Part Number: 5019.0669.00
Category: Pressure Washer Parts → Pump Repair Kits → Hot Water Seal Kits
Type: Comet 5019.0669.00 Hot Water Seal Kit – OEM Replacement for FW & FW2 Pressure Washer Pumps

The Comet 5019.0669.00 Hot Water Seal Kit (Part #5019.0669.00) is a genuine OEM replacement repair kit designed for servicing compatible Comet FW and FW2 Series hot water pressure washer pumps. Specifically engineered for high-temperature applications, this premium seal kit restores proper sealing performance, helping maintain operating pressure, reduce internal water bypass, and extend the service life of your hot water pressure washer pump.

Key Features & Benefits

• Genuine Comet OEM hot water seal kit
• Part Number: 5019.0669.00
• Designed for FW and FW2 Series pressure washer pumps
• Engineered specifically for hot water applications
• Restores proper sealing performance
• Helps eliminate internal water bypass
• Maintains operating pressure and pump efficiency
• High-temperature resistant sealing materials
• Ideal for pump rebuilds and preventive maintenance
• OEM-quality fit and long service life

Technical Specifications

Part Number: 5019.0669.00

Product Type: Hot Water Seal Kit

Manufacturer: Comet Pumps

Application: Hot Water Pressure Washer Pumps

Compatible Pump Series: FW & FW2

OEM Replacement: Yes

Compatible Pump Models

Designed for use with compatible Comet FW and FW2 Series hot water pressure washer pumps.

Always verify your pump model before ordering by referencing your owner's manual or pump identification tag.

Function of the Hot Water Seal Kit

The hot water seal kit helps:

• Maintain proper sealing in high-temperature applications
• Prevent internal water bypass
• Restore operating pressure
• Reduce water leakage
• Improve pump efficiency
• Extend pressure washer pump service life

Replacing worn hot water seals helps restore pressure washer performance while protecting critical pump components from heat-related wear.

Common Signs Replacement Is Needed

Replace the hot water seal kit if you notice:

• Reduced operating pressure
• Water leaking from the pump manifold
• Internal water bypass
• Worn or heat-damaged seals
• Reduced cleaning performance
• Pump rebuild or scheduled preventive maintenance

Replacing worn seals promptly helps prevent damage to ceramic plungers, manifolds, and other internal pump components.

Installation & Service Notes

• Shut down the pressure washer and relieve all system pressure.
• Allow the pump to cool completely before servicing.
• Remove the pump manifold according to the manufacturer's service procedures.
• Carefully remove the existing hot water seals and related sealing components.
• Clean all sealing surfaces thoroughly.
• Inspect ceramic plungers, packings, O-rings, and the manifold for wear or damage.
• Install the new OEM hot water seals in the correct orientation.
• Reassemble the pump and verify proper pressure and leak-free operation.

Important: During service, inspect ceramic plungers, check valves, oil seals, and additional sealing components. Replacing related wear items at the same time helps maximize pump reliability and long-term performance, especially in high-temperature operating conditions.

Maintenance Recommendations

• Inspect hot water seals during routine pump maintenance.
• Replace worn seals at the first signs of leakage or pressure loss.
• Allow the pump to cool before performing maintenance.
• Maintain clean, filtered inlet water to minimize seal wear.
• Use only genuine OEM Comet replacement parts to maintain optimum pump performance, reliability, and long service life in hot water pressure washer systems.