View cart “O-ring for top of tubes” has been added to your cart. Top/Bypass Fitting for 18/20 mm Tube$40.00 Top/Bypass Fitting for 18/20mm Tube Top/Bypass Fitting for 18/20 mm Tube quantity Add to cart SKU: 96012 Category: Spare parts Additional information Additional information Package 1 Related products Add to cart Single reactor fitting $80.00 Add to cart Eas Single Channel Station $3,150.00 Add to cart Connector, 6 MB x poly. (blue) tube $9.00