Calmag Off-White Leak Sealer Liquid, 330 ml Bottle

  • RS Stock No. 894-6957
  • Manufacturer RS PRO
Technical data sheets
Legislation and Compliance
RoHS Status: Not Applicable
COO (Country of Origin): GB
Product Details

CalShot Leak Sealer

CalShot Leak Sealer is a powerful concentrate formula that creates a soft seal to treat inaccessible leaks and weeping joints in radiators without blocking any valves or vents. With a unique concertina applicator able to connect to any standard radiator, it saves time and effort in reducing pressure loss with no need for flushing.

Features and Benefits

• Unique concertina applicator
• Forms a soft seal within 1-24 hours
• Leave-in system formula, no need for flushing
• One 300ml bottle can treat up to 10 radiators
• No blocking of pumps, valves or air vents
• Saves time and effort in reducing pressure loss
• No drips - no waste
• No sprays or aerosols needed
• Can prevent potential water damage

Product Application Information

For use with Central Heating Systems:
Simply squeeze CalShot Leak Sealer directly into system and leave – no need for flushing. One 300ml concertina bottle is sufficient for treating up to 10 radiators.


After treating with CalShot Leak Sealer, an application of CalMag inhibitor is recommended

Attribute Value
Product Form Liquid
Colour Off-White
Package Type Bottle
Package Size 330 ml
Odour Slight
Chemical Composition Dazomet ISO, Gelling Agent, Polymer Emulsion
Discontinued product