Mayline AP20

Mayline AP20 is a liquid which eliminates leaks in tap water installations of up to 20 L per day and is suitable for use with all of the materials currently in use, even plastic – certified for use with drinking water. The product can be used to seal leaks due to corrosion, cracks and defective soldering in galvanised, copper, steel and synthetic pipes. Mayline AP20 is long lasting and resistant to deterioration. Mayline AP20 can be used in the food sector.

Code | Package

5/MYAP20 | 5 lt
1/MYAP20 | 1 lt (da 12 pezzi)


Important note

Shake the container well before use. Mayline AP20 can NOT bemixed with glycols, antifreezes or other chemical products. After thesealing process has been completed, the Mayline AP20 must beimmediately removed from the system. The recovered product canbe reused various times.

Instructions for use

Mayline AP20 self-sealing liquid contains select cellulosefibres which are deposited over the leak, therebyproviding a fiLering effect that reduces the flow. Thisallows for the chemical elements to crystallize externallyand to harden definitively over time.1. Preliminary phaseClose off and empty the defective line. Collect the waterand measure it to determine the necessary amountof product. Close of the valves beneath the wash basin,remove the tap and seal if off it with a stopper.Perlators, screens, fiLers and counters must be removed.Seal off the access tubes for any dishwashersand washing machines. Rinse the system out well andremove any calcium deposits using Mayline S26 liquiddescaler.2. Operative phasePressurize the circuit to be sealed with AP20 to about5 – 7 bar using a loading pump. The Mayline AP20 mustcome out of the leak in order to crystallize inside the line.In the case of particularly humid environments, MaylineAP20 requires at least 24 hours. At room temperature (+20/25°C), this time must be extendedto 2 or 3 days. In the case of pipes with tight externalcoverings which do not allow air to pass, sealing is notalways possible (ex. a covered copper pipe with a leakwhere the covering is glued). After the sealing processhas been completed, the Mayline AP20 must be immediatelyremoved from the system. When finished, rinseall of the work tools carefully. The recovered productcan be reused various times.

Safety informations

In the event of eye contact, rinse well with water andconsult a Physician. In the event of skin contact, rinsewell with water. Wear protective gloves and eyewear.Use water to immediately remove the product fromobjects such as tiles, flooring, wash basins, etc. Keepout of the reach of children.


Refer to the material safety data sheet (MSDS)

Mixing proportions

DO NOT dilute. The product comes ready for use.


The product is not hazardous for transport. The indicationsare provided based on actual experience. Technicalchanges are possible.


For information concerning waste disposal/effluent, please consult the corresponding safety data sheet.

Shelf life

Shelf life 5 years (from date of manufacture)

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