Thermal Interface Products – Mouser United Kingdom

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Tflex SF7 Thermal Gap Fillers

Laird Tflex SF7 Thermal Gap Fillers are innovative, high-performing thermal materials with silicone-free construction. The silicone-free design delivers products with excellent deflection properties, minimizing pressure on components during deflection. A minimum pressure is required to achieve the lowest possible thermal resistance. These fillers offer a 0.5mm to 4mm thickness range, 7.8W/mK thermal conductivity, and 5 x 10^13 volume resistivity. Laird Tflex SF7 Thermal Gap Fillers are ideal for datacom systems, optical modules, cameras, and automotive electronics.

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (GBP) Filter the results in the table by unit price based on your quantity.	Qty.	Product	Type	Package/Case	Material	Thermal Conductivity	Color	Minimum Operating Temperature	Maximum Operating Temperature	Length	Width	Thickness	Tensile Strength	Flammability Rating	Series	Packaging
Thermal Interface Products Tflex SF7 4.00 229x229mm A18843-16 Laird 1: £206.98 64In Stock	Mfr. Part No. A18843-16 Mouser Part No 739-A18843-16	Laird	Thermal Interface Products Tflex SF7 4.00 229x229mm Learn More about Laird tflex sf7 thermal gap fillers	Datasheet	64In Stock	£206.98 £206.97 £186.86 Quote Quote	Min.: 1 Mult.: 1	Gap Fillers / Gap Pads / Sheets	Silicone-Free	Non-standard	Silicone	7.8 W/m-K	Gray (Dark Gray)	- 65 C	+ 150 C	229 mm	229 mm	4 mm	30 psi	UL 94 V-0	SF7	Bulk
Thermal Interface Products Tflex SF7 0.50 229x229mm A18843-02 Laird 1: £43.43 151In Stock 259Expected 19/10/2026	Mfr. Part No. A18843-02 Mouser Part No 739-A18843-02	Laird	Thermal Interface Products Tflex SF7 0.50 229x229mm Learn More about Laird tflex sf7 thermal gap fillers	Datasheet	151In Stock 259Expected 19/10/2026	£43.43 £40.12 £38.26 £37.62 £35.54	Min.: 1 Mult.: 1	Gap Fillers / Gap Pads / Sheets	Silicone-Free	Non-standard	Silicone	7.8 W/m-K	Gray (Dark Gray)	- 65 C	+ 150 C	229 mm	229 mm	0.5 mm	30 psi	UL 94 V-0	SF7	Bulk
Thermal Interface Products Tflex SF7 1.50 229x229mm A18843-06 Laird 1: £91.05 22In Stock 48Expected 26/10/2026	Mfr. Part No. A18843-06 Mouser Part No 739-A18843-06	Laird	Thermal Interface Products Tflex SF7 1.50 229x229mm Learn More about Laird tflex sf7 thermal gap fillers	Datasheet	22In Stock 48Expected 26/10/2026	£91.05 £83.14 £73.65	Min.: 1 Mult.: 1	Gap Fillers / Gap Pads / Sheets	Silicone-Free	Non-standard	Silicone	7.8 W/m-K	Gray (Dark Gray)	- 65 C	+ 150 C	229 mm	229 mm	1.5 mm	30 psi	UL 94 V-0	SF7	Bulk
Thermal Interface Products Tflex SF7 2.00 229x229mm A18843-08 Laird 1: £119.76 39In Stock 44Expected 19/10/2026	Mfr. Part No. A18843-08 Mouser Part No 739-A18843-08	Laird	Thermal Interface Products Tflex SF7 2.00 229x229mm Learn More about Laird tflex sf7 thermal gap fillers	Datasheet	39In Stock 44Expected 19/10/2026	£119.76 £105.96 £102.46 £95.32	Min.: 1 Mult.: 1	Gap Fillers / Gap Pads / Sheets	Silicone-Free	Non-standard	Silicone	7.8 W/m-K	Gray (Dark Gray)	- 65 C	+ 150 C	229 mm	229 mm	2 mm	30 psi	UL 94 V-0	SF7	Bulk
Thermal Interface Products Tflex SF7 2.50 229x229mm A18843-10 Laird 1: £136.06 27In Stock	Mfr. Part No. A18843-10 Mouser Part No 739-A18843-10	Laird	Thermal Interface Products Tflex SF7 2.50 229x229mm Learn More about Laird tflex sf7 thermal gap fillers	Datasheet	27In Stock	£136.06 £124.00 Quote Quote	Min.: 1 Mult.: 1	Gap Fillers / Gap Pads / Sheets	Silicone-Free	Non-standard	Silicone	7.8 W/m-K	Gray (Dark Gray)	- 65 C	+ 150 C	229 mm	229 mm	2.5 mm	30 psi	UL 94 V-0	SF7	Bulk
Thermal Interface Products Tflex SF7 3.00 229x229mm A18843-12 Laird 1: £155.47 15In Stock	Mfr. Part No. A18843-12 Mouser Part No 739-A18843-12	Laird	Thermal Interface Products Tflex SF7 3.00 229x229mm Learn More about Laird tflex sf7 thermal gap fillers	Datasheet	15In Stock	£155.47 £145.54 Quote Quote	Min.: 1 Mult.: 1	Gap Fillers / Gap Pads / Sheets	Silicone-Free	Non-standard	Silicone	7.8 W/m-K	Gray (Dark Gray)	- 65 C	+ 150 C	229 mm	229 mm	3 mm	30 psi	UL 94 V-0	SF7	Bulk
Thermal Interface Products Tflex SF7 3.50 229x229mm A18843-14 Laird 1: £180.01 9In Stock	Mfr. Part No. A18843-14 Mouser Part No 739-A18843-14	Laird	Thermal Interface Products Tflex SF7 3.50 229x229mm Learn More about Laird tflex sf7 thermal gap fillers	Datasheet	9In Stock	£180.01 £167.07 Quote Quote	Min.: 1 Mult.: 1	Gap Fillers / Gap Pads / Sheets	Silicone-Free	Non-standard	Silicone	7.8 W/m-K	Gray (Dark Gray)	- 65 C	+ 150 C	229 mm	229 mm	3.5 mm	30 psi	UL 94 V-0	SF7	Bulk
Thermal Interface Products Tflex SF7 1.00 229x229mm A18843-04 Laird 1: £65.67 128On Order	Mfr. Part No. A18843-04 Mouser Part No 739-A18843-04	Laird	Thermal Interface Products Tflex SF7 1.00 229x229mm Learn More about Laird tflex sf7 thermal gap fillers	Datasheet	128On Order On Order Ship Dates Mfr. No: A18843-04 Stock: 0 On Order: 69 Expected 26/10/2026 59 Expected 30/11/2026 Factory Lead Time: 9 Weeks	£65.67 £59.55 £59.40 £54.93	Min.: 1 Mult.: 1	Gap Fillers / Gap Pads / Sheets	Silicone-Free	Non-standard	Silicone	7.8 W/m-K	Gray (Dark Gray)	- 65 C	+ 150 C	229 mm	229 mm	1 mm	30 psi	UL 94 V-0	SF7	Bulk
Thermal Interface Products Tflex SF7 0.50 457x457mm A18842-02 Laird 10: £183.54 Non-Stocked Lead-Time 9 Weeks	Mfr. Part No. A18842-02 Mouser Part No 739-A18842-02	Laird	Thermal Interface Products Tflex SF7 0.50 457x457mm Learn More about Laird tflex sf7 thermal gap fillers	Datasheet	Non-Stocked Lead-Time 9 Weeks	£183.54 £179.99 £179.41 View Quote	Min.: 10 Mult.: 1	Gap Fillers / Gap Pads / Sheets	Silicone-Free	Non-standard	Silicone	7.8 W/m-K	Gray (Dark Gray)	- 65 C	+ 150 C	457 mm	457 mm	0.5 mm	30 psi	UL 94 V-0	SF7	Bulk
Thermal Interface Products Tflex SF7 0.75 457x457mm A18842-03 Laird 10: £232.52 Non-Stocked Lead-Time 7 Weeks	Mfr. Part No. A18842-03 Mouser Part No 739-A18842-03	Laird	Thermal Interface Products Tflex SF7 0.75 457x457mm Learn More about Laird tflex sf7 thermal gap fillers	Datasheet	Non-Stocked Lead-Time 7 Weeks	£232.52 £227.74	Min.: 10 Mult.: 1	Gap Fillers / Gap Pads / Sheets	Silicone-Free	Non-standard	Silicone	7.8 W/m-K	Gray (Dark Gray)	- 65 C	+ 150 C	457 mm	457 mm	0.75 mm	30 psi	UL 94 V-0	SF7	Bulk
Thermal Interface Products Tflex SF7 1.00 457x457mm A18842-04 Laird 10: £293.15 Non-Stocked Lead-Time 9 Weeks	Mfr. Part No. A18842-04 Mouser Part No 739-A18842-04	Laird	Thermal Interface Products Tflex SF7 1.00 457x457mm Learn More about Laird tflex sf7 thermal gap fillers	Datasheet	Non-Stocked Lead-Time 9 Weeks	£293.15 £287.35	Min.: 10 Mult.: 1	Gap Fillers / Gap Pads / Sheets	Silicone-Free	Non-standard	Silicone	7.8 W/m-K	Gray (Dark Gray)	- 65 C	+ 150 C	457 mm	457 mm	1 mm	30 psi	UL 94 V-0	SF7	Bulk
Thermal Interface Products Tflex SF7 1.25 457x457mm A18842-05 Laird 10: £345.47 Non-Stocked Lead-Time 7 Weeks	Mfr. Part No. A18842-05 Mouser Part No 739-A18842-05	Laird	Thermal Interface Products Tflex SF7 1.25 457x457mm Learn More about Laird tflex sf7 thermal gap fillers	Datasheet	Non-Stocked Lead-Time 7 Weeks	£345.47	Min.: 10 Mult.: 1	Gap Fillers / Gap Pads / Sheets	Silicone-Free	Non-standard	Silicone	7.8 W/m-K	Gray (Dark Gray)	- 65 C	+ 150 C	457 mm	457 mm	1.25 mm	30 psi	UL 94 V-0	SF7	Bulk
Thermal Interface Products Tflex SF7 1.50 457x457mm A18842-06 Laird 10: £399.00 Non-Stocked Lead-Time 7 Weeks	Mfr. Part No. A18842-06 Mouser Part No 739-A18842-06	Laird	Thermal Interface Products Tflex SF7 1.50 457x457mm Learn More about Laird tflex sf7 thermal gap fillers	Datasheet	Non-Stocked Lead-Time 7 Weeks	£399.00	Min.: 10 Mult.: 1	Gap Fillers / Gap Pads / Sheets	Silicone-Free	Non-standard	Silicone	7.8 W/m-K	Gray (Dark Gray)	- 65 C	+ 150 C	457 mm	457 mm	1.5 mm	30 psi	UL 94 V-0	SF7	Bulk
Thermal Interface Products Tflex SF7 1.75 457x457mm A18842-07 Laird 10: £449.85 Non-Stocked Lead-Time 7 Weeks	Mfr. Part No. A18842-07 Mouser Part No 739-A18842-07	Laird	Thermal Interface Products Tflex SF7 1.75 457x457mm Learn More about Laird tflex sf7 thermal gap fillers	Datasheet	Non-Stocked Lead-Time 7 Weeks	£449.85	Min.: 10 Mult.: 1	Gap Fillers / Gap Pads / Sheets	Silicone-Free	Non-standard	Silicone	7.8 W/m-K	Gray (Dark Gray)	- 65 C	+ 150 C	457 mm	457 mm	1.75 mm	30 psi	UL 94 V-0	SF7	Bulk
Thermal Interface Products Tflex SF7 2.00 457x457mm A18842-08 Laird 10: £502.03 Non-Stocked Lead-Time 9 Weeks	Mfr. Part No. A18842-08 Mouser Part No 739-A18842-08	Laird	Thermal Interface Products Tflex SF7 2.00 457x457mm Learn More about Laird tflex sf7 thermal gap fillers	Datasheet	Non-Stocked Lead-Time 9 Weeks	£502.03	Min.: 10 Mult.: 1	Gap Fillers / Gap Pads / Sheets	Silicone-Free	Non-standard	Silicone	7.8 W/m-K	Gray (Dark Gray)	- 65 C	+ 150 C	457 mm	457 mm	2 mm	30 psi	UL 94 V-0	SF7	Bulk
Thermal Interface Products Tflex SF7 2.25 457x457mm A18842-09 Laird 10: £553.86 Non-Stocked Lead-Time 7 Weeks	Mfr. Part No. A18842-09 Mouser Part No 739-A18842-09	Laird	Thermal Interface Products Tflex SF7 2.25 457x457mm Learn More about Laird tflex sf7 thermal gap fillers	Datasheet	Non-Stocked Lead-Time 7 Weeks	£553.86	Min.: 10 Mult.: 1	Gap Fillers / Gap Pads / Sheets	Silicone-Free	Non-standard	Silicone	7.8 W/m-K	Gray (Dark Gray)	- 65 C	+ 150 C	457 mm	457 mm	2.25 mm	30 psi	UL 94 V-0	SF7	Bulk
Thermal Interface Products Tflex SF7 2.50 457x457mm A18842-10 Laird 10: £605.93 Non-Stocked Lead-Time 9 Weeks	Mfr. Part No. A18842-10 Mouser Part No 739-A18842-10	Laird	Thermal Interface Products Tflex SF7 2.50 457x457mm Learn More about Laird tflex sf7 thermal gap fillers	Datasheet	Non-Stocked Lead-Time 9 Weeks	£605.93	Min.: 10 Mult.: 1	Gap Fillers / Gap Pads / Sheets	Silicone-Free	Non-standard	Silicone	7.8 W/m-K	Gray (Dark Gray)	- 65 C	+ 150 C	457 mm	457 mm	2.5 mm	30 psi	UL 94 V-0	SF7	Bulk
Thermal Interface Products Tflex SF7 2.75 457x457mm A18842-11 Laird 10: £657.65 Non-Stocked Lead-Time 7 Weeks	Mfr. Part No. A18842-11 Mouser Part No 739-A18842-11	Laird	Thermal Interface Products Tflex SF7 2.75 457x457mm Learn More about Laird tflex sf7 thermal gap fillers	Datasheet	Non-Stocked Lead-Time 7 Weeks	£657.65	Min.: 10 Mult.: 1	Gap Fillers / Gap Pads / Sheets	Silicone-Free	Non-standard	Silicone	7.8 W/m-K	Gray (Dark Gray)	- 65 C	+ 150 C	457 mm	457 mm	2.75 mm	30 psi	UL 94 V-0	SF7	Bulk
Thermal Interface Products Tflex SF7 3.00 457x457mm A18842-12 Laird 10: £709.41 Non-Stocked Lead-Time 7 Weeks	Mfr. Part No. A18842-12 Mouser Part No 739-A18842-12	Laird	Thermal Interface Products Tflex SF7 3.00 457x457mm Learn More about Laird tflex sf7 thermal gap fillers	Datasheet	Non-Stocked Lead-Time 7 Weeks	£709.41	Min.: 10 Mult.: 1	Gap Fillers / Gap Pads / Sheets	Silicone-Free	Non-standard	Silicone	7.8 W/m-K	Gray (Dark Gray)	- 65 C	+ 150 C	457 mm	457 mm	3 mm	30 psi	UL 94 V-0	SF7	Bulk
Thermal Interface Products Tflex SF7 3.25 457x457mm A18842-13 Laird 10: £763.24 Non-Stocked Lead-Time 7 Weeks	Mfr. Part No. A18842-13 Mouser Part No 739-A18842-13	Laird	Thermal Interface Products Tflex SF7 3.25 457x457mm Learn More about Laird tflex sf7 thermal gap fillers	Datasheet	Non-Stocked Lead-Time 7 Weeks	£763.24	Min.: 10 Mult.: 1	Gap Fillers / Gap Pads / Sheets	Silicone-Free	Non-standard	Silicone	7.8 W/m-K	Gray (Dark Gray)	- 65 C	+ 150 C	457 mm	457 mm	3.25 mm	30 psi	UL 94 V-0	SF7	Bulk
Thermal Interface Products Tflex SF7 3.50 457x457mm A18842-14 Laird 10: £812.87 Non-Stocked Lead-Time 7 Weeks	Mfr. Part No. A18842-14 Mouser Part No 739-A18842-14	Laird	Thermal Interface Products Tflex SF7 3.50 457x457mm Learn More about Laird tflex sf7 thermal gap fillers	Datasheet	Non-Stocked Lead-Time 7 Weeks	£812.87	Min.: 10 Mult.: 1	Gap Fillers / Gap Pads / Sheets	Silicone-Free	Non-standard	Silicone	7.8 W/m-K	Gray (Dark Gray)	- 65 C	+ 150 C	457 mm	457 mm	3.5 mm	30 psi	UL 94 V-0	SF7	Bulk
Thermal Interface Products Tflex SF7 3.75 457x457mm A18842-15 Laird 10: £864.52 Non-Stocked Lead-Time 7 Weeks	Mfr. Part No. A18842-15 Mouser Part No 739-A18842-15	Laird	Thermal Interface Products Tflex SF7 3.75 457x457mm Learn More about Laird tflex sf7 thermal gap fillers	Datasheet	Non-Stocked Lead-Time 7 Weeks	£864.52	Min.: 10 Mult.: 1	Gap Fillers / Gap Pads / Sheets	Silicone-Free	Non-standard	Silicone	7.8 W/m-K	Gray (Dark Gray)	- 65 C	+ 150 C	457 mm	457 mm	3.75 mm	30 psi	UL 94 V-0	SF7	Bulk
Thermal Interface Products Tflex SF7 4.00 457x457mm A18842-16 Laird 10: £910.36 Non-Stocked Lead-Time 9 Weeks	Mfr. Part No. A18842-16 Mouser Part No 739-A18842-16	Laird	Thermal Interface Products Tflex SF7 4.00 457x457mm Learn More about Laird tflex sf7 thermal gap fillers	Datasheet	Non-Stocked Lead-Time 9 Weeks	£910.36	Min.: 10 Mult.: 1	Gap Fillers / Gap Pads / Sheets	Silicone-Free	Non-standard	Silicone	7.8 W/m-K	Gray (Dark Gray)	- 65 C	+ 150 C	457 mm	457 mm	4 mm	30 psi	UL 94 V-0	SF7	Bulk
Thermal Interface Products Tflex SF7 0.75 229x229mm A18843-03 Laird 20: £51.44 Non-Stocked Lead-Time 6 Weeks	Mfr. Part No. A18843-03 Mouser Part No 739-A18843-03	Laird	Thermal Interface Products Tflex SF7 0.75 229x229mm Learn More about Laird tflex sf7 thermal gap fillers	Datasheet	Non-Stocked Lead-Time 6 Weeks	£51.44 £50.79 £50.28 £49.80 Quote Quote	Min.: 20 Mult.: 1	Gap Fillers / Gap Pads / Sheets	Silicone-Free	Non-standard	Silicone	7.8 W/m-K	Gray (Dark Gray)	- 65 C	+ 150 C	229 mm	229 mm	0.75 mm	30 psi	UL 94 V-0	SF7	Bulk
Thermal Interface Products Tflex SF7 1.25 229x229mm A18843-05 Laird 20: £75.64 Non-Stocked Lead-Time 7 Weeks	Mfr. Part No. A18843-05 Mouser Part No 739-A18843-05	Laird	Thermal Interface Products Tflex SF7 1.25 229x229mm Learn More about Laird tflex sf7 thermal gap fillers	Datasheet	Non-Stocked Lead-Time 7 Weeks	£75.64 £74.37 £73.65 £72.93 Quote Quote	Min.: 20 Mult.: 1	Gap Fillers / Gap Pads / Sheets	Silicone-Free	Non-standard	Silicone	7.8 W/m-K	Gray (Dark Gray)	- 65 C	+ 150 C	229 mm	229 mm	1.25 mm	30 psi	UL 94 V-0	SF7	Bulk

Tflex SF7 Thermal Gap Fillers

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