Thermal Interface Products

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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 (CAD) 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: $396.99 64In Stock	Mfr. Part # A18843-16 Mouser Part # 739-A18843-16	Laird	Thermal Interface Products Tflex SF7 4.00 229x229mm Learn More about Laird tflex sf7 thermal gap fillers	Datasheet	64In Stock	$396.99 $396.98 $358.39 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: $83.30 268In Stock 142Expected 2026-10-28	Mfr. Part # A18843-02 Mouser Part # 739-A18843-02	Laird	Thermal Interface Products Tflex SF7 0.50 229x229mm Learn More about Laird tflex sf7 thermal gap fillers	Datasheet	268In Stock 142Expected 2026-10-28	$83.30 $76.95 $73.40 $72.16 $68.17	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: $174.63 22In Stock 48Expected 2026-11-02	Mfr. Part # A18843-06 Mouser Part # 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 2026-11-02	$174.63 $159.47 $141.03	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: $229.69 83In Stock	Mfr. Part # A18843-08 Mouser Part # 739-A18843-08	Laird	Thermal Interface Products Tflex SF7 2.00 229x229mm Learn More about Laird tflex sf7 thermal gap fillers	Datasheet	83In Stock	$229.69 $203.23 $196.53 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 mm	30 psi	UL 94 V-0	SF7	Bulk
Thermal Interface Products Tflex SF7 2.50 229x229mm A18843-10 Laird 1: $260.96 26In Stock	Mfr. Part # A18843-10 Mouser Part # 739-A18843-10	Laird	Thermal Interface Products Tflex SF7 2.50 229x229mm Learn More about Laird tflex sf7 thermal gap fillers	Datasheet	26In Stock	$260.96 $237.83 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: $298.20 15In Stock	Mfr. Part # A18843-12 Mouser Part # 739-A18843-12	Laird	Thermal Interface Products Tflex SF7 3.00 229x229mm Learn More about Laird tflex sf7 thermal gap fillers	Datasheet	15In Stock	$298.20 $279.14 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: $345.27 9In Stock	Mfr. Part # A18843-14 Mouser Part # 739-A18843-14	Laird	Thermal Interface Products Tflex SF7 3.50 229x229mm Learn More about Laird tflex sf7 thermal gap fillers	Datasheet	9In Stock	$345.27 $320.44 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: $125.96 67In Stock 59Expected 2026-12-07	Mfr. Part # A18843-04 Mouser Part # 739-A18843-04	Laird	Thermal Interface Products Tflex SF7 1.00 229x229mm Learn More about Laird tflex sf7 thermal gap fillers	Datasheet	67In Stock 59Expected 2026-12-07	$125.96 $114.21 $113.93 $105.35	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: $352.02 Non-Stocked Lead-Time 9 Weeks	Mfr. Part # A18842-02 Mouser Part # 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	$352.02 $345.21 $344.12 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: $445.98 Non-Stocked Lead-Time 7 Weeks	Mfr. Part # A18842-03 Mouser Part # 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	$445.98 $436.81	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: $562.26 Non-Stocked Lead-Time 9 Weeks	Mfr. Part # A18842-04 Mouser Part # 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	$562.26 $551.13	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: $662.62 Non-Stocked Lead-Time 7 Weeks	Mfr. Part # A18842-05 Mouser Part # 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	$662.62	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: $765.29 Non-Stocked Lead-Time 7 Weeks	Mfr. Part # A18842-06 Mouser Part # 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	$765.29	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: $862.80 Non-Stocked Lead-Time 7 Weeks	Mfr. Part # A18842-07 Mouser Part # 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	$862.80	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: $962.90 Non-Stocked Lead-Time 9 Weeks	Mfr. Part # A18842-08 Mouser Part # 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	$962.90	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: $1,062.30 Non-Stocked Lead-Time 7 Weeks	Mfr. Part # A18842-09 Mouser Part # 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	$1,062.30	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: $1,162.18 Non-Stocked Lead-Time 9 Weeks	Mfr. Part # A18842-10 Mouser Part # 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	$1,162.18	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: $1,261.37 Non-Stocked Lead-Time 7 Weeks	Mfr. Part # A18842-11 Mouser Part # 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	$1,261.37	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: $1,360.66 Non-Stocked Lead-Time 7 Weeks	Mfr. Part # A18842-12 Mouser Part # 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	$1,360.66	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: $1,463.89 Non-Stocked Lead-Time 7 Weeks	Mfr. Part # A18842-13 Mouser Part # 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	$1,463.89	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: $1,559.09 Non-Stocked Lead-Time 7 Weeks	Mfr. Part # A18842-14 Mouser Part # 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	$1,559.09	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: $1,658.16 Non-Stocked Lead-Time 7 Weeks	Mfr. Part # A18842-15 Mouser Part # 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	$1,658.16	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: $1,746.07 Non-Stocked Lead-Time 9 Weeks	Mfr. Part # A18842-16 Mouser Part # 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	$1,746.07	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: $98.65 Non-Stocked Lead-Time 6 Weeks	Mfr. Part # A18843-03 Mouser Part # 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	$98.65 $97.42 $96.44 $95.53 View 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: $145.07 Non-Stocked Lead-Time 7 Weeks	Mfr. Part # A18843-05 Mouser Part # 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	$145.07 $142.65 $141.25 $139.88 View 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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