Black Silicone Coolant Bypass Cap, 1 1/4 inch ID 2095 The 95mm ID at one

The 95mm ID at one end and 89mm ID at the other end let you connect a 3 3/4" OD tube to a 3 1/2" OD tube

The 5mm wall thickness results in a 2 7/8" (73mm) OD

but it will not stand up to continuous exposure to petroleum

This size can conform to gentle bends with a 4" (102mm) minimum centerline bend radius

The dies fit inside your 4

Black Silicone Coolant Bypass Cap, 1 1/4 inch ID 2095 The 95mm ID at oneThis 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 32mm (1 1 4") ID, 40mm (1 9 16") OD and measures 38mm (1 1 2") Long overall with a 30mm depth. Maximum temperature 392 F (200 C). Operating pressure rating 28 psi. Black silicone rubber only. Sold