Can you measure yours and get one of these https://www.amazon.co.uk/Assortment...pcontext&ref_=fplfs&psc=1&smid=A366VRQJ6GL3Z6 or similar. Search for a kit with similar dimensions. Local motor factors may be able to help.
Or you could ask here https://www.rielloburners.co.uk/spares/burner/3748557
They will very quickly rot, expand, and leak.
