty. RoHS ECAD Model Product
Type
Package / Case
Material
Thermal Conductivity
Color
Minimum Operating Temperature
Maximum Operating Temperature
Length
Width
Thickness
Tensile Strength
Flammability Rating
Series
Packaging
Laird Thermal Interface Products Tflex SF4 1.00 457x457mm
Datasheet
8In Stock
Min.: 1
Mult.: 1

Gap Fillers / Gap Pads / Sheets Silicone-Free Gap Filler Non-standard Silicone 4 W/m-K Gray (Light Gray) - 65 C + 150 C 457 mm 457 mm 1 mm 30 psi UL 94 V-0 SF4 Bulk
Laird Thermal Interface Products Tflex SF4 1.50 229x229mm
Datasheet
27In Stock
Min.: 1
Mult.: 1

Gap Fillers / Gap Pads / Sheets Silicone-Free Gap Filler Non-standard Silicone 4 W/m-K Gray (Light Gray) - 65 C + 150 C 229 mm 229 mm 1.5 mm 30 psi UL 94 V-0 SF4 Bulk
Laird Thermal Interface Products Tflex SF4 2.00 229x229mm
Datasheet
35In Stock
Min.: 1
Mult.: 1

Gap Fillers / Gap Pads / Sheets Silicone-Free Gap Filler Non-standard Silicone 4 W/m-K Gray (Light Gray) - 65 C + 150 C 229 mm 229 mm 2 mm 30 psi UL 94 V-0 SF4 Bulk
Laird Thermal Interface Products Tflex SF4 2.50 229x229mm
Datasheet
14In Stock
20Expected 10/12/2026
Min.: 1
Mult.: 1

Gap Fillers / Gap Pads / Sheets Silicone-Free Gap Filler Non-standard Silicone 4 W/m-K Gray (Light Gray) - 65 C + 150 C 229 mm 229 mm 2.5 mm 30 psi UL 94 V-0 SF4 Bulk
Laird Thermal Interface Products Tflex SF4 3.00 229x229mm
Datasheet
13In Stock
Min.: 1
Mult.: 1

Gap Fillers / Gap Pads / Sheets Silicone-Free Gap Filler Non-standard Silicone 4 W/m-K Gray (Light Gray) - 65 C + 150 C 229 mm 229 mm 3 mm 30 psi UL 94 V-0 SF4 Bulk
Laird Thermal Interface Products Tflex SF4 3.50 229x229mm
Datasheet
15In Stock
Min.: 1
Mult.: 1

Gap Fillers / Gap Pads / Sheets Silicone-Free Gap Filler Non-standard Silicone 4 W/m-K Gray (Light Gray) - 65 C + 150 C 229 mm 229 mm 3.5 mm 30 psi UL 94 V-0 SF4 Bulk
Laird Thermal Interface Products Tflex SF4 4.00 229x229mm
Datasheet
23In Stock
Min.: 1
Mult.: 1

Gap Fillers / Gap Pads / Sheets Silicone-Free Gap Filler Non-standard Silicone 4 W/m-K Gray (Light Gray) - 65 C + 150 C 229 mm 229 mm 4 mm 30 psi UL 94 V-0 SF4 Bulk
Laird Thermal Interface Products Tflex SF4 0.50 229x229mm
Datasheet
27In Stock
Min.: 1
Mult.: 1

Gap Fillers / Gap Pads / Sheets Silicone-Free Gap Filler Non-standard Silicone 4 W/m-K Gray (Light Gray) - 65 C + 150 C 229 mm 229 mm 0.5 mm 30 psi UL 94 V-0 SF4 Bulk
Laird Thermal Interface Products Tflex SF4 1.00 229x229mm
Datasheet
4In Stock
20Expected 11/10/2026
Min.: 1
Mult.: 1

Gap Fillers / Gap Pads / Sheets Silicone-Free Gap Filler Non-standard Silicone 4 W/m-K Gray (Light Gray) - 65 C + 150 C 229 mm 229 mm 1 mm 30 psi UL 94 V-0 SF4 Bulk
Laird Thermal Interface Products Tflex SF4 0.50 457x457mm
Datasheet
Non-Stocked Lead-Time 9 Weeks
Min.: 10
Mult.: 1

Gap Fillers / Gap Pads / Sheets Silicone-Free Gap Filler Non-standard Silicone 4 W/m-K Gray (Light Gray) - 65 C + 150 C 457 mm 457 mm 0.5 mm 30 psi UL 94 V-0 SF4 Bulk
Laird Thermal Interface Products Tflex SF4 0.75 457x457mm
Datasheet
Non-Stocked Lead-Time 7 Weeks
Min.: 10
Mult.: 1

Gap Fillers / Gap Pads / Sheets Silicone-Free Gap Filler Non-standard Silicone 4 W/m-K Gray (Light Gray) - 65 C + 150 C 457 mm 457 mm 0.75 mm 30 psi UL 94 V-0 SF4 Bulk
Laird Thermal Interface Products Tflex SF4 1.25 457x457mm
Datasheet
Non-Stocked Lead-Time 7 Weeks
Min.: 10
Mult.: 1

Gap Fillers / Gap Pads / Sheets Silicone-Free Gap Filler Non-standard Silicone 4 W/m-K Gray (Light Gray) - 65 C + 150 C 457 mm 457 mm 1.25 mm 30 psi UL 94 V-0 SF4 Bulk
Laird Thermal Interface Products Tflex SF4 1.50 457x457mm
Datasheet
Non-Stocked Lead-Time 7 Weeks
Min.: 10
Mult.: 1

Gap Fillers / Gap Pads / Sheets Silicone-Free Gap Filler Non-standard Silicone 4 W/m-K Gray (Light Gray) - 65 C + 150 C 457 mm 457 mm 1.5 mm 30 psi UL 94 V-0 SF4 Bulk
Laird Thermal Interface Products Tflex SF4 1.75 457x457mm
Datasheet
Non-Stocked Lead-Time 7 Weeks
Min.: 10
Mult.: 1

Gap Fillers / Gap Pads / Sheets Silicone-Free Gap Filler Non-standard Silicone 4 W/m-K Gray (Light Gray) - 65 C + 150 C 457 mm 457 mm 1.75 mm 30 psi UL 94 V-0 SF4 Bulk
Laird Thermal Interface Products Tflex SF4 2.00 457x457mm
Datasheet
Non-Stocked Lead-Time 7 Weeks
Min.: 10
Mult.: 1

Gap Fillers / Gap Pads / Sheets Silicone-Free Gap Filler Non-standard Silicone 4 W/m-K Gray (Light Gray) - 65 C + 150 C 457 mm 457 mm 2 mm 30 psi UL 94 V-0 SF4 Bulk
Laird Thermal Interface Products Tflex SF4 2.25 457x457mm
Datasheet
Non-Stocked Lead-Time 7 Weeks
Min.: 10
Mult.: 1

Gap Fillers / Gap Pads / Sheets Silicone-Free Gap Filler Non-standard Silicone 4 W/m-K Gray (Light Gray) - 65 C + 150 C 457 mm 457 mm 2.25 mm 30 psi UL 94 V-0 SF4 Bulk
Laird Thermal Interface Products Tflex SF4 2.50 457x457mm
Datasheet
Non-Stocked Lead-Time 7 Weeks
Min.: 10
Mult.: 1

Gap Fillers / Gap Pads / Sheets Silicone-Free Gap Filler Non-standard Silicone 4 W/m-K Gray (Light Gray) - 65 C + 150 C 457 mm 457 mm 2.5 mm 30 psi UL 94 V-0 SF4 Bulk
Laird Thermal Interface Products Tflex SF4 2.75 457x457mm
Datasheet
Non-Stocked Lead-Time 7 Weeks
Min.: 10
Mult.: 1

Gap Fillers / Gap Pads / Sheets Silicone-Free Gap Filler Non-standard Silicone 4 W/m-K Gray (Light Gray) - 65 C + 150 C 457 mm 457 mm 2.75 mm 30 psi UL 94 V-0 SF4 Bulk
Laird Thermal Interface Products Tflex SF4 3.00 457x457mm
Datasheet
Non-Stocked Lead-Time 7 Weeks
Min.: 10
Mult.: 1

Gap Fillers / Gap Pads / Sheets Silicone-Free Gap Filler Non-standard Silicone 4 W/m-K Gray (Light Gray) - 65 C + 150 C 457 mm 457 mm 3 mm 30 psi UL 94 V-0 SF4 Bulk
Laird Thermal Interface Products Tflex SF4 3.25 457x457mm
Datasheet
Non-Stocked Lead-Time 7 Weeks
Min.: 10
Mult.: 1

Gap Fillers / Gap Pads / Sheets Silicone-Free Gap Filler Non-standard Silicone 4 W/m-K Gray (Light Gray) - 65 C + 150 C 457 mm 457 mm 3.25 mm 30 psi UL 94 V-0 SF4 Bulk
Laird Thermal Interface Products Tflex SF4 3.50 457x457mm
Datasheet
Non-Stocked Lead-Time 7 Weeks
Min.: 10
Mult.: 1

Gap Fillers / Gap Pads / Sheets Silicone-Free Gap Filler Non-standard Silicone 4 W/m-K Gray (Light Gray) - 65 C + 150 C 457 mm 457 mm 3.5 mm 30 psi UL 94 V-0 SF4 Bulk
Laird Thermal Interface Products Tflex SF4 3.75 457x457mm
Datasheet
Non-Stocked Lead-Time 7 Weeks
Min.: 10
Mult.: 1

Gap Fillers / Gap Pads / Sheets Silicone-Free Gap Filler Non-standard Silicone 4 W/m-K Gray (Light Gray) - 65 C + 150 C 457 mm 457 mm 3.75 mm 30 psi UL 94 V-0 SF4 Bulk
Laird Thermal Interface Products Tflex SF4 4.00 457x457mm
Datasheet
Non-Stocked Lead-Time 7 Weeks
Min.: 10
Mult.: 1

Gap Fillers / Gap Pads / Sheets Silicone-Free Gap Filler Non-standard Silicone 4 W/m-K Gray (Light Gray) - 65 C + 150 C 457 mm 457 mm 4 mm 30 psi UL 94 V-0 SF4 Bulk
Laird Thermal Interface Products Tflex SF4 0.75 229x229mm
Datasheet
Non-Stocked Lead-Time 7 Weeks
Min.: 1
Mult.: 1

Gap Fillers / Gap Pads / Sheets Silicone-Free Gap Filler Non-standard Silicone 4 W/m-K Gray (Light Gray) - 65 C + 150 C 229 mm 229 mm 0.75 mm 30 psi UL 94 V-0 SF4 Bulk
Laird Thermal Interface Products Tflex SF4 1.25 229x229mm
Datasheet
Non-Stocked Lead-Time 7 Weeks
Min.: 20
Mult.: 1

Gap Fillers / Gap Pads / Sheets Silicone-Free Gap Filler Non-standard Silicone 4 W/m-K Gray (Light Gray) - 65 C + 150 C 229 mm 229 mm 1.25 mm 30 psi UL 94 V-0 SF4 Bulk