Part Number: 1888
Category: Pressure Washer Parts → Pump Repair Kits → Water Seal Kits
Type: AR 1888 Water Seal Kit – 22mm OEM Replacement for Pressure Washer Pumps

The AR 1888 Water Seal Kit (Part #1888) is a genuine OEM replacement repair kit designed for servicing compatible Annovi Reverberi (AR) pressure washer pumps utilizing 22 mm sealing components. This complete seal kit includes high-pressure packings, low-pressure seals, and O-rings required to restore proper sealing performance, eliminate water leakage, and maintain peak pump efficiency.

Key Features & Benefits

• Genuine AR (Annovi Reverberi) OEM water seal kit
• Part Number: 1888
• Designed for compatible AR pressure washer pumps with 22 mm sealing components
• Complete high- and low-pressure sealing kit
• Includes OEM high-pressure packings, low-pressure seals, and O-rings
• Restores proper sealing performance
• Helps eliminate water leakage
• Maintains operating pressure and pump efficiency
• Ideal for pump rebuilds and preventive maintenance
• OEM-quality fit and durability

Kit Contents

The AR 1888 Water Seal Kit includes:

• (3) 840330 – 22 mm High-Pressure Packings
• (3) 840340 – 22 mm Low-Pressure Seals
• (3) 961240 – O-Rings (31.47 × 1.78 mm)

All components are genuine OEM AR replacement parts.

Technical Specifications

Part Number: 1888

Product Type: Water Seal Kit

Manufacturer: AR (Annovi Reverberi)

Seal Size: 22 mm

OEM Replacement: Yes

Compatible Applications

Designed for use with compatible AR pressure washer pumps utilizing 22 mm sealing components.

Always verify your pump model and seal size before ordering.

Function of the Water Seal Kit

The water seal kit helps:

• Restore proper sealing around the ceramic plungers
• Maintain operating pressure
• Prevent internal water bypass
• Reduce external water leakage
• Improve pump efficiency
• Extend pump service life

Replacing worn sealing components helps restore pressure washer performance while protecting internal pump components from unnecessary wear.

Common Signs Replacement Is Needed

Replace the water seal kit if you notice:

• Water leaking from the pump manifold
• Reduced operating pressure
• Decreased water flow
• Worn or damaged packings or seals
• Cracked or flattened O-rings
• 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.
• Remove the pump manifold according to the manufacturer's service procedures.
• Carefully remove the existing packings, seals, and O-rings.
• Clean all sealing surfaces thoroughly.
• Inspect ceramic plungers and the manifold for wear or damage.
• Lubricate the new seals lightly before installation.
• Install all components in the correct orientation.
• Reassemble the pump and verify proper pressure and leak-free operation.

Important: Inspect ceramic plungers, check valves, and additional sealing components during service. Replacing related wear items together helps maximize pump reliability and long-term performance.

Maintenance Recommendations

• Inspect water seals during routine pump maintenance.
• Replace worn sealing components at the first signs of leakage or pressure loss.
• Maintain clean, filtered inlet water to minimize seal wear.
• Never operate the pump without an adequate water supply.
• Use only genuine OEM AR replacement parts to maintain optimum pump performance, reliability, and long service life.