John Guest straight SS 8 x 8 mm
✓ John Guest connector✓ Super Seal 8 mm * 8 mm
John Guest connector 8mm super seal to 8 mm. You can use this coupler to connect a tube with an outer diameter of 8mm to a stainless steel tube with an outer diameter of 8mm. If you correctly attach the coupler to the 8mm stainless steel tube, it will not slide off.