View cart “O-ring for top of tubes” has been added to your cart. Polyethylene (Blue$66.00 Polyethylene (blue) tubing for air lines, 5×3 mm, 5 m Polyethylene (Blue quantity Add to cart SKU: 80012 Category: Spare parts Additional information Additional information Package 1 Related products Add to cart T-Connector, 5 mm Poly. (Blue) Tube $15.00 Add to cart Cooling Fan for CE Instruments $50.00 Add to cart Top/Bypass Fitting for 18/20 mm Tube $40.00