Mosmatic 43.904 WD/WC Swivel Repair Kit – Replacement Seal & Rebuild Kit

Part Number: 6929
Category: Pressure Washer Parts → Swivel Repair Kits
Type: Mosmatic 43.904 WD/WC Swivel Repair Kit – Replacement Seal & Rebuild Kit

The Mosmatic 43.904 WD/WC Swivel Repair Kit (Part #6929) is a genuine Mosmatic OEM rebuild kit designed to restore the performance of compatible WD and WC series swivels. Engineered for routine maintenance and repair, this kit contains the replacement sealing components needed to restore smooth swivel operation, eliminate leaks, and extend the service life of high-pressure Mosmatic swivels used in pressure washing and industrial cleaning applications.

Key Features & Benefits

• Genuine Mosmatic OEM swivel repair kit
• Part Number: 6929
• Manufacturer Model: 43.904
• Designed for Mosmatic WD/WC series swivels
• Complete seal and rebuild kit
• Restores swivel sealing performance
• Helps eliminate leaks
• Extends swivel service life
• Maintains smooth swivel rotation
• Manufactured to OEM specifications
• Rated for systems up to 4,000 PSI
• Cost-effective alternative to complete swivel replacement

Technical Specifications

Part Number: 6929

Manufacturer: Mosmatic

Manufacturer Model: 43.904

Product Type: Swivel Repair Kit

Compatible Swivels: Mosmatic WD & WC Series

Maximum Working Pressure: 4,000 PSI

Application: Swivel Seal & Rebuild Kit

OEM Replacement: Yes

Compatible Applications

Suitable for use with:

• Mosmatic WD series swivels
• Mosmatic WC series swivels
• Commercial pressure washers
• Industrial pressure washing systems
• Surface cleaners
• Pressure washer hose reels
• Ceiling wash booms
• Vehicle wash systems
• Industrial cleaning equipment
• High-pressure water systems

Always verify swivel model compatibility before ordering.

Function of the Repair Kit

The Mosmatic 43.904 Repair Kit helps:

• Restore proper swivel sealing
• Eliminate water leaks
• Maintain smooth 360° swivel rotation
• Extend swivel service life
• Restore OEM operating performance
• Reduce equipment downtime

Replacing worn seals and internal wear components helps maintain pressure, prevent leaks, and ensure dependable swivel operation.

Common Signs Replacement Is Needed

Replace the internal seals if you notice:

• Water leaking from the swivel
• Increased swivel resistance
• Rough or binding swivel movement
• Loss of pressure due to internal seal wear
• Excessive wear from prolonged service
• Scheduled preventative maintenance intervals

Routine rebuilding helps maximize swivel lifespan and maintain reliable system performance.

Installation & Service Notes

Relieve all system pressure before servicing the swivel.

Disassemble the compatible Mosmatic WD or WC swivel according to the manufacturer's service instructions.

Replace all worn seals and rebuild components included in the 43.904 repair kit, inspecting internal components for wear or damage before reassembly.

Lubricate components as recommended by Mosmatic and verify smooth swivel rotation before returning the equipment to service.

Important: This repair kit is designed specifically for compatible Mosmatic WD/WC series swivels. Always confirm swivel model compatibility before installation.

Maintenance Recommendations

• Inspect swivels regularly for leaks or restricted rotation.
• Rebuild swivels as part of scheduled preventative maintenance.
• Replace worn seals before leakage becomes excessive.
• Keep swivel components clean during servicing.
• Inspect bearings and internal components while rebuilding.
• Use only genuine OEM Mosmatic repair kits to maintain proper sealing performance, reliability, and long-term service life.