Furuno CH-500 Installation Manual page 77

APPENDIX 2 HOW TO MAKE THE RETRACTION TANK FOR WOODEN VESSEL
3. Apply marine sealant to the threads of the PVC pipe, then screw the PVC pipe into the flange
assembly.
Apply marine sealant to Apply marine sealant to
the threads. the threads.
4. To prevent water from entering at the threads, fill the clearance between the flange assembly
and PVC pipe with marine sealant.
Fill this area with Fill this area with
marine sealant. marine sealant.
PVC pipe PVC pipe
Cross-section view:
marine sealant application area
Apply marine sealant carefully, so Apply marine sealant carefully, so
that the it does not go over the top that the it does not go over the top
surface of the flange. surface of the flange.
Marine sealant Marine sealant
Flange assembly Flange assembly
PVC pipe PVC pipe
Flange Flange
asssembly asssembly
AP-7