Thermal Interface Products

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Tflex™ HR6.5 Thermal Gap Filler

Laird Tflex™ HR6.5 Thermal Gap Filler is a thermal interface material with >6W/mK thermal conductivity and high recovery properties. This filler is designed to withstand cyclic gap changes caused by shock, vibration, or warpage, providing consistent thermal performance throughout the part's life. HR6.5 material provides minimal stress on components, is easily assembled, and, in many cases, can be reused after rework due to its good rebound capability. Laird Tflex HR6.5 Thermal Gap Filler offers a 1mm to 5mm thickness range, ceramic-filled silicon sheet construction, a UL 94V-0 flammability rating, and an operating temperature range of -50°C to +150°C.

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (CLP) Filter the results in the table by unit price based on your quantity.	Qty.	Product	Material	Thermal Conductivity	Breakdown Voltage	Color	Minimum Operating Temperature	Maximum Operating Temperature	Length	Width	Thickness	Flammability Rating	Series	Packaging
Thermal Interface Products Thickness 3mm 457x457mm Grey A18906-12 Laird 1: $1.599.828 1In Stock New Product	Mfr. Part # A18906-12 Mouser Part # 739-A18906-12 New Product	Laird	Thermal Interface Products Thickness 3mm 457x457mm Grey Learn More about Laird tflex hr6 5 thermal gap filler	Datasheet	1In Stock	$1.599.828 Quote Quote	Min.: 1 Mult.: 1	Gap Fillers / Gap Pads / Sheets	Ceramic Filled Silicone	6.2 W/mK	7 kV	Gray	- 50 C	+ 150 C	457 mm	457 mm	3 mm	UL 94 V-0	HR6.5	Bulk
Thermal Interface Products Thickness 4mm 457x457mm Grey A18906-16 Laird 1: $2.073.425 1In Stock New Product	Mfr. Part # A18906-16 Mouser Part # 739-A18906-16 New Product	Laird	Thermal Interface Products Thickness 4mm 457x457mm Grey Learn More about Laird tflex hr6 5 thermal gap filler	Datasheet	1In Stock	$2.073.425 Quote Quote	Min.: 1 Mult.: 1	Gap Fillers / Gap Pads / Sheets	Ceramic Filled Silicone	6.2 W/mK	7 kV	Gray	- 50 C	+ 150 C	457 mm	457 mm	4 mm	UL 94 V-0	HR6.5	Bulk
Thermal Interface Products Thickness 2mm 229x229mm Grey A18909-08 Laird 1: $306.853 6In Stock New Product	Mfr. Part # A18909-08 Mouser Part # 739-A18909-08 New Product	Laird	Thermal Interface Products Thickness 2mm 229x229mm Grey Learn More about Laird tflex hr6 5 thermal gap filler	Datasheet	6In Stock	$306.853 $278.872 $256.690 View Quote	Min.: 1 Mult.: 1	Gap Fillers / Gap Pads / Sheets	Ceramic Filled Silicone	6.2 W/mK	7 kV	Gray	- 50 C	+ 150 C	229 mm	229 mm	2 mm	UL 94 V-0	HR6.5	Bulk
Thermal Interface Products Thickness 2.50mm 457x457mm Grey A18906-10 Laird 1: $1.363.018 1In Stock New Product	Mfr. Part # A18906-10 Mouser Part # 739-A18906-10 New Product	Laird	Thermal Interface Products Thickness 2.50mm 457x457mm Grey Learn More about Laird tflex hr6 5 thermal gap filler	Datasheet	1In Stock	$1.363.018 $1.285.331	Min.: 1 Mult.: 1	Gap Fillers / Gap Pads / Sheets	Ceramic Filled Silicone	6.2 W/mK	7 kV	Gray	- 50 C	+ 150 C	457 mm	457 mm	2.5 mm	UL 94 V-0	HR6.5	Bulk
Thermal Interface Products Thickness 1.25mm 229x229mm Grey A18909-05 Laird 1: $214.845 10Expected 12/7/2026 New Product	Mfr. Part # A18909-05 Mouser Part # 739-A18909-05 New Product	Laird	Thermal Interface Products Thickness 1.25mm 229x229mm Grey Learn More about Laird tflex hr6 5 thermal gap filler	Datasheet	10Expected 12/7/2026	$214.845 $190.931 $175.585	Min.: 1 Mult.: 1	Gap Fillers / Gap Pads / Sheets	Ceramic Filled Silicone	6.2 W/mK	7 kV	Gray	- 50 C	+ 150 C	229 mm	229 mm	1.25 mm	UL 94 V-0	HR6.5	Bulk
Thermal Interface Products Thickness 1.75mm 229x229mm Grey A18909-07 Laird 1: $275.374 10Expected 12/7/2026 New Product	Mfr. Part # A18909-07 Mouser Part # 739-A18909-07 New Product	Laird	Thermal Interface Products Thickness 1.75mm 229x229mm Grey Learn More about Laird tflex hr6 5 thermal gap filler	Datasheet	10Expected 12/7/2026	$275.374 $249.558 $226.044	Min.: 1 Mult.: 1	Gap Fillers / Gap Pads / Sheets	Ceramic Filled Silicone	6.2 W/mK	7 kV	Gray	- 50 C	+ 150 C	229 mm	229 mm	1.75 mm	UL 94 V-0	HR6.5	Bulk
Thermal Interface Products Thickness 2.25mm 229x229mm Grey A18909-09 Laird 1: $336.599 10Expected 12/7/2026 New Product	Mfr. Part # A18909-09 Mouser Part # 739-A18909-09 New Product	Laird	Thermal Interface Products Thickness 2.25mm 229x229mm Grey Learn More about Laird tflex hr6 5 thermal gap filler	Datasheet	10Expected 12/7/2026	$336.599 $308.151	Min.: 1 Mult.: 1	Gap Fillers / Gap Pads / Sheets	Ceramic Filled Silicone	6.2 W/mK	7 kV	Gray	- 50 C	+ 150 C	229 mm	229 mm	2.25 mm	UL 94 V-0	HR6.5	Bulk
Thermal Interface Products Thickness 2.50mm 229x229mm Grey A18909-10 Laird 1: $366.254 10Expected 12/7/2026 New Product	Mfr. Part # A18909-10 Mouser Part # 739-A18909-10 New Product	Laird	Thermal Interface Products Thickness 2.50mm 229x229mm Grey Learn More about Laird tflex hr6 5 thermal gap filler	Datasheet	10Expected 12/7/2026	$366.254 $337.396	Min.: 1 Mult.: 1	Gap Fillers / Gap Pads / Sheets	Ceramic Filled Silicone	6.2 W/mK	7 kV	Gray	- 50 C	+ 150 C	229 mm	229 mm	2.5 mm	UL 94 V-0	HR6.5	Bulk
Thermal Interface Products Thickness 2.75mm 229x229mm Grey A18909-11 Laird 1: $396.798 10Expected 12/7/2026 New Product	Mfr. Part # A18909-11 Mouser Part # 739-A18909-11 New Product	Laird	Thermal Interface Products Thickness 2.75mm 229x229mm Grey Learn More about Laird tflex hr6 5 thermal gap filler	Datasheet	10Expected 12/7/2026	$396.798 $366.733	Min.: 1 Mult.: 1	Gap Fillers / Gap Pads / Sheets	Ceramic Filled Silicone	6.2 W/mK	7 kV	Gray	- 50 C	+ 150 C	229 mm	229 mm	2.75 mm	UL 94 V-0	HR6.5	Bulk
Thermal Interface Products Thickness 3mm 229x229mm Grey A18909-12 Laird 1: $427.650 10Expected 12/7/2026 New Product	Mfr. Part # A18909-12 Mouser Part # 739-A18909-12 New Product	Laird	Thermal Interface Products Thickness 3mm 229x229mm Grey Learn More about Laird tflex hr6 5 thermal gap filler	Datasheet	10Expected 12/7/2026	$427.650 $396.012	Min.: 1 Mult.: 1	Gap Fillers / Gap Pads / Sheets	Ceramic Filled Silicone	6.2 W/mK	7 kV	Gray	- 50 C	+ 150 C	229 mm	229 mm	3 mm	UL 94 V-0	HR6.5	Bulk
Thermal Interface Products Thickness 3.25mm 229x229mm Grey A18909-13 Laird 1: $458.467 10Expected 12/7/2026 New Product	Mfr. Part # A18909-13 Mouser Part # 739-A18909-13 New Product	Laird	Thermal Interface Products Thickness 3.25mm 229x229mm Grey Learn More about Laird tflex hr6 5 thermal gap filler	Datasheet	10Expected 12/7/2026	$458.467 $425.326	Min.: 1 Mult.: 1	Gap Fillers / Gap Pads / Sheets	Ceramic Filled Silicone	6.2 W/mK	7 kV	Gray	- 50 C	+ 150 C	229 mm	229 mm	3.25 mm	UL 94 V-0	HR6.5	Bulk
Thermal Interface Products Thickness 3.50mm 229x229mm Grey A18909-14 Laird 1: $489.410 10Expected 12/7/2026 New Product	Mfr. Part # A18909-14 Mouser Part # 739-A18909-14 New Product	Laird	Thermal Interface Products Thickness 3.50mm 229x229mm Grey Learn More about Laird tflex hr6 5 thermal gap filler	Datasheet	10Expected 12/7/2026	$489.410 $454.685	Min.: 1 Mult.: 1	Gap Fillers / Gap Pads / Sheets	Ceramic Filled Silicone	6.2 W/mK	7 kV	Gray	- 50 C	+ 150 C	229 mm	229 mm	3.5 mm	UL 94 V-0	HR6.5	Bulk
Thermal Interface Products Thickness 3.75mm 229x229mm Grey A18909-15 Laird 1: $519.920 10Expected 12/7/2026 New Product	Mfr. Part # A18909-15 Mouser Part # 739-A18909-15 New Product	Laird	Thermal Interface Products Thickness 3.75mm 229x229mm Grey Learn More about Laird tflex hr6 5 thermal gap filler	Datasheet	10Expected 12/7/2026	$519.920 $483.942	Min.: 1 Mult.: 1	Gap Fillers / Gap Pads / Sheets	Ceramic Filled Silicone	6.2 W/mK	7 kV	Gray	- 50 C	+ 150 C	229 mm	229 mm	3.75 mm	UL 94 V-0	HR6.5	Bulk
Thermal Interface Products Thickness 4mm 229x229mm Grey A18909-16 Laird 1: $546.761 10Expected 12/7/2026 New Product	Mfr. Part # A18909-16 Mouser Part # 739-A18909-16 New Product	Laird	Thermal Interface Products Thickness 4mm 229x229mm Grey Learn More about Laird tflex hr6 5 thermal gap filler	Datasheet	10Expected 12/7/2026	$546.761 $513.266	Min.: 1 Mult.: 1	Gap Fillers / Gap Pads / Sheets	Ceramic Filled Silicone	6.2 W/mK	7 kV	Gray	- 50 C	+ 150 C	229 mm	229 mm	4 mm	UL 94 V-0	HR6.5	Bulk
Thermal Interface Products Thickness 4.25mm 229x229mm Grey A18909-17 Laird 1: $578.695 10Expected 12/7/2026 New Product	Mfr. Part # A18909-17 Mouser Part # 739-A18909-17 New Product	Laird	Thermal Interface Products Thickness 4.25mm 229x229mm Grey Learn More about Laird tflex hr6 5 thermal gap filler	Datasheet	10Expected 12/7/2026	$578.695 $544.038	Min.: 1 Mult.: 1	Gap Fillers / Gap Pads / Sheets	Ceramic Filled Silicone	6.2 W/mK	7 kV	Gray	- 50 C	+ 150 C	229 mm	229 mm	4.25 mm	UL 94 V-0	HR6.5	Bulk
Thermal Interface Products Thickness 4.50mm 229x229mm Grey A18909-18 Laird 1: $623.776 10Expected 12/7/2026 New Product	Mfr. Part # A18909-18 Mouser Part # 739-A18909-18 New Product	Laird	Thermal Interface Products Thickness 4.50mm 229x229mm Grey Learn More about Laird tflex hr6 5 thermal gap filler	Datasheet	10Expected 12/7/2026	$623.776 $587.559	Min.: 1 Mult.: 1	Gap Fillers / Gap Pads / Sheets	Ceramic Filled Silicone	6.2 W/mK	7 kV	Gray	- 50 C	+ 150 C	229 mm	229 mm	4.5 mm	UL 94 V-0	HR6.5	Bulk
Thermal Interface Products Thickness 4.75mm 229x229mm Grey A18909-19 Laird 1: $659.937 10Expected 12/7/2026 New Product	Mfr. Part # A18909-19 Mouser Part # 739-A18909-19 New Product	Laird	Thermal Interface Products Thickness 4.75mm 229x229mm Grey Learn More about Laird tflex hr6 5 thermal gap filler	Datasheet	10Expected 12/7/2026	$659.937 $622.819	Min.: 1 Mult.: 1	Gap Fillers / Gap Pads / Sheets	Ceramic Filled Silicone	6.2 W/mK	7 kV	Gray	- 50 C	+ 150 C	229 mm	229 mm	4.75 mm	UL 94 V-0	HR6.5	Bulk
Thermal Interface Products Thickness 5mm 229x229mm Grey A18909-20 Laird 1: $709.689 10Expected 12/7/2026 New Product	Mfr. Part # A18909-20 Mouser Part # 739-A18909-20 New Product	Laird	Thermal Interface Products Thickness 5mm 229x229mm Grey Learn More about Laird tflex hr6 5 thermal gap filler	Datasheet	10Expected 12/7/2026	$709.689 $672.651	Min.: 1 Mult.: 1	Gap Fillers / Gap Pads / Sheets	Ceramic Filled Silicone	6.2 W/mK	7 kV	Gray	- 50 C	+ 150 C	229 mm	229 mm	5 mm	UL 94 V-0	HR6.5	Bulk
Thermal Interface Products Thickness 1mm 229x229mm Grey A18909-04 Laird 1: $183.492 10Expected 12/7/2026 New Product	Mfr. Part # A18909-04 Mouser Part # 739-A18909-04 New Product	Laird	Thermal Interface Products Thickness 1mm 229x229mm Grey Learn More about Laird tflex hr6 5 thermal gap filler	Datasheet	10Expected 12/7/2026	$183.492 $161.640 $150.054	Min.: 1 Mult.: 1	Gap Fillers / Gap Pads / Sheets	Ceramic Filled Silicone	6.2 W/mK	7 kV	Gray	- 50 C	+ 150 C	229 mm	229 mm	1 mm	UL 94 V-0	HR6.5	Bulk
Thermal Interface Products Thickness 1.50mm 229x229mm Grey A18909-06 Laird 1: $244.956 5Expected 12/7/2026 New Product	Mfr. Part # A18909-06 Mouser Part # 739-A18909-06 New Product	Laird	Thermal Interface Products Thickness 1.50mm 229x229mm Grey Learn More about Laird tflex hr6 5 thermal gap filler	Datasheet	5Expected 12/7/2026	$244.956 $220.222 $200.900 Quote Quote	Min.: 1 Mult.: 1	Gap Fillers / Gap Pads / Sheets	Ceramic Filled Silicone	6.2 W/mK	7 kV	Gray	- 50 C	+ 150 C	229 mm	229 mm	1.5 mm	UL 94 V-0	HR6.5	Bulk
Thermal Interface Products Thickness 1.50mm 457x457mm Grey A18906-06 Laird 1: $889.672 Lead-Time 8 Weeks New Product	Mfr. Part # A18906-06 Mouser Part # 739-A18906-06 New Product	Laird	Thermal Interface Products Thickness 1.50mm 457x457mm Grey Learn More about Laird tflex hr6 5 thermal gap filler	Datasheet	Lead-Time 8 Weeks	$889.672 $838.963	Min.: 1 Mult.: 1	Gap Fillers / Gap Pads / Sheets	Ceramic Filled Silicone	6.2 W/mK	7 kV	Gray	- 50 C	+ 150 C	457 mm	457 mm	1.5 mm	UL 94 V-0	HR6.5	Bulk
Thermal Interface Products Thickness 2mm 457x457mm Grey A18906-08 Laird 1: $1.126.516 Lead-Time 8 Weeks New Product	Mfr. Part # A18906-08 Mouser Part # 739-A18906-08 New Product	Laird	Thermal Interface Products Thickness 2mm 457x457mm Grey Learn More about Laird tflex hr6 5 thermal gap filler	Datasheet	Lead-Time 8 Weeks	$1.126.516 $1.062.318	Min.: 1 Mult.: 1	Gap Fillers / Gap Pads / Sheets	Ceramic Filled Silicone	6.2 W/mK	7 kV	Gray	- 50 C	+ 150 C	457 mm	457 mm	2 mm	UL 94 V-0	HR6.5	Bulk

Tflex™ HR6.5 Thermal Gap Filler

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