Block Off Plug 1/4" 6 mm Black For Rubber Hose Heater Fuel 100 & 200 series The rubber boot seal is

The rubber boot seal is a vast improvement over the small O-ring typically used on older OEM tube designs

Part Number: AF572-16DBLK

We also recommend applying a slight smear of Loctite 518 flange sealant for a bullet proof seal

Part Number : STP002-188000F-POL

Part Number: AF557-10

Block Off Plug 1/4" 6 mm Black For Rubber Hose Heater Fuel 100 & 200 series The rubber boot seal isPart Number: AF64 5206BLK these block off plugs made by Aeroflow performance are designed to block off rubber hoses when they are not needed. This makes it great toblock off unused rubber heaterhoses, fuel line, pvc lines etc. We recommend to always use a clamp when using this block off cap. These block offplugs are available in the popular sizes from 6mm up to 38mm and can be purchased in silver or black colour options.