ALUMASEAL<sup>®</sup> - Stop radiator & heater core leaks safely & effectively.ALUMASEAL<sup>®</sup> - Stop radiator & heater core leaks safely & effectively.ALUMASEAL<sup>®</sup> - Stop radiator & heater core leaks safely & effectively.

ALUMASEAL® Stop Leak

  • Seals leaks without clogging cooling system passages.
  • Safe on all metal, plastic and rubber parts.
  • Compatible with all coolants/antifreeze.
  • Suitable for all liquid cooled engines.
  • Seals leaks permanently.
  • Works in minutes.

Stops Radiator & Heater Core Leaks Safely & Effectively.

ALUMASEAL® has been sealing radiator and heater core leaks for over 75 years. Today's products feature modern state-of-the-art formulas for unbeatable leak stopping performance. ALUMASEAL® is safe and compatible with ALL antifreeze and coolants (green, orange, yellow or G-05, etc.), and with ALL metal, plastic and rubber parts.

  • ALUMASEAL<sup>®</sup> Stop Leak - 473mL Bottle

    ALUMASEAL® Bottle
    473mL liquid

    PN: ASLC

  • ALUMASEAL<sup>®</sup> Stop Leak - 20g Powder Tube

    ALUMASEAL® Blister
    20g Powder Tube

    PN: ASBP

  • ALUMASEAL<sup>®</sup> Stop Leak - 24 Tube Dispenser

    ALUMASEAL® Dispenser
    24 Tubes

    PN: ASD

Download the ALUMASEAL Formula brochure here.