Vaillant 509121 Packing Ring

Vaillant 509121 Packing Ring

These Vaillant packing rings, supplied in a pack of 10, are designed for use in the heat exchanger of:

• ecoTEC VU (condensing)
• ecoTEC VUW (condensing)
• ecoMAX VU (condensing)
• ecoTEC VUI (condensing) boilers