Plumbers Choice F4 Leak Sealer 500ml bottle

Plumbers Choice F4 Leak Sealer 500ml is the ideal solution for treating small leaks and weeps in your sealed central heating system. Designed to be dispersed throughout the system, this fast-acting formula works within 1–24 hours, effectively sealing minor faults that could lead to pressure loss or boiler breakdowns.

Its unique sealing efficiency ensures that it won’t cause blockages or restrict flow through critical system components such as pumps, safety devices, or air vents. A reliable and cost-effective alternative to draining down and manual repair, the F4 Leak Sealer is compatible with all metals and materials typically found in domestic heating systems.

Why Buy This Product?

• Seals small, inaccessible leaks and weeps

• Reduces boiler pressure loss and prevents breakdowns

• No need for draining the system or invasive repairs

• Non-blocking formulation ensures continued system flow

• Fast and easy solution for homeowners and plumbers alike
  
  

Key Specifications

• Volume: 500ml

• Action Time: Effective within 1–24 hours

• Application: Suitable for all sealed central heating systems

• Safe For: Pumps, air vents, and other sensitive components

• Compatibility: All commonly used metals and system materials
  
  
  

What’s in the Box

• 1 x 500ml Plumbers Choice F4 Leak Sealer

• Application and safety instructions