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We pledge customer support and satisfaction. Service is the name of our game. With over 32 years of working in and with the heating industry, BPSR brings an unmatched level of expertise and product quality to your business.

Moly-D® two-shank element

The U shaped elements are most frequently used suspended with the bottom of the "U" down. The element consists of two cold ends (Lu) and a U-shaped hot section (Le). The cold ends are twice the diameter of the hot section and are attached by a weld. The extremities of the cold ends are metallized with aluminum to provide a low-resistance contact surface to which the electrical connections are made with flat braided aluminum straps.


The two-shank element is available in the following hot zone/cold end diameters: 3/6, 4/9, 6/12, 9/18 and 12/24.


These elements are available in two grades: MD-31 for element temperatures up to 1700C (3100F) and MD-33 for element temperatures up to 1800C (3272°F).

Moly-D® bent elements

The molybdenum disilicide material becomes soft and ductile about 1200°C. Suspending the elements from the cold ends and allowing the hot zone to hang vertically down is the most frequent method of use.


The Moly-D® elements can be provided with bends in the cold end (Lu) of 30°, 45°, 90° or with bends in the hot zone (Le) of 90°. The hot zone (Le) is suspended vertically with the bottom of the "U" down. The bent element is available in the following hot zone/cold end diameters: 3/6, 4/9, 6/12, 9/18 and 12/24.

Moly-D® multi-shank element (4 or more)

For applications where the furnace roof is particularly low, the use of horizontally mounted elements can be used. In such cases, four-shank or multi-shank elements might be used where the surface temperature of the element will not exceed 1600°C. Available in Grade MD-31 in 3/6, 4/9, 6/12, 9/18 and 12/24 sizes. The multi-shank elements have advantages over two-shank elements in that the hot zones are longer, therefore fewer elements can be used and the cold end losses are reduced.

Moly-D® Accessories

Moly-D® aluminum straps, held in place by nuts and bolts, are available in two primary styles:

  • Single Loop Straps for connecting binding post to element.
  • Double loop for connecting element to element.


Moly-D® holders are available in three styles:

  • Ceramic type holders are available for the 6/12, 9/18 and 12/24 diameter elements. These holders offer higher temperature capabilities for use with elevated termination temperatures.
  • Plate type holders are available for the 3/6, 4/9, and 6/12 diameter elements. These holders are used when a single hole is cut into the furnace wall for each element. A high-temperature fiber insulating board is installed to prevent heat from escaping.
  • Metallic holders are available for the 3/6, 4/9, 6/12, 9/18 and 12/24 diameter elements. They work well in applications where spacing is restricted.


For more information, including detailed technical specifications, on Moly-D® products, please contact us or visit I Squared R's Moly-D® homepage.