The Vaillant Boiler Burner & Exchanger Door Gasket Kit (part 0020025929) is the original‑equipment solution for keeping your ecoMAX or ecoTEC boiler sealed and efficient. Designed to sit between the burner and the heat‑exchanger door, this kit stops gas or air leaks, preserves internal pressure and helps maintain optimal combustion performance.
What’s inside
– 1 × O‑ring seal (195 mm ⌀, 7 mm thick)
– 1 × Rubber seal (9 mm × 46 mm, 34 mm inner ⌀)
– 1 × Foam seal (70 mm × 33 mm inner ⌀)
– Grease packet for easy installation
– 2 × Washers (24 mm & 18 mm)
– 5 × Fixing screws (13 mm base, 5 mm thread)
All components arrive boxed with a clear illustrated instruction sheet, so even a DIY enthusiast can fit the kit confidently.
Key benefits
– Guarantees a tight, leak‑free seal
– Protects boiler pressure and combustion efficiency
– Uses genuine Vaillant parts for reliable longevity
– Simple, step‑by‑step installation guide included
Compatible models – Works with a wide range of Vaillant units, including ecoMAX series (613‑835), ecoTEC Plus/Pro models (415‑937), and many VU/VUW/VUI variants.
Replace your worn gasket today to restore peak performance and avoid costly leaks—trust the original Vaillant kit for peace of mind.
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