Description
Pentair housing gasket for Pinnacle and Superflo pumps R355619 42.192
The Pentair housing gasket for Pinnacle and Superflo pumps R355619 42.192 is the original flat seal that fits between the pump housing and the backplate on compatible Pentair pool pumps. It provides a continuous watertight barrier around the wet end so the pump can operate at normal filtration pressure without leaks at the joint between the motor and the hydraulic body.
Main features of the Pentair housing gasket R355619
- Original style Pentair housing gasket for Pinnacle and Superflo pump wet ends.
- Precisely cut seal that matches the contour of the pump housing and backplate.
- Made from elastomer material suitable for chlorinated and salt water pools.
- Designed to work together with the mechanical seal to keep the motor side dry.
Function and role in the pump assembly
In Pentair Pinnacle and Superflo pumps, the housing gasket R355619 is mounted between the pump body and the rear backplate or seal plate. When the fixing screws are tightened, the gasket is compressed and seals the entire perimeter of the joint, stopping water from escaping along the mating faces and helping to protect the motor and mounting area from moisture.
- Seals the contact surface between the wet end housing and the backplate.
- Helps prevent drips and seepage around the joint under filtration pressure.
- Supports the mechanical shaft seal by keeping the surrounding area dry.
Compatibility and typical applications
The Pentair housing gasket for Pinnacle and Superflo pumps R355619 42.192 is intended for specific Pentair models that share the same wet end geometry. It follows the original outline and hole pattern so it can be installed as a direct replacement during pump refurbishment.
- Compatible with selected Pentair Pinnacle pumps that specify R355619 as housing gasket.
- Compatible with Pentair Superflo pumps using the same backplate and housing design.
- Suitable for use together with original Pentair backplate screws, seal plate and pump housing.
Before ordering, always confirm the pump model on the identification plate and check that R355619 or 42.192 appears in the spare parts list for your unit.
When to replace the Pentair R355619 housing gasket
Housing gaskets are exposed to pressure, vibration, temperature fluctuations and pool chemicals. Over time, the material can harden, compress permanently or become damaged during disassembly, reducing its sealing capacity.
- Visible flattening, cracks or cuts in the existing gasket.
- Persistent damp area or water marks around the joint between housing and backplate.
- Pump service or seal replacement where the wet end has been opened.
- Refurbishment of older pumps where all seals and gaskets are renewed preventively.
Whenever the wet end is separated from the motor, it is good practice to install a new R355619 housing gasket instead of reusing an old, compressed seal.
Installation guidelines
Fitting the Pentair housing gasket for Pinnacle and Superflo pumps R355619 42.192 is part of normal pump reassembly after a mechanical seal or wet end service. All work should be carried out with the pump disconnected from the power supply and the hydraulic circuit depressurised.
- Switch off and isolate the electrical supply and close valves before opening the pump.
- Separate the pump housing from the motor and remove the old gasket, cleaning both mating surfaces carefully.
- Check that the new gasket is clean, undamaged and correctly oriented to match the bolt pattern.
- Place the R355619 gasket on the housing or backplate, ensuring it lies flat without twists or folds.
- Reassemble the wet end to the motor and tighten the fixing screws evenly in a cross pattern so the gasket compresses uniformly.
After reassembly, reopen the valves, prime the pump and check the joint between housing and backplate during the first operating minutes to ensure that the area remains completely dry.
Good practice for longer gasket life
A few simple precautions help the new housing gasket R355619 to deliver a long, reliable service life.
- Keep water chemistry within recommended limits to reduce chemical stress on elastomer components.
- Avoid overtightening backplate screws, which can crush or distort the gasket.
- Inspect the joint for small leaks periodically and correct any issues quickly.
- Whenever the pump is opened, plan to replace the housing gasket along with the mechanical seal for best results.
With a correctly installed Pentair housing gasket for Pinnacle and Superflo pumps R355619 42.192, the wet end remains properly sealed and the pump can operate safely and efficiently over many filtration seasons.
