HM Metal-Housed Heating Mantles - BriskHeat

HM Metal-Housed Heating Mantles

BriskHeat HM Metal-Housed Heating Mantles - Beaker Heater - BriskHeat

BriskHeat HM Metal-Housed Heating Mantles are fiberglass insulated heaters for laboratory and pilot laboratory applications. They are used to heat a variety of round bottom shaped vessels, to either increase temperature or keep media at a constant process temperature. All heating mantles are manufactured to high quality standards of craftsmanship.

The exterior of the HM Metal-Housed Heating Mantle is a plastic-coated metal casing, with a pre-molded fiberglass liner to hold the round-bottom flasks. The heating element consists of a chrome-nickel alloy resistance wire which is electrically insulated using a crocheted high-temperature yarn. The adapted shape ensures an even heat transition to the glass flask, and a layer of fiberglass insulation under the heating element reduces heat dissipation to increase efficiency.

  • Flexible fiberglass heating element for uniform heat
  • Durable plastic-coated chemical resistant metal housing
  • Thermally insulated and grounded for safety

NOTE: HCLAMP Rod Support Attachment Sold Separately

  • Round bottom flasks up to 20 liters (20,000ml)
  • Includes predrilled threaded hole on rear for clamp accessory
  • Built-in 1 or 2 zone heating option
  • 120V or 240V
  • 5-foot (1.5m) power cord
  • 120V includes standard 3-prong plug (NEMA 5-15)
  • 240V crimped ferrule terminated leads
  • For operating temperatures up to 450°C (842°F)
  • Heating conductor temperature Max. 842°F (450°C)
  • Main connection cable 5ft (1.5m) with plug with grounded contact
  • Type of protection Heating element: IP 00

Safety equipment
The building or facility’s circuit breaker can be used as short-circuit protection. The use of a GFCI Ground Fault Interupting Device is recommended.

The heating mantles may only be operated with an (RCD) personal protection adapter. (Not included)

Due to the high temperature range, the heating mantles are not protected against moisture and the heater core is not equipped with sufficient protection against dangerous currents.

Note: The heating mantles may be exclusively operated with an personal protection adapter (RCD 30mA) connected ahead of it.


  1. Check for suspected damage to the heater like rips, punctures, etc.
  2. Confirm voltage / wattage rating of heater is appropriate for power supply device or temperature controller. The heater is designed to work at a specific voltage to heat properly. Failure to operate the heater at the specified rating could result in overheating of the heating element, the surface being over-heated, or personal injury. Also note lower-than-rated voltage will result in under-heating.

To Avoid Electrical Shock, Always:

  • Use an electrical outlet that operates with a fuse or a circuit breaker and a ground fault circuit interrupt (GFCI).
  • Disconnect the mantle from the power supply prior to maintenance and servicing.

To Avoid Personal Injury:

  • Do not use in the presence of flammable or combustible materials. Fire or explosion may result. This device contains components which may ignite such materials.
  • Do not operate in damp or wet locations.
  • Refer servicing to qualified personnel only.
  • Flasks and vessels should be handled with care. Appropriate safety clothing, glasses, gloves, and coats should be worn when operating all heating mantles.

To Avoid Damage:

  • Never plug HM-MH models directly into a power source. Your heating mantle MUST be operated with a temperature controller and with an appropriate size flask, filled with fluid.
  • Never operate heating mantle without fluid within the flask.
  • Fluid should not be allowed to come in contact with the cavity of the heating mantle.
  • Never operate the mantle at temperatures above maximum exposure temperature .

Your heating mantle is a fiberglass-insulated heater designed for heating laboratory vessels. The mantles are specifically designed for glass flasks, however, with appropriate temperature control and product type, metal or plastic flasks can be used. Only use round bottom flasks of the size corresponding to the mantle size.

  1. Install heating mantle around properly sized flasks.
  2. For proper temperature control, secure the thermocouple, RTD, or other sensing device vertically along the lead wire seam of the blanket with one strip of adhesive tape so that it is sandwiched firmly in-between the heater and glass flask.
  3. Sensor must be in close proximity to the heater to prevent overheating.
  4. Sensor should be connected in accordance with instructions provided with temperature controller.
  5. Ensure heater is in contact with the surface to be heated. The heater must fit tightly around the glass flask. Minimal air gaps between the heater and the flask provide the best thermal transfer of heat to the flask and extend heater life.
  6. Once the mantle has been properly installed:
  7. 120VAC: Plug the heater into an acceptable temperature controller. Use a variable transformer, manual control, or automatic controller to prevent overheating.

Note: Due to their overall size, the heating mantle sizes 50ml and 100ml are only designed with one heating zone. They are put into operation by means of an MIN/MAX switch to half the power. Maximum heating element temperature for series HM-MH: 842°F (450°C).

  1. Connect the heater to an appropriate power supply.
  2. Heating Mantle can be switched on and off by using the green ON/OFF switch.
  3. With the MIN/MAX switch the heating zones can be switched (See Figure 1)
  4. In case of the liquid level dropping during operation, adjust/switch heating zones accordingly.

Series HM-MH Metal-Housed Heating Mantles - heating zones

On the initial heat-up of the mantles, a slight odor may be detected and some discoloration will
occur in the cavity area. The discoloration of the cavity area has no effect on the operation of the
mantle. If the heated vessel becomes discolored, it can be cleaned with water. To bake-out your
mantle prior to use, connect the mantle to your temperature controller and fill a flask
corresponding to the size of the mantle half full of water. Place the flask in the mantle cavity and
allow the water to come to a boil and continue boiling for approximately 15 minutes. The mantle
can be operated at full rated voltage during bake-out.

For more information, please see the complete manual: HM-Hard-Side-Heating-Mantle-Instruction-Manual.pdf
This product requires a temperature controller for safe operation

Click Here to find a temperature controller or Click Here to contact the factory direct for assistance

Available Options: HM Metal-Housed Heating Mantles

QuantityPriceUOMPart NumberSizeVoltageWattage
HM0050MH150 ml12060
HM0050MH250 ml24060
HM0100MH1100 ml120110
HM0100MH2100 ml240110
HM0250MH1250 ml120165
HM0250MH2250 ml240165
HM0500MH1500 ml120220
HM0500MH2500 ml240220
HM1000MH11000 ml120325
HM1000MH21000 ml240325
HM2000MH12000 ml120545
HM2000MH22000 ml240545
HM3000MH13000 ml120650
HM3000MH23000 ml240650
HM4000MH14000 ml120815
HM4000MH24000 ml240815
HM5000MH15000 ml120935
HM5000MH25000 ml240935
HM6000MH16000 ml1201090
HM6000MH26000 ml2401090
NOTE: Selecting Configuration Options limit / refine the available products; to match your selection criteria.


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