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MV-20 Section Repair MoldThumbnail (click to enlarge)

Features and benefits

Designed for Tractor, Skidder and Grader Tire Repair.
Handles Radial and Bias Ply tire sizes from 14.00 x 25/25 through 18.00 x 24/25.
Handles up to 20" x 20" (51 cm x 51 cm) patch - distortion free.
The Vulcanizer repair process allows the rubber to flow during curing in both the plug area and between the patch and inner lining of the casing to form a dense, sealed repair that will not leak or fail.
Built-in Automatic Air Differential Control supplies approx. 45 psi of pressure to the inside and approx. 30 psi to the outside Airbag of the tire to cure the plug and patch simultaneously.
Outside Heatpad conforms to tire profile.
Lightweight self-standing design offers portability and maximum stability.
Low profile, easy access 27" (69 cm.) Expandable High Tensile Steel Shell Cavity simplifies tire loading and unloading.
Quick Lock device is easy to operate - no time consuming tensioning straps required.
Available in electric or steam configuration for cost and energy efficient operation.
400 cure hour or 6 month warranty on parts, Heatpads and Airbags.
Total pressure of 18,000 lbs. is applied to maximum patch size to produce a dense, long lasting compression cure that will outlast any open steam cure.
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AccessoriesVULCAN-VULCAP Accessories
TreadchambersVULCAN-VULCAP Treadchambers
Tire LiftersVULCAN-VULCAP Tire Lifters
Service & Warranty PolicyVULCAN-VULCAP Service and Warranty Policy
Contact usVULCAN-VULCAP Contact Information
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    Thumbnail (click to enlarge)
    VULCAN-VULCAP MV-20 Section Repair Mold
    VULCAN-VULCAP MV-20 Cross Section Thumbnail (click to enlarge)















Designed to repair Tractor Tires, Skidder Tires, Grader Tires





Light weight and easy to transport.
Permanent Outside Air Bag and Heat Pad.
Available in 220V, single phase, 15 amps only or steam.
No time consuming, tedious straps required to secure for curing process.
Built-in Automatic Air Differential Control.
Self Standing design for maximum stability.
21" (54 cm) Steel Shell Expandable Cavity.
Cures Plug/Patch simultaneously.
Handles up to 20" x 20" (51 cm x 51 cm) patch.
400 hour warranty on parts and Heat Pads.
Available in Electric or Steam configuration.
Requires only 45 P.S.I. Curing Pressure.
Zero Distortion on Radial or Bias Ply tires.
Pressure and heat for maximum adhesion of patch to casing.
Cost and energy efficient.

Handles tire sizes from 14.00 x 24/25 through 18.00 x 24/25


This new generation of VULCAN-VULCAP Section Repair Molds are light-weight and cost-effective.  If proper repair procedures are followed, repaired injuries can be guaranteed for the life of the tire.  The repair is a true vulcanising repair, where the rubber flows during curing both in the plug area and between the patch and inner casing liner.  This is not the case with chemical pre-cured patch repairs.  All VULCAN-VULCAP models of Section Repair Molds are patented and are the result of over 50 years of successful research and development for the independent tire repair and tire retread industry.



All VULCAN-VULCAP Heatpads are built to  and  standards and certified to .





 A new and easy Method to protect Heatpads when
curing Repairs in OTR Tires


The Problem

Taking the time to correctly fill in the voids of an OTR tire will extend the life of your Heatpad.

When the lug voids of the tread design are not filled in properly, the Heatpad is distorted when pushed into the voids by the pressure of the Airbag.  The Heating Element inside the Heatpad is then damaged and may cause the Heatpad to overheat.  This can result in a fire starting in the tire.

In the case of strap type curing systems, it can also damage the thermocouple sensor wires.


There are a few different ways in which to fill in the tread voids:

(1)        Plaster of Paris - this is a good procedure to use but is very messy and time consuming.

(2)        Aluminum foil - this is easy to use but very often not enough tin foil is used.  The void looks like it has been filled but when air pressure is applied, the foil compresses into the tread void and the heatpad then becomes distorted.

(3)        Other types of fillers - these are always messy.

The Best Solution

VULCAN-VULCAP’s new Silica Sand filled Tread Lug Filler Bags are the best alternative to the above.

The Silica Sand is very fine and allows the sandbags to take the shape of the tread void.

The Tread Lug Filler Bags come in sets of 20 bags in various sizes.

We realize that this may not cover all the different size Lug Void Configurations, therefore additional bags can be made to customer specifications.


Please note:  Heatpads that fail because Tread Voids are not filled in properly are not covered under Warranty as the sharp Tread Edges destroy the Heating Elements!



Below are pictures of VULCAN-VULCAP Heatpads that were used and damaged beyond repair due to failure of using lug fillers.  This damages the Heatpads unnecessarily and is not covered under warranty.  It is very important to avoid this kind of costly mistake!