Hayward Header O-Ring Kit Mastertemp 300 parts 3 × 50 mm union

3 × 50 mm union nuts

2 x Flue pipe joiner clamps 200mm

The Hayward Bypass Cartridge Kit is a genuine Hayward replacement part that regulates water flow through the heat exchanger to prevent overheating

which can result in heater malfunctions

Hayward Header O-Ring Kit Mastertemp 300 parts 3 × 50 mm unionThe Hayward Header O ring Kit is a genuine Hayward replacement part that provides a watertight or airtight seal between heater components. Designed specifically for the Hayward H150, H250 and H400 gas pool heater, this part ensures reliable, safe and efficient operation and is the recommended replacement for restoring full heater performance. Product Details Part Name: Hayward Header O ring Kit Brand: Hayward Compatible Models: Hayward H150, H250 and