Comet 5019.0645.00 Seal Kit 18mm TW5050 Pump – OEM Replacement Part

Part Number: 5019.0645.00
Category: Pressure Washer Pump Parts → Seal Kits → Comet Pump Repair Parts
Type: Comet Seal Kit – 18mm TW/TWS Series Pumps

The Comet 5019.0645.00 Seal Kit is a genuine OEM replacement repair kit designed for servicing compatible Comet TW and TWS Series triplex plunger pumps equipped with 18mm ceramic plungers, including the popular TW5050 pump model. This complete water seal kit contains the critical sealing components required to restore pump performance, maintain operating pressure, and prevent internal water leakage during operation. 

Key Features & Benefits

• Genuine Comet OEM Replacement Part
• Designed for compatible TW and TWS Series pumps
• Fits pumps equipped with 18mm ceramic plungers
• Compatible with TW5050 and related pump models
• Restores proper sealing performance
• Helps recover lost pressure and efficiency
• Reduces internal water leakage and bypass
• Supports pump rebuild and maintenance programs
• OEM-quality fit and reliability
• Helps extend pump service life
• Ideal for preventative maintenance and professional repairs

Technical Specifications

Manufacturer: Comet

Part Number: 5019.0645.00

Product Type: Water Seal Kit

Plunger Size Compatibility: 18mm

Pump Series Compatibility: TW & TWS Series Pumps

Application: Pump Seal Replacement & Rebuild Service

OEM Replacement: Yes

Kit Coverage: One Pump

Compatible Pump Series

Compatible with Comet TW and TWS Series Triplex Pumps utilizing 18mm ceramic plungers, including models such as:

• TW5050
• TW4550
• TW5550
• TWS Series 18mm Pumps
• Other compatible TW/TWS Series 18mm plunger configurations

Always verify pump model compatibility before ordering.

Typical Applications

• Pressure washer pump rebuilds
• Commercial pressure washer maintenance
• Industrial cleaning equipment repairs
• Fleet washing equipment servicing
• Agricultural cleaning systems
• Contractor equipment maintenance
• Preventative maintenance programs
• Equipment rental fleet service

Performance Advantages

• Restores proper high-pressure sealing performance
• Helps recover pressure loss caused by worn seals
• Improves pump efficiency and cleaning performance
• Reduces internal water bypass and leakage
• Protects plungers, manifolds, and internal pump components
• Supports long-term pump reliability and service life
• Genuine OEM components ensure proper fit and performance
• Ideal for preventative maintenance and professional rebuild procedures
• Helps maximize the lifespan of compatible Comet TW and TWS Series pumps

Maintenance Recommendations

• Replace seals whenever pressure loss or water leakage is observed.
• Inspect ceramic plungers for wear, cracks, or scoring during seal replacement.
• Check valve assemblies and O-rings during pump rebuild procedures.
• Replace oil seals when performing major pump overhauls.
• Follow Comet service procedures and torque specifications during installation.
• Use only genuine OEM Comet replacement parts to maintain factory performance and reliability.