Hydro-Seal is formulated specifically for water-based ballast filled tyres. Tyre sealants formulated for use in air filled tyres will separate when mixed with water, making these sealants ineffective. This sealant is designed to overcome this problem.

Hydro-Seal is a puncture preventative sealant, which disperses uniformly in water-based ballast. It is fully compatible with anti-freeze used in sub-zero conditions, whether it is ethylene glycol, propylene glycol or calcium chloride-based. When used at a mix of 1 part per 10 parts of ballast will eliminate most flat tyre costs, flat tyre downtime, and will last the life of the tyre. The sealant is water washable for easy handling, easy installation and easy removal. It is inert, environmentally safe and will not damage the tyre casing.

When properly installed into water-based ballasted tyres, Hydro-Seal will seal punctures up to 13mm (1/2 inch) in diameter in the tread area of the tyre. It can also be used in both tubeless and tube type tyres.

When a tyre is punctured, Hydro-Seal instantaneously surrounds the puncturing object to prevent pressure loss. As the puncturing object is removed the fibres and fillers are forced into the puncture forming a permanent seal. This special sealing process allows for minimal loss of pressure.

Hydro-Seal is supplied in 20 litre pails and is sold with a specially engineered installation pump for ease of use. 

The correct amount of sealant, for the volume of water, must be installed for it to perform.

For more information, please contact us.

This sealant is available from Air-Seal Products Ltd or from our network of agents.

find your

perfect solution here

Heavy Duty

For on and off road use. Supplied in Bottles, 20 litre pails and IBCs.


For hazardous conditions. Supplied in 20 litre pails and IBCs.


For water ballasted tyres. Supplied in 20 litre pails.