Pentair 77707-0117 Coil/Tubesheet O-Ring Package

What This Part Is Used For
Pentair 77707-0117 Coil/Tubesheet O-Ring Package is a replacement sealing kit used in compatible Pentair heater assemblies. It provides O-rings for sealing the coil and tubesheet connections.

Why This Part Matters
Worn O-rings can cause internal heater leaks and pressure loss. Replacing them restores proper sealing and helps prevent water intrusion into critical components. This is especially important during heater rebuilds or after leak diagnosis.

Key Features and Specifications

• Manufacturer part number: 77707-0117
• Coil/Tubesheet O-ring package
• Used in compatible Pentair heater systems
• Supports internal sealing
• Replacement sealing components
• Confirm exact heater model before ordering

Installation and Fitment Guidance
Shut off gas and electrical supply before servicing heater components. Inspect mating surfaces and lubricate O-rings if required. Confirm by manufacturer part number before ordering.

About the Pentair Brand
Pentair manufactures gas pool heaters widely installed in residential and commercial pools. Their heaters are common on professional service routes. Pentair maintains strong support for replacement parts and rebuild kits. The brand is trusted across the pool industry.

Common Service Context
This O-ring package is typically replaced during heater leak repairs or full coil service. It is also installed when addressing pressure related seepage.