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Crack Sealing Kettles by Stepp Manufacturing

Stepp Oil-jacketed Crack-sealing kettles for the heating and application of hot-applied bituminous materials in joint and crack sealing, road construction and maintenance operations.

The Stepp Manufacturing horizontal and vertical kettles are offered in a wide range of tank volumes, from 75 gallon tanks to 440 gallon, with a wide variety of options and configurations to suit the customer’s needs and job profile.

The Stepp Manufacturing kettles have earned their reputation as being the most easy to operate and maintain, reliable and efficient kettles on the market.

Features and configurations:

  • Available tank volumes: 75 gal, 125 gal, 180 gal, 280 gal, 440 gal
  • The kettle design allows complete removal of the contents and agitation of the material until the tank is empty.
  • Safety loading chute allows splash free loading of material into the kettle, with easy loading and access for cleaning and maintenance through a hinged hood.
  • Highly efficient full flow heat exchanger. 350,000 BTU fuel oil (diesel) heating system. Automatic temperature controls.
  • Control panel gauges are easy to read.
  • Auger type agitator with a variable speed hydraulic motor (in horizontal kettles), allowing rotation in either direction at speeds from 0 to 170 RPM.
  • Powerful Kubota diesel engines (model D1105-E4B on the horizontal kettles, Z482-E on vertical). 30-gallon fuel tank equipped with fuel guage, shall be provided.
  • Pumping system with reversible suction.
  • Insulated, heated, rotating overhead delivery boom.
  • Electric brakes.
  • Each base unit includes: Diesel Burner, Heated Overhead Boom with 8′ or 12′ Hose and Wand, Automatic Temperature Controls, Pumping System, Agitator and 2 Light LED System.
  • Additional options are offered based on customer requirements, including: Air compressor, heat lance, and others.







Kettle typeVerticalVerticalHorizontalHorizontalHorizontal
Volume75 gallon125 gallon180 gallon280 gallon440 gallon
Heat Transfer Oil Capacity28 gallon30 gallon110 gallon118 gallon130 gallon
Tires(2) ST235/80R16(4) 225/75R15(4) ST225/75R15(4) 225/75R15(4) ST235/80R16
Gross Vehicle Weight Rating7000 lbs12000 lbs10000 lbs12000 lbs14000 lbs
Empty weight (average)3000 lbs3500 lbs5600 lbs6000 lbs 
Dimensions (average)
128″ L
73″ W
88″ H
148″ L
73″ W
96″ H
210″ L
90″ W
85″ H
210″ L
90″ W
90″ H
Diesel Burner BTU250,000 BTU250,000 BTU350,000 BTU
Propane Burner BTU250,000 BTU250,000 BTUN/A
Heat Transfer Surface Area4585 sq. in.4585 sq. in.5950 sq. in.7375 sq. in.8795 sq. in.
Loading Chute Opening16″ x 15.5″26″ x 22″

Stepp Horizontal Kettles OJK-H:

Stepp Vertical Kettles OJK-V:

– Operations, maintenance and parts manual – Horizontal kettles OJK-H:
(login name and password required to download)
– Operations, maintenance and parts manual – Vertical kettles OJK-V
(login name and password required to download)

Additional manuals for optional components