Product: JBL Replacement head gasket External filter Cristal Profi E1500 Applications: Parts compatible with external filters JBL Aquarium Line - Aquarium Store
JBL CristalProfi e1500/1501/1502, e1900/1901/1902 start button + union nut | Green Aqua
JBL OutSet wide 16/22 CristalProfi e1500/1,2, Water return set with wide jet pipe for external aquarium filters : Amazon.co.uk: Pet Supplies