Thermal Interface Products

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Tflex™ HD7.5 Thermal Gap Filler

Laird Tflex™ HD7.5 Thermal Gap Filler is a soft silicone material that offers high deflection and 7.5W/mK thermal conductivity. The HD7.5 series is designed to provide superior pressure vs. deflection characteristics. The material offers minimal stress on components during application while maintaining low thermal resistance. Additional features include low outgassing and oil bleeding, 3.4g/cc density, and -40°C to +150°C temperature range. Laird Tflex HD7.5 Thermal Gap Filler is available in 18" x 18" and 9" x 9" standard sheet sizes with thicknesses ranging from 1mm to 5mm in 0.25mm increments.

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (USD) Filter the results in the table by unit price based on your quantity.	Qty.	Product	Type	Package/Case	Thermal Conductivity	Color	Minimum Operating Temperature	Maximum Operating Temperature	Length	Width	Thickness	Series	Packaging
Thermal Interface Products 9x9IN, Tflex HD7.5,1.75 A18444-07 Laird 1: $234.30 7In Stock	Mfr. Part No. A18444-07 Mouser Part No 739-A18444-07	Laird	Thermal Interface Products 9x9IN, Tflex HD7.5,1.75 Learn More about Laird tflex hd7 5 thermal gap filler	Datasheet	7In Stock	$234.30 $220.22 $202.79 View Quote	Min.: 1 Mult.: 1	Gap Fillers / Gap Pads / Sheets	Gap Filler Pad	Non-standard	7.5 W/m-K	Gray	- 50 C	+ 125 C	9 in	9 in	1.75 mm	Tflex	Bulk
Thermal Interface Products 9x9IN, Tflex HD7.5,3.50 A18444-14 Laird 1: $422.72 4In Stock	Mfr. Part No. A18444-14 Mouser Part No 739-A18444-14	Laird	Thermal Interface Products 9x9IN, Tflex HD7.5,3.50 Learn More about Laird tflex hd7 5 thermal gap filler	Datasheet	4In Stock	$422.72 $401.23	Min.: 1 Mult.: 1	Gap Fillers / Gap Pads / Sheets	Gap Filler Pad	Non-standard	7.5 W/m-K	Gray	- 50 C	+ 125 C	9 in	9 in	3.5 mm	Tflex	Bulk
Thermal Interface Products 9x9IN, Tflex HD7.5,5.00 A18444-20 Laird 1: $563.49 4In Stock	Mfr. Part No. A18444-20 Mouser Part No 739-A18444-20	Laird	Thermal Interface Products 9x9IN, Tflex HD7.5,5.00 Learn More about Laird tflex hd7 5 thermal gap filler	Datasheet	4In Stock	$563.49 $546.10	Min.: 1 Mult.: 1	Gap Fillers / Gap Pads / Sheets	Gap Filler Pad	Non-standard	7.5 W/m-K	Gray	- 50 C	+ 125 C	9 in	9 in	5 mm	Tflex	Bulk
Thermal Interface Products 9x9IN, Tflex HD7.5,1.50 A18444-06 Laird 1: $211.88 119In Stock	Mfr. Part No. A18444-06 Mouser Part No 739-A18444-06	Laird	Thermal Interface Products 9x9IN, Tflex HD7.5,1.50 Learn More about Laird tflex hd7 5 thermal gap filler	Datasheet	119In Stock	$211.88 $189.34 $180.30 $173.75	Min.: 1 Mult.: 1	Gap Fillers / Gap Pads / Sheets	Gap Filler Pad	Non-standard	7.5 W/m-K	Gray	- 50 C	+ 125 C	9 in	9 in	1.5 mm	Tflex	Bulk
Thermal Interface Products 9x9IN, Tflex HD7.5,1.00 A18444-04 Laird 1: $158.24 94In Stock 218Expected 02/11/2026	Mfr. Part No. A18444-04 Mouser Part No 739-A18444-04	Laird	Thermal Interface Products 9x9IN, Tflex HD7.5,1.00 Learn More about Laird tflex hd7 5 thermal gap filler	Datasheet	94In Stock 218Expected 02/11/2026	$158.24 $141.41 $134.67 $129.78	Min.: 1 Mult.: 1	Gap Fillers / Gap Pads / Sheets	Gap Filler Pad	Non-standard	7.5 W/m-K	Gray	- 50 C	+ 125 C	9 in	9 in	1 mm	Tflex	Bulk
Thermal Interface Products 9x9IN, Tflex HD7.5,1.25 A18444-05 Laird 1: $188.56 55In Stock	Mfr. Part No. A18444-05 Mouser Part No 739-A18444-05	Laird	Thermal Interface Products 9x9IN, Tflex HD7.5,1.25 Learn More about Laird tflex hd7 5 thermal gap filler	Datasheet	55In Stock	$188.56 $168.46 $153.36 View Quote	Min.: 1 Mult.: 1	Gap Fillers / Gap Pads / Sheets	Gap Filler Pad	Non-standard	7.5 W/m-K	Gray	- 50 C	+ 125 C	9 in	9 in	1.25 mm	Tflex	Bulk
Thermal Interface Products 9x9IN, Tflex HD7.5,2.00 A18444-08 Laird 1: $270.71 18In Stock 50Expected 21/12/2026	Mfr. Part No. A18444-08 Mouser Part No 739-A18444-08	Laird	Thermal Interface Products 9x9IN, Tflex HD7.5,2.00 Learn More about Laird tflex hd7 5 thermal gap filler	Datasheet	18In Stock 50Expected 21/12/2026	$270.71 $246.06 $225.38 View Quote	Min.: 1 Mult.: 1	Gap Fillers / Gap Pads / Sheets	Gap Filler Pad	Non-standard	7.5 W/m-K	Gray	- 50 C	+ 125 C	9 in	9 in	2 mm	Tflex	Bulk
Thermal Interface Products 9x9IN, Tflex HD7.5,2.25 A18444-09 Laird 1: $294.24 47In Stock	Mfr. Part No. A18444-09 Mouser Part No 739-A18444-09	Laird	Thermal Interface Products 9x9IN, Tflex HD7.5,2.25 Learn More about Laird tflex hd7 5 thermal gap filler	Datasheet	47In Stock	$294.24 $271.92	Min.: 1 Mult.: 1	Gap Fillers / Gap Pads / Sheets	Gap Filler Pad	Non-standard	7.5 W/m-K	Gray	- 50 C	+ 125 C	9 in	9 in	2.25 mm	Tflex	Bulk
Thermal Interface Products 9x9IN, Tflex HD7.5,2.50 A18444-10 Laird 1: $319.83 8In Stock	Mfr. Part No. A18444-10 Mouser Part No 739-A18444-10	Laird	Thermal Interface Products 9x9IN, Tflex HD7.5,2.50 Learn More about Laird tflex hd7 5 thermal gap filler	Datasheet	8In Stock	$319.83 $297.76	Min.: 1 Mult.: 1	Gap Fillers / Gap Pads / Sheets	Gap Filler Pad	Non-standard	7.5 W/m-K	Gray	- 50 C	+ 125 C	9 in	9 in	2.5 mm	Tflex	Bulk
Thermal Interface Products 9x9IN, Tflex HD7.5,3.00 A18444-12 Laird 1: $366.28 19In Stock	Mfr. Part No. A18444-12 Mouser Part No 739-A18444-12	Laird	Thermal Interface Products 9x9IN, Tflex HD7.5,3.00 Learn More about Laird tflex hd7 5 thermal gap filler	Datasheet	19In Stock	$366.28 $349.48	Min.: 1 Mult.: 1	Gap Fillers / Gap Pads / Sheets	Gap Filler Pad	Non-standard	7.5 W/m-K	Gray	- 50 C	+ 125 C	9 in	9 in	3 mm	Tflex	Bulk
Thermal Interface Products 9x9IN, Tflex HD7.5,3.25 A18444-13 Laird 1: $395.43 3In Stock	Mfr. Part No. A18444-13 Mouser Part No 739-A18444-13	Laird	Thermal Interface Products 9x9IN, Tflex HD7.5,3.25 Learn More about Laird tflex hd7 5 thermal gap filler		3In Stock	$395.43 $375.33	Min.: 1 Mult.: 1	Gap Fillers / Gap Pads / Sheets	Gap Filler Pad	Non-standard	7.5 W/m-K	Gray	- 50 C	+ 125 C	9 in	9 in	3.25 mm	Tflex	Bulk
Thermal Interface Products 18x18IN, Tflex HD7.5,1.00 A18443-04 Laird 4: $624.83 Non-Stocked Lead-Time 8 Weeks	Mfr. Part No. A18443-04 Mouser Part No 739-A18443-04	Laird	Thermal Interface Products 18x18IN, Tflex HD7.5,1.00 Learn More about Laird tflex hd7 5 thermal gap filler	Datasheet	Non-Stocked Lead-Time 8 Weeks	$624.83 $599.06	Min.: 4 Mult.: 1	Gap Fillers / Gap Pads / Sheets	Gap Filler Pad	Non-standard	7.5 W/m-K	Gray	- 50 C	+ 125 C	1.5 ft	1.5 ft	1 mm	Tflex	Bulk
Thermal Interface Products 18x18IN, Tflex HD7.5,1.25 A18443-05 Laird 4: $737.96 Non-Stocked Lead-Time 6 Weeks	Mfr. Part No. A18443-05 Mouser Part No 739-A18443-05	Laird	Thermal Interface Products 18x18IN, Tflex HD7.5,1.25 Learn More about Laird tflex hd7 5 thermal gap filler		Non-Stocked Lead-Time 6 Weeks	$737.96 $707.53	Min.: 4 Mult.: 1	Gap Fillers / Gap Pads / Sheets	Gap Filler Pad	Non-standard	7.5 W/m-K	Gray	- 50 C	+ 125 C	1.5 ft	1.5 ft	1.25 mm	Tflex	Bulk
Thermal Interface Products 18x18IN, Tflex HD7.5,1.50 A18443-06 Laird 4: $841.16 Non-Stocked Lead-Time 8 Weeks	Mfr. Part No. A18443-06 Mouser Part No 739-A18443-06	Laird	Thermal Interface Products 18x18IN, Tflex HD7.5,1.50 Learn More about Laird tflex hd7 5 thermal gap filler		Non-Stocked Lead-Time 8 Weeks	$841.16 $816.22	Min.: 4 Mult.: 1	Gap Fillers / Gap Pads / Sheets	Gap Filler Pad	Non-standard	7.5 W/m-K	Gray	- 50 C	+ 125 C	1.5 ft	1.5 ft	1.5 mm	Tflex	Bulk
Thermal Interface Products 18x18IN, Tflex HD7.5,1.75 A18443-07 Laird 4: $969.85 Non-Stocked Lead-Time 6 Weeks	Mfr. Part No. A18443-07 Mouser Part No 739-A18443-07	Laird	Thermal Interface Products 18x18IN, Tflex HD7.5,1.75 Learn More about Laird tflex hd7 5 thermal gap filler		Non-Stocked Lead-Time 6 Weeks	$969.85 $938.07	Min.: 4 Mult.: 1	Gap Fillers / Gap Pads / Sheets	Gap Filler Pad	Non-standard	7.5 W/m-K	Gray	- 50 C	+ 125 C	1.5 ft	1.5 ft	1.75 mm	Tflex	Bulk
Thermal Interface Products 18x18IN, Tflex HD7.5,2.00 A18443-08 Laird 4: $1,083.02 Non-Stocked Lead-Time 8 Weeks	Mfr. Part No. A18443-08 Mouser Part No 739-A18443-08	Laird	Thermal Interface Products 18x18IN, Tflex HD7.5,2.00 Learn More about Laird tflex hd7 5 thermal gap filler	Datasheet	Non-Stocked Lead-Time 8 Weeks	$1,083.02 $1,047.50	Min.: 4 Mult.: 1	Gap Fillers / Gap Pads / Sheets	Gap Filler Pad	Non-standard	7.5 W/m-K	Gray	- 50 C	+ 125 C	1.5 ft	1.5 ft	2 mm	Tflex	Bulk
Thermal Interface Products 18x18IN, Tflex HD7.5,2.25 A18443-09 Laird 4: $1,176.97 Non-Stocked Lead-Time 6 Weeks	Mfr. Part No. A18443-09 Mouser Part No 739-A18443-09	Laird	Thermal Interface Products 18x18IN, Tflex HD7.5,2.25 Learn More about Laird tflex hd7 5 thermal gap filler		Non-Stocked Lead-Time 6 Weeks	$1,176.97 $1,142.08	Min.: 4 Mult.: 1	Gap Fillers / Gap Pads / Sheets	Gap Filler Pad	Non-standard	7.5 W/m-K	Gray	- 50 C	+ 125 C	1.5 ft	1.5 ft	2.25 mm	Tflex	Bulk
Thermal Interface Products 18x18IN, Tflex HD7.5,2.50 A18443-10 Laird 4: $1,288.74 Non-Stocked Lead-Time 8 Weeks	Mfr. Part No. A18443-10 Mouser Part No 739-A18443-10	Laird	Thermal Interface Products 18x18IN, Tflex HD7.5,2.50 Learn More about Laird tflex hd7 5 thermal gap filler		Non-Stocked Lead-Time 8 Weeks	$1,288.74 Quote Quote	Min.: 4 Mult.: 1	Gap Fillers / Gap Pads / Sheets	Gap Filler Pad	Non-standard	7.5 W/m-K	Gray	- 50 C	+ 125 C	1.5 ft	1.5 ft	2.5 mm	Tflex	Bulk
Thermal Interface Products 18x18IN, Tflex HD7.5,2.75 A18443-11 Laird 4: $1,400.66 Non-Stocked Lead-Time 6 Weeks	Mfr. Part No. A18443-11 Mouser Part No 739-A18443-11	Laird	Thermal Interface Products 18x18IN, Tflex HD7.5,2.75 Learn More about Laird tflex hd7 5 thermal gap filler		Non-Stocked Lead-Time 6 Weeks	$1,400.66 Quote Quote	Min.: 4 Mult.: 1	Gap Fillers / Gap Pads / Sheets	Gap Filler Pad	Non-standard	7.5 W/m-K	Gray	- 50 C	+ 125 C	1.5 ft	1.5 ft	2.75 mm	Tflex	Bulk
Thermal Interface Products 18x18IN, Tflex HD7.5,3.00 A18443-12 Laird 4: $1,534.71 Non-Stocked Lead-Time 8 Weeks	Mfr. Part No. A18443-12 Mouser Part No 739-A18443-12	Laird	Thermal Interface Products 18x18IN, Tflex HD7.5,3.00 Learn More about Laird tflex hd7 5 thermal gap filler		Non-Stocked Lead-Time 8 Weeks	$1,534.71 Quote Quote	Min.: 4 Mult.: 1	Gap Fillers / Gap Pads / Sheets	Gap Filler Pad	Non-standard	7.5 W/m-K	Gray	- 50 C	+ 125 C	1.5 ft	1.5 ft	3 mm	Tflex	Bulk
Thermal Interface Products 18x18IN, Tflex HD7.5,3.25 A18443-13 Laird 4: $1,624.60 Non-Stocked Lead-Time 6 Weeks	Mfr. Part No. A18443-13 Mouser Part No 739-A18443-13	Laird	Thermal Interface Products 18x18IN, Tflex HD7.5,3.25 Learn More about Laird tflex hd7 5 thermal gap filler		Non-Stocked Lead-Time 6 Weeks	$1,624.60 Quote Quote	Min.: 4 Mult.: 1	Gap Fillers / Gap Pads / Sheets	Gap Filler Pad	Non-standard	7.5 W/m-K	Gray	- 50 C	+ 125 C	1.5 ft	1.5 ft	3.25 mm	Tflex	Bulk
Thermal Interface Products 18x18IN, Tflex HD7.5,3.50 A18443-14 Laird 4: $1,736.64 Non-Stocked Lead-Time 6 Weeks	Mfr. Part No. A18443-14 Mouser Part No 739-A18443-14	Laird	Thermal Interface Products 18x18IN, Tflex HD7.5,3.50 Learn More about Laird tflex hd7 5 thermal gap filler		Non-Stocked Lead-Time 6 Weeks	$1,736.64 Quote Quote	Min.: 4 Mult.: 1	Gap Fillers / Gap Pads / Sheets	Gap Filler Pad	Non-standard	7.5 W/m-K	Gray	- 50 C	+ 125 C	1.5 ft	1.5 ft	3.5 mm	Tflex	Bulk
Thermal Interface Products 18x18IN, Tflex HD7.5,3.75 A18443-15 Laird 4: $1,848.35 Non-Stocked Lead-Time 6 Weeks	Mfr. Part No. A18443-15 Mouser Part No 739-A18443-15	Laird	Thermal Interface Products 18x18IN, Tflex HD7.5,3.75 Learn More about Laird tflex hd7 5 thermal gap filler		Non-Stocked Lead-Time 6 Weeks	$1,848.35 Quote Quote	Min.: 4 Mult.: 1	Gap Fillers / Gap Pads / Sheets	Gap Filler Pad	Non-standard	7.5 W/m-K	Gray	- 50 C	+ 125 C	1.5 ft	1.5 ft	3.75 mm	Tflex	Bulk
Thermal Interface Products 18x18IN, Tflex HD7.5,4.00 A18443-16 Laird 4: $1,992.74 Non-Stocked Lead-Time 8 Weeks	Mfr. Part No. A18443-16 Mouser Part No 739-A18443-16	Laird	Thermal Interface Products 18x18IN, Tflex HD7.5,4.00 Learn More about Laird tflex hd7 5 thermal gap filler		Non-Stocked Lead-Time 8 Weeks	$1,992.74 Quote Quote	Min.: 4 Mult.: 1	Gap Fillers / Gap Pads / Sheets	Gap Filler Pad	Non-standard	7.5 W/m-K	Gray	- 50 C	+ 125 C	1.5 ft	1.5 ft	4 mm	Tflex	Bulk
Thermal Interface Products 18x18IN, Tflex HD7.5,4.25 A18443-17 Laird 4: $2,072.29 Non-Stocked Lead-Time 6 Weeks	Mfr. Part No. A18443-17 Mouser Part No 739-A18443-17	Laird	Thermal Interface Products 18x18IN, Tflex HD7.5,4.25 Learn More about Laird tflex hd7 5 thermal gap filler		Non-Stocked Lead-Time 6 Weeks	$2,072.29 Quote Quote	Min.: 4 Mult.: 1	Gap Fillers / Gap Pads / Sheets	Gap Filler Pad	Non-standard	7.5 W/m-K	Gray	- 50 C	+ 125 C	1.5 ft	1.5 ft	4.25 mm	Tflex	Bulk

Tflex™ HD7.5 Thermal Gap Filler

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Tflex™ HD7.5 Thermal Gap Filler

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