Grant Black Flue Seal Fks64 Low Level Bal/Flue 26-70Kw

approx 140mm dia

Grant Black Flue Seal – FKS64

Part Number: FKS64
Type: Flue Seal
Application: Low-Level Balanced Flue Systems (26–70kW)

Ensure a secure and weatherproof seal on your Grant oil boiler flue system with the Grant Black Flue Seal FKS64. Specifically designed for low-level balanced flue systems rated between 26kW and 70kW, this genuine Grant part plays a crucial role in maintaining the safety, efficiency, and integrity of your boiler’s flue terminal.

This durable rubberised seal fits snugly around the flue pipe, creating an airtight barrier that helps prevent flue gas leakage and keeps out rain, dust, and debris. A must-have component during flue installation or refurbishment, the FKS64 ensures full compliance with manufacturer and building regulations.

Key Features

• Genuine Grant OEM replacement flue seal

• Designed for low-level balanced flue systems

• Compatible with 26kW to 70kW Grant oil boilers

• Provides an airtight, weather-resistant seal

• Helps prevent leaks, corrosion, and ingress of debris

• High-performance, heat- and weather-resistant rubber

• Easy to install during routine flue maintenance or repairs

Compatible Boiler Models

The FKS64 flue seal is suitable for use with the following Grant boiler ranges:

• Grant Vortex Pro 26–70kW

• Grant Vortex Eco models with low-level balanced flue kits

• Any compatible outdoor or utility models within the 26–70kW range

Always check boiler and flue kit compatibility before ordering.

When to Replace

• During new flue kit installations or reassembly

• If the existing flue seal shows cracking, wear, or hardening

• If flue gases are leaking or there is visible condensation or staining

• As part of regular servicing on flue systems exposed to extreme temperatures or weather

Technical Specifications

• Part Number: FKS64

• Material: Heat- and weather-resistant black rubber

• Flue Type: Low-Level Balanced Flue

• Boiler Output Range: 26kW to 70kW

• Installation: Fits around flue pipe; seated between terminal components