Polyimide Heaters | McMaster-Carr

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49 Products

Ultra-Thin Heat Sheets

Less than 0.015″ thick and highly conformable, these heat sheets warm components in tight spaces within complex designs. You need a temperature switch or controller (not included) to regulate their heat output.

Note: Do not cut, crease, or overlap these sheets—this will damage the heating element. Use a roller during installation to remove air pockets and ensure direct surface contact. Once these sheets have been applied, they cannot be removed or reused.

Rectangle

5 W/in² Watt Density—Sheets with a watt density of 5 watts per square inch are good for general purpose heating.

10 W/in² Watt Density—For rapid warm-up and high-temperature jobs, use sheets with a watt density of 10 watts per square inch.

20 W/in² Watt Density—Choose sheets with a watt density of 20 watts per square inch for your highest-temperature applications, such as starting chemical reactions and altering the viscosity of liquids.

Adhesive Back—Stick them to surfaces with their adhesive back.

Polyimide—Made of polyimide, these sheets emit minimal gas and won’t leave an oil residue, which means you can use them in vacuum systems.

	Overall												Adhesive Back
	Lg.	Wd.	Thk.	Wattage, W	Voltage, V AC	Electrical Phase	Current, amp	Max. Heat Output, ° F	Material	Environment Temp. Range, ° F	Wire Lead Lg.	For Surface Material		Each
5 W/in² Watt Density



		2"	1/2"	0.008"	5	28	Single	0.17	350	Polyimide	-20 to 350	12"	Metal, Plastic	35475K982	000000


		2"	1"	0.008"	10	28	Single	0.35	350	Polyimide	-20 to 350	12"	Metal, Plastic	35475K922	00000
		3"	1"	0.008"	15	28	Single	0.53	350	Polyimide	-20 to 350	12"	Metal, Plastic	35475K942	00000
		5"	1"	0.008"	25	28	Single	0.89	350	Polyimide	-20 to 350	12"	Metal, Plastic	35475K662	00000
		5"	1"	0.008"	25	120	Single	0.2	350	Polyimide	-20 to 350	12"	Metal, Plastic	35475K762	00000
		5"	2"	0.008"	50	120	Single	0.4	350	Polyimide	-20 to 350	12"	Metal, Plastic	35475K822	00000
		5 1/2"	4"	0.008"	110	120	Single	0.91	350	Polyimide	-20 to 350	12"	Metal, Plastic	35475K952	00000
		11"	5 1/2"	0.008"	302	120	Single	2.5	350	Polyimide	-20 to 350	12"	Metal, Plastic	35475K972	000000
		11"	10"	0.008"	550	120	Single	4.58	350	Polyimide	-20 to 350	12"	Metal, Plastic	35475K782	000000


		10 W/in² Watt Density



				2"	1/2"	0.008"	10	28	Single	0.35	350	Polyimide	-20 to 350	12"	Metal, Plastic	35475K983	00000


				2"	1"	0.008"	20	28	Single	0.71	350	Polyimide	-20 to 350	12"	Metal, Plastic	35475K923	00000
				3"	1"	0.008"	30	28	Single	1.07	350	Polyimide	-20 to 350	12"	Metal, Plastic	35475K943	00000
				3"	1"	0.008"	30	120	Single	0.25	350	Polyimide	-20 to 350	12"	Metal, Plastic	35475K834	00000
				5"	1"	0.008"	50	28	Single	1.78	350	Polyimide	-20 to 350	12"	Metal, Plastic	35475K663	00000
				5"	1"	0.008"	50	120	Single	0.4	350	Polyimide	-20 to 350	12"	Metal, Plastic	35475K763	00000
				5"	2"	0.008"	100	120	Single	0.83	350	Polyimide	-20 to 350	12"	Metal, Plastic	35475K823	00000
				5 1/2"	4"	0.008"	220	120	Single	1.83	350	Polyimide	-20 to 350	12"	Metal, Plastic	35475K953	00000
				11"	5 1/2"	0.008"	605	120	Single	5.04	350	Polyimide	-20 to 350	12"	Metal, Plastic	35475K973	000000
				11"	10"	0.008"	1,100	120	Single	9.16	350	Polyimide	-20 to 350	12"	Metal, Plastic	35475K783	000000


				20 W/in² Watt Density



						2 1/2"	1/2"	0.008"	20	28	Single	0.71	350	Polyimide	-20 to 350	12"	Metal, Plastic	35765K915	00000


						2 1/2"	1"	0.008"	40	28	Single	1.42	350	Polyimide	-20 to 350	12"	Metal, Plastic	35765K912	00000
						3 1/2"	1"	0.008"	60	28	Single	2.14	350	Polyimide	-20 to 350	12"	Metal, Plastic	35765K916	00000
						5 1/2"	1"	0.008"	100	28	Single	3.57	350	Polyimide	-20 to 350	12"	Metal, Plastic	35765K914	00000
						5 1/2"	3"	0.008"	300	120	Single	2.5	350	Polyimide	-20 to 350	12"	Metal, Plastic	35765K918	00000

Square

5 W/in² Watt Density—Sheets with a watt density of 5 watts per square inch are good for general purpose heating.

10 W/in² Watt Density—For rapid warm-up and high-temperature jobs, use sheets with a watt density of 10 watts per square inch.

Adhesive Back—Stick them to surfaces with their adhesive back.

Polyimide—Made of polyimide, these sheets emit minimal gas and won’t leave an oil residue, which means you can use them in vacuum systems.

	Overall												Adhesive Back
	Lg.	Wd.	Thk.	Wattage, W	Voltage, V AC	Electrical Phase	Current, amp	Max. Heat Output, ° F	Material	Environment Temp. Range, ° F	Wire Lead Lg.	For Surface Material		Each
5 W/in² Watt Density



		1"	1"	0.008"	5	28	Single	0.17	350	Polyimide	-20 to 350	12"	Metal, Plastic	35475K842	000000


		2"	2"	0.008"	20	28	Single	0.71	350	Polyimide	-20 to 350	12"	Metal, Plastic	35475K962	00000
		2"	2"	0.008"	20	120	Single	0.17	350	Polyimide	-20 to 350	12"	Metal, Plastic	35475K862	00000
		2"	2"	0.008"	40	120	Single	0.33	350	Polyimide	-20 to 350	12"	Metal, Plastic	35475K863	00000
		3"	3"	0.006"	45	120	Single	0.38	300	Polyimide	-40 to 300	12"	Fiberglass, Metal, Plastic	35475K182	000000
		5 1/2"	5 1/2"	0.006"	151	120	Single	1.26	300	Polyimide	-40 to 300	12"	Fiberglass, Metal, Plastic	35475K632	000000


		10 W/in² Watt Density



				1"	1"	0.008"	10	28	Single	0.35	350	Polyimide	-20 to 350	12"	Metal, Plastic	35475K843	00000


				2"	2"	0.008"	40	28	Single	1.42	350	Polyimide	-20 to 350	12"	Metal, Plastic	35475K963	00000
				3"	3"	0.008"	90	120	Single	0.75	350	Polyimide	-20 to 350	12"	Metal, Plastic	35475K883	00000
				5 1/2"	5 1/2"	0.006"	302	120	Single	2.52	300	Polyimide	-40 to 300	12"	Fiberglass, Metal, Plastic	35475K633	000000


				20 W/in² Watt Density



						1 1/2"	1"	0.008"	20	28	Single	0.71	350	Polyimide	-20 to 350	12"	Metal, Plastic	35765K911	00000


						2 1/2"	2"	0.008"	80	28	Single	2.84	350	Polyimide	-20 to 350	12"	Metal, Plastic	35765K913	00000
						3 1/2"	3"	0.008"	180	120	Single	6.42	350	Polyimide	-20 to 350	12"	Metal, Plastic	35765K917	00000

Round

10 W/in² Watt Density—For rapid warm-up and high-temperature jobs, use sheets with a watt density of 10 watts per square inch.

Adhesive Back—Stick them to surfaces with their adhesive back.

Polyimide—Made of polyimide, these sheets emit minimal gas and won’t leave an oil residue, which means you can use them in vacuum systems.

												Adhesive Back
	Overall Dia.	Thk.	Wattage, W	Voltage, V AC	Electrical Phase	Current, amp	Max. Heat Output, ° F	Material	Environment Temp. Range, ° F	Wire Lead Lg.	For Surface Material		Each
10 W/in² Watt Density



		2"	0.008"	31.4	120	Single	0.26	350	Polyimide	-20 to 350	12"	Metal, Plastic	35475K82	000000

Hazardous Location Thermally Insulating Wraparound Heaters for Drums and Totes

For 55 gal. Containers

These ETL-listed heaters keep containers warm in areas where hazardous material is present. Also known as heat blankets, they surround drums and totes to heat them up quickly. They’re also insulated with foam or fiberglass to retain heat. They have a built-in thermostat that cycles on and off to keep contents at a set temperature. There's no need to monitor these heaters—since the temperature can’t be changed, there’s no risk of tampering.

Hazardous Location Rating—Hazardous location ratings indicate whether manufacturers have included safety features in products to facilitate their safe use in a hazardous environment. Before selecting a product for a hazardous location, ensure it is rated for your environment.

	For Container
	Dia.	Ht.	Wattage, W	Watt Density, W/in²	Voltage, V AC	Current, amp	Max. Heat Output, ° F	For Surface Material	Material	Insulation Material	Hazardous Location Rating		Each
Nonadjustable Thermostat







				For 55 gal. Containers

				23 5/16"	34"	1,200	0.5	120	10	140	For Metal, Plastic, or Fiberglass	Nylon	Fiberglass	NEC Class I Division 2 Groups A, B, C, D; NEC Class II Division 2 Groups F, G; NEC Zone 2 Groups IIC, IIB, IIA	7039N11	000000000

Adhesive-Back Thermocouple Probes for Surfaces

Simply peel off the adhesive backing on these probes and press them onto a surface to measure its temperature. Without bulky mounting hardware, the thin sensor can slide into crammed spots. You can connect them to controllers, thermometers, and other temperature reading devices to view and store measurements. Pick the thermocouple type that best covers the temperature range you expect your surface to be. Make sure the thermocouple type you choose is compatible with the device you plan to connect it to.

These thermocouples are manufactured to conform to ASTM E230 for accuracy. Accuracy is how far off the reported value is from the actual temperature.

Note: When installing probes with wire leads, the red wire is negative.

Probes with Cable

	Probe							Cable				Wire Lead
	Lg.	Wd.	Thk.	Response Time, sec.	Max. Temp., ° F	Accuracy @ Temperature	Sensor Type	Style	Lg., ft.	Material	Max. Temp., ° F	Lg.	AWG		Each
Type J







				Wire Leads

				1 1/4"	1"	0.063"	2	400	±4° F Between 32° F to 400° F	Exposed	Straight	4	Fiberglass	900	1 1/4"	30	3648K32	000000


				1 1/4"	1"	0.063"	2	400	±4° F Between 32° F to 400° F	Exposed	Straight	8	Fiberglass	900	1 1/4"	30	5794N11	00000


				Type K







								Wire Leads

								1 1/4"	1"	0.063"	2	400	Not Rated Below 32° F ±4° F Between 32° F to 400° F	Exposed	Straight	4	Fiberglass	900	1 1/4"	30	3648K34	00000


								1 1/4"	1"	0.063"	2	400	Not Rated Below 32° F ±4° F Between 32° F to 400° F	Exposed	Straight	8	Fiberglass	900	1 1/4"	30	5794N12	00000


								Type T







												Wire Leads

												1 1/4"	1"	0.063"	2	400	Not Rated Below 32° F ±1.8° F Between 32° F to 240° F ±0.75% Above 240° F	Exposed	Straight	4	Fiberglass	900	1 1/4"	30	3648K36	00000


												1 1/4"	1"	0.063"	2	400	Not Rated Below 32° F ±1.8° F Between 32° F to 240° F ±0.75% Above 240° F	Exposed	Straight	8	Fiberglass	900	1 1/4"	30	5794N13	00000

Thermocouple Probes for Solids


Style 1	Flat-Pin Mini Connector

Pierce pliable plastics, rubber, and other soft solids to check the internal temperature. Also known as penetration probes, these thermocouple probes have a stainless-steel housing with a narrow tip. They are often plugged into handheld thermometers and have a handle for a comfortable grip. A coiled cable helps avoid tangles for neat and compact storage, while also allowing you to stretch it out when you need more reach. Pick the thermocouple type that best covers the temperature range you expect your solid to be. You should also make sure the thermocouple type you choose is compatible with the device you plan to connect it to.

These thermocouples are manufactured to conform to ASTM E230 for accuracy. Accuracy is how far off the reported value is from the actual temperature.

304 Stainless Steel Probes with Cable


Style 1	Flat-Pin Mini Connector

Insulated—Insulated probes are filled with magnesium oxide for extra protection around the internal wires.

		Probe									Cable
	Style	Style	Lg.	Dia.	Response Time, sec.	Max. Temp., ° F	Accuracy @ Temperature	Insulation	Handle Material	Sensor Type	Style	Lg., ft.	Material	Max. Temp., ° F		Each
Type J







				Flat-Pin Mini Thermocouple Connector

				1	Pointed Tip	6"	0.134"	2	400	±4° F Between 32° F to 400° F	Insulated	Nylon	Grounded	Coiled	5	PVC	220	39105K654	0000000


				Type K







								Flat-Pin Mini Thermocouple Connector

								1	Pointed Tip	4 1/2"	1/8"	4	500	Not Rated Below 32° F ±4° F Between 32° F to 500° F	Noninsulated	Nylon	Grounded	Coiled	4	Polyurethane Rubber	175	39105K72	00000


								1	Pointed Tip	6"	3/32"	2	500	Not Rated Below 32° F ±4° F Between 32° F to 500° F	Noninsulated	Nylon	Grounded	Coiled	4	Polyurethane Rubber	175	39105K652	00000

Handheld Thermocouple Probes for Air

Plug these probes into a handheld thermometer to check air temperature on the go. They have a handle for a comfortable grip and a coiled cable that stretches when you need extra reach. With an exposed sensor tip, these probes are quick to respond to air temperature changes but can’t be used in liquids. Perforated stainless steel shields the sensor tip, protecting it if it’s hit or bumped as you measure.

These thermocouples are manufactured to conform to ASTM E230 for accuracy. Accuracy is how far off the reported value is from the actual temperature.

Probes with Cable


500° F Max Temperature	Flat-Pin Mini Thermocouple Connector

	Probe						Material			Cable
	Lg.	Dia.	Response Time, sec.	Max. Temp., ° F	Accuracy @ Temperature	Insulation	Handle	Shaft	Sensor Type	Style	Lg., ft.	Material	Max. Temp., ° F		Each
Type K







				Flat-Pin Mini Thermocouple Connector

				4"	1/8"	10	500	Not Rated Below 32° F ±4° F Between 32° F to 500° F	Noninsulated	Nylon	304 Stainless Steel	Exposed	Coiled	4	Polyurethane Rubber	175	3868K43	000000