Black Silicone Coolant Bypass Cap, 12mm ID

This cap features the same water- and coolant-compatible silicone rubber formulation as our silicone coolant hoses. It is designed for capping off coolant bypass or vacuum fittings, but it can also be used to protect fittings in storage.

This size has a 12mm (15/32") ID, 20mm (13/16") OD and measures 38mm (1 1/2") Long overall with a 30mm depth. Maximum temperature 392° F (200° C). Operating pressure rating 53 psi. Black silicone rubber only. Sold individually.

Sold individually -- two are shown in photo to show both ends. Ordering Qty 1 will get you one cap.