Thermal Interface Products

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Tflex™ RB300 Thermal Gap Filler

Laird Technologies Tflex™ RB300 Thermal Gap Filler is an exceptionally soft gap filler pad with thermal conductivity of 1.2W/mK. This thermal conductivity allows low thermal resistances to be achieved at low pressures. Laird Technologies Tflex RB300 gap filler is specially formulated to minimize the amount of silicone oil bleed in sensitive applications. This thermal gap filler is naturally tacky and requires no additional adhesive coating that can inhibit thermal performance.

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Part #

Thermal Interface Products TFLEX RB330 9X9IN

A18145-03
Laird Technologies
1: $19.02
60In Stock

Mfr. Part No.
A18145-03

Mouser Part No
739-A18145-03

Laird Technologies

Thermal Interface Products TFLEX RB330 9X9IN

Learn More

Datasheet

60In Stock

$19.02

$18.68

$17.28

$15.12

Quote

Min.: 1
Mult.: 1

Gap Fillers / Gap Pads / Sheets

Gap Filler

Non-standard

Ceramic Filled Silicone

1.2 W/mK

Gray

- 25 C

+ 200 C

228.6 mm

0.5 mm to 5.08 mm

UL 94 V-0

Tflex RB300

Bulk

Thermal Interface Products TFLEX RB320 9X9IN

A18145-02
Laird Technologies
1: $17.02
42In Stock

Mfr. Part No.
A18145-02

Mouser Part No
739-A18145-02

Laird Technologies

Thermal Interface Products TFLEX RB320 9X9IN

Learn More

Datasheet

42In Stock

$17.02

$15.59

$14.75

$14.01

View

Min.: 1
Mult.: 1

Gap Fillers / Gap Pads / Sheets

Gap Filler

Non-standard

Ceramic Filled Silicone

1.2 W/mK

Gray

- 25 C

+ 200 C

228.6 mm

0.5 mm to 5.08 mm

UL 94 V-0

Tflex RB300

Bulk

Thermal Interface Products TFLEX RB340 9X9IN

A18145-04
Laird Technologies
1: $20.91
38In Stock

Mfr. Part No.
A18145-04

Mouser Part No
739-A18145-04

Laird Technologies

Thermal Interface Products TFLEX RB340 9X9IN

Learn More

Datasheet

38In Stock

$20.91

$19.70

$18.55

$17.38

View

Min.: 1
Mult.: 1

Gap Fillers / Gap Pads / Sheets

Gap Filler

Non-standard

Ceramic Filled Silicone

1.2 W/mK

Gray

- 25 C

+ 200 C

228.6 mm

0.5 mm to 5.08 mm

UL 94 V-0

Tflex RB300

Bulk

Thermal Interface Products TFLEX RB360 9X9IN

A18145-06
Laird Technologies
1: $42.61
32Expected 03/03/2026

Mfr. Part No.
A18145-06

Mouser Part No
739-A18145-06

Laird Technologies

Thermal Interface Products TFLEX RB360 9X9IN

Learn More

Datasheet

32Expected 03/03/2026

$42.61

$39.29

$36.83

$34.74

Min.: 1
Mult.: 1

Gap Fillers / Gap Pads / Sheets

Gap Filler

Non-standard

Ceramic Filled Silicone

1.2 W/mK

Gray

- 25 C

+ 200 C

228.6 mm

0.5 mm to 5.08 mm

UL 94 V-0

Tflex RB300

Bulk

Thermal Interface Products TFLEX RB380 9X9IN

A18145-08
Laird Technologies
25: $35.49
Non-Stocked Lead-Time 10 Weeks

Mfr. Part No.
A18145-08

Mouser Part No
739-A18145-08

Laird Technologies

Thermal Interface Products TFLEX RB380 9X9IN

Learn More

Datasheet

Non-Stocked Lead-Time 10 Weeks

$35.49

Min.: 25
Mult.: 25

Gap Fillers / Gap Pads / Sheets

Gap Filler

Non-standard

Ceramic Filled Silicone

1.2 W/mK

Gray

- 25 C

+ 200 C

228.6 mm

0.5 mm to 5.08 mm

UL 94 V-0

Tflex RB300

Bulk

Thermal Interface Products TFLEX RB3100 9X9IN

A18145-10
Laird Technologies
21: $46.65
Non-Stocked Lead-Time 10 Weeks

Mfr. Part No.
A18145-10

Mouser Part No
739-A18145-10

Laird Technologies

Thermal Interface Products TFLEX RB3100 9X9IN

Learn More

Datasheet

Non-Stocked Lead-Time 10 Weeks

$46.65

$45.10

Min.: 21
Mult.: 21

Gap Fillers / Gap Pads / Sheets

Gap Filler

Non-standard

Ceramic Filled Silicone

1.2 W/mK

Gray

- 25 C

+ 200 C

228.6 mm

0.5 mm to 5.08 mm

UL 94 V-0

Tflex RB300

Bulk

Thermal Interface Products TFLEX RB3120 9X9IN

A18145-12
Laird Technologies
18: $54.48
Non-Stocked Lead-Time 10 Weeks

Mfr. Part No.
A18145-12

Mouser Part No
739-A18145-12

Laird Technologies

Thermal Interface Products TFLEX RB3120 9X9IN

Learn More

Datasheet

Non-Stocked Lead-Time 10 Weeks

$54.48

$52.40

$51.29

Min.: 18
Mult.: 18

Gap Fillers / Gap Pads / Sheets

Gap Filler

Non-standard

Ceramic Filled Silicone

1.2 W/mK

Gray

- 25 C

+ 200 C

228.6 mm

0.5 mm to 5.08 mm

UL 94 V-0

Tflex RB300

Bulk

Thermal Interface Products TFLEX RB3140 9X9IN

A18145-14
Laird Technologies
15: $64.14
Non-Stocked Lead-Time 10 Weeks

Mfr. Part No.
A18145-14

Mouser Part No
739-A18145-14

Laird Technologies

Thermal Interface Products TFLEX RB3140 9X9IN

Learn More

Datasheet

Non-Stocked Lead-Time 10 Weeks

$64.14

$61.74

$61.20

Min.: 15
Mult.: 15

Gap Fillers / Gap Pads / Sheets

Gap Filler

Non-standard

Ceramic Filled Silicone

1.2 W/mK

Gray

- 25 C

+ 200 C

228.6 mm

0.5 mm to 5.08 mm

UL 94 V-0

Tflex RB300

Bulk

Thermal Interface Products TFLEX RB3160 9X9IN

A18145-16
Laird Technologies
14: $72.48
Non-Stocked Lead-Time 10 Weeks

Mfr. Part No.
A18145-16

Mouser Part No
739-A18145-16

Laird Technologies

Thermal Interface Products TFLEX RB3160 9X9IN

Learn More

Datasheet

Non-Stocked Lead-Time 10 Weeks

$72.48

$69.71

$69.21

$67.40

View

Min.: 14
Mult.: 14

Gap Fillers / Gap Pads / Sheets

Gap Filler

Non-standard

Ceramic Filled Silicone

1.2 W/mK

Gray

- 25 C

+ 200 C

228.6 mm

0.5 mm to 5.08 mm

UL 94 V-0

Tflex RB300

Bulk

Thermal Interface Products TFLEX RB3180 9X9IN

A18145-18
Laird Technologies
12: $81.77
Non-Stocked Lead-Time 10 Weeks

Mfr. Part No.
A18145-18

Mouser Part No
739-A18145-18

Laird Technologies

Thermal Interface Products TFLEX RB3180 9X9IN

Learn More

Datasheet

Non-Stocked Lead-Time 10 Weeks

$81.77

$78.91

$75.97

View

Min.: 12
Mult.: 12

Gap Fillers / Gap Pads / Sheets

Gap Filler

Non-standard

Ceramic Filled Silicone

1.2 W/mK

Gray

- 25 C

+ 200 C

228.6 mm

0.5 mm to 5.08 mm

UL 94 V-0

Tflex RB300

Bulk

Thermal Interface Products TFLEX RB3200 9X9IN

A18145-20
Laird Technologies
11: $99.05
Non-Stocked Lead-Time 10 Weeks

Mfr. Part No.
A18145-20

Mouser Part No
739-A18145-20

Laird Technologies

Thermal Interface Products TFLEX RB3200 9X9IN

Learn More

Datasheet

Non-Stocked Lead-Time 10 Weeks

$99.05

$88.50

$88.23

$88.22

Quote

Min.: 11
Mult.: 11

Gap Fillers / Gap Pads / Sheets

Gap Filler

Non-standard

Ceramic Filled Silicone

1.2 W/mK

Gray

- 25 C

+ 200 C

228.6 mm

0.5 mm to 5.08 mm

UL 94 V-0

Tflex RB300

Bulk

Thermal Interface Products Tflex RB320, 18x18IN,

A18144-02
Laird Technologies
18: $51.99
Non-Stocked

Mfr. Part No.
A18144-02

Mouser Part No
739-A18144-02

Laird Technologies

Thermal Interface Products Tflex RB320, 18x18IN,

Learn More

Datasheet

Non-Stocked

$51.99

$49.03

Min.: 18
Mult.: 18

Gap Fillers / Gap Pads / Sheets

Non-standard

Tflex RB300

Bulk

Thermal Interface Products Tflex RB330, 18x18IN,

A18144-03
Laird Technologies
14: $68.84
Non-Stocked

Mfr. Part No.
A18144-03

Mouser Part No
739-A18144-03

Laird Technologies

Thermal Interface Products Tflex RB330, 18x18IN,

Learn More

Datasheet

Non-Stocked

$68.84

$64.92

Min.: 14
Mult.: 14

Gap Fillers / Gap Pads / Sheets

Non-standard

Tflex RB300

Bulk

Thermal Interface Products Tflex RB340, 18x18IN,

A18144-04
Laird Technologies
12: $83.52
Non-Stocked

Mfr. Part No.
A18144-04

Mouser Part No
739-A18144-04

Laird Technologies

Thermal Interface Products Tflex RB340, 18x18IN,

Learn More

Datasheet

Non-Stocked

$83.52

$78.76

Min.: 12
Mult.: 12

Gap Fillers / Gap Pads / Sheets

Non-standard

Tflex RB300

Bulk

Thermal Interface Products Tflex RB350, 18x18IN,

A18144-05
Laird Technologies
10: $100.33
Non-Stocked

Mfr. Part No.
A18144-05

Mouser Part No
739-A18144-05

Laird Technologies

Thermal Interface Products Tflex RB350, 18x18IN,

Learn More

Datasheet

Non-Stocked

$100.33

$94.62

Min.: 10
Mult.: 10

Gap Fillers / Gap Pads / Sheets

Non-standard

Tflex RB300

Bulk

Thermal Interface Products Tflex RB360, 18x18IN,

A18144-06
Laird Technologies
8: $117.02
Non-Stocked

Mfr. Part No.
A18144-06

Mouser Part No
739-A18144-06

Laird Technologies

Thermal Interface Products Tflex RB360, 18x18IN,

Learn More

Datasheet

Non-Stocked

$117.02

$110.36

Min.: 8
Mult.: 8

Gap Fillers / Gap Pads / Sheets

Non-standard

Tflex RB300

Bulk

Thermal Interface Products Tflex RB370, 18x18IN,

A18144-07
Laird Technologies
7: $128.55
Non-Stocked

Mfr. Part No.
A18144-07

Mouser Part No
739-A18144-07

Laird Technologies

Thermal Interface Products Tflex RB370, 18x18IN,

Learn More

Datasheet

Non-Stocked

$128.55

$126.12

Min.: 7
Mult.: 7

Gap Fillers / Gap Pads / Sheets

Non-standard

Tflex RB300

Bulk

Thermal Interface Products Tflex RB380, 18x18IN,

A18144-08
Laird Technologies
7: $144.77
Non-Stocked

Mfr. Part No.
A18144-08

Mouser Part No
739-A18144-08

Laird Technologies

Thermal Interface Products Tflex RB380, 18x18IN,

Learn More

Datasheet

Non-Stocked

$144.77

$142.03

Min.: 7
Mult.: 7

Gap Fillers / Gap Pads / Sheets

Non-standard

Tflex RB300

Bulk

Thermal Interface Products Tflex RB390, 18x18IN,

A18144-09
Laird Technologies
6: $176.53
Non-Stocked

Mfr. Part No.
A18144-09

Mouser Part No
739-A18144-09

Laird Technologies

Thermal Interface Products Tflex RB390, 18x18IN,

Learn More

Datasheet

Non-Stocked

$176.53

$157.72

Min.: 6
Mult.: 6

Gap Fillers / Gap Pads / Sheets

Non-standard

Tflex RB300

Bulk

Thermal Interface Products Tflex RB3100, 18x18IN,

A18144-10
Laird Technologies
6: $194.26
Non-Stocked

Mfr. Part No.
A18144-10

Mouser Part No
739-A18144-10

Laird Technologies

Thermal Interface Products Tflex RB3100, 18x18IN,

Learn More

Datasheet

Non-Stocked

$194.26

$173.56

Min.: 6
Mult.: 6

Gap Fillers / Gap Pads / Sheets

Non-standard

Tflex RB300

Bulk

Thermal Interface Products Tflex RB3110, 18x18IN,

A18144-11
Laird Technologies
5: $208.85
Non-Stocked

Mfr. Part No.
A18144-11

Mouser Part No
739-A18144-11

Laird Technologies

Thermal Interface Products Tflex RB3110, 18x18IN,

Learn More

Datasheet

Non-Stocked

$208.85

$189.30

Min.: 5
Mult.: 5

Gap Fillers / Gap Pads / Sheets

Non-standard

Tflex RB300

Bulk

Thermal Interface Products Tflex RB3120, 18x18IN,

A18144-12
Laird Technologies
5: $226.32
Non-Stocked

Mfr. Part No.
A18144-12

Mouser Part No
739-A18144-12

Laird Technologies

Thermal Interface Products Tflex RB3120, 18x18IN,

Learn More

Datasheet

Non-Stocked

$226.32

$205.15

Min.: 5
Mult.: 5

Gap Fillers / Gap Pads / Sheets

Non-standard

Tflex RB300

Bulk

Thermal Interface Products Tflex RB3130, 18x18IN,

A18144-13
Laird Technologies
4: $241.61
Non-Stocked

Mfr. Part No.
A18144-13

Mouser Part No
739-A18144-13

Laird Technologies

Thermal Interface Products Tflex RB3130, 18x18IN,

Learn More

Datasheet

Non-Stocked

$241.61

$220.93

Min.: 4
Mult.: 4

Gap Fillers / Gap Pads / Sheets

Non-standard

Tflex RB300

Bulk

Thermal Interface Products Tflex RB3140, 18x18IN,

A18144-14
Laird Technologies
4: $258.89
Non-Stocked

Mfr. Part No.
A18144-14

Mouser Part No
739-A18144-14

Laird Technologies

Thermal Interface Products Tflex RB3140, 18x18IN,

Learn More

Datasheet

Non-Stocked

$258.89

$236.73

Min.: 4
Mult.: 4

Gap Fillers / Gap Pads / Sheets

Non-standard

Tflex RB300

Bulk

Thermal Interface Products Tflex RB3150, 18x18IN,

A18144-15
Laird Technologies
4: $273.25
Non-Stocked

Mfr. Part No.
A18144-15

Mouser Part No
739-A18144-15

Laird Technologies

Thermal Interface Products Tflex RB3150, 18x18IN,

Learn More

Datasheet

Non-Stocked

$273.25

$252.52

Min.: 4
Mult.: 4

Gap Fillers / Gap Pads / Sheets

Non-standard

Tflex RB300

Bulk

Tflex™ RB300 Thermal Gap Filler

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