Black Silicone Coolant Bypass Cap, 1 1/2 inch ID 20708 These 45 degree reducer elbow

These 45 degree reducer elbow hoses have a 102mm ID at one end and a 76mm ID at the other end to connect a 4" OD tube to a 3" OD tube

The 4-ply reinforcement results in a 5mm wall thickness (61mm / 2 3/8" OD) and a working pressure rating over 21 psi (106 psi burst pressure)

The special heat-shrink polymer sleeves create a tight seal with uniform pressure all around your hose

The 4-ply reinforcement results in a working pressure rating in excess of 30 psi (135 psi burst pressure) and a 5mm wall thickness (61mm / 2 3/8" OD)

5 psi 12 psi 11 psi 10 psi 9

Black Silicone Coolant Bypass Cap, 1 1/2 inch ID 20708 These 45 degree reducer elbowThis 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 38mm (1 1 2") ID, 46mm (1 13 16") OD and measures 38mm (1 1 2") Long overall with a 30mm depth. Maximum temperature 392 F (200 C). Operating pressure rating 14 psi. Black silicone rubber only. Sold