The Putzmeister Seal Kit 410504SK is one of the most important wear components for the proper functioning of the S-Valve Outlet Bearing. Its purpose is to prevent concrete slurry, moisture, and abrasive particles from entering the bearing housing—avoiding premature wear, shaft scoring, and expensive repairs.

For technicians and operators working with Putzmeister concrete pumps, this kit is essential for maintaining sealing integrity and ensuring continuous, trouble-free operation on the job site.

What Is the Seal Kit 410504SK?

The 410504SK Seal Kit (also referred to as the S-Valve Bearing Seal Kit) is a complete set of seals, O-rings, and wiper rings designed to protect the S-Valve bearing assembly. It ensures a tight and durable seal between the S-Valve, the shaft, and the bearing housing, preventing contamination and extending the lifespan of internal components.

OEM Part Number:

410504SK

Part Name:

S-Valve Outlet Bearing Seal Kit

Application of the 410504SK Seal Kit

This seal kit is used on Putzmeister concrete pumps equipped with the 410504-type bearing housing, commonly found in machines operating with the S-Valve shifting system.

It is typically replaced during:

• S-Valve bearing housing maintenance

• Overhaul or reconstruction service

• Preventive maintenance programs

• Replacement of S-Valve bronze bushes or shaft components

What’s Included in the Seal Kit 410504SK?

The kit generally contains all sealing elements required to fully protect the S-Valve bearing housing:

1. Lip Seals

Primary seals designed to prevent concrete slurry and dirt from entering the bearing assembly.

2. O-Rings

Provide tight sealing between covers, housing surfaces, and the S-Valve shaft.

3. Wiper Rings (Scrapers)

Remove abrasive residue from the shaft, preventing premature wear of the main seals.

All seals are manufactured from high-abrasion and high-pressure resistant polyurethane, typically rated between 90–95 Shore A, ideal for extreme concrete pumping environments.

Technical Specifications

• Material: High-resistance Polyurethane

• Hardness: 90–95 Shore A

• Compatibility: Putzmeister S-Valve systems using 410504 housing

• Function: Full sealing of the S-Valve outlet bearing assembly

• Resistance: High-pressure operation, abrasion, moisture, and slurry contamination

Key Benefits of Replacing the 410504SK Regularly

1. Full Bearing Protection

Prevents contamination that can destroy bearings, shafts, and internal bushings.

2. Prevents Costly Failures

A damaged seal kit can lead to major repairs, including replacing the entire bearing housing assembly.

3. High Performance Under Pressure

Polyurethane construction resists heat, vibration, and constant pressure during pumping.

4. Perfect Fit for Putzmeister

Designed specifically for Putzmeister concrete pumps, ensuring proper alignment and fast installation.

When Should You Replace the 410504SK?

You should replace this kit when you notice:

• Grease leakage around the bearing housing

• Shaft play or irregular movement

• Noise or vibration from the S-Valve area

• Concrete contamination inside the bearing

• Overheating during operation

Most contractors replace the kit every 800–1,200 operating hours, depending on material type and pumping intensity.

Timelapse Video: 410504SK Replacement

Watch a quick timelapse of the Seal Kit replacement here:

@mr.pumpparts 🛠️ Seal Kit #410504SK by Putzmeister 🛠️ 📌 Key Features: Sealing Integrity: Ensures a complete seal between the S-Valve, shaft, and bearing housing. Component Protection: Protects rolling elements and internal bushings from abrasion and corrosion. Material: Made from high-abrasion and high-pressure resistant Polyurethane (90-95 Shore A). 📦 Kit Contents: Lip Seals: Prevent dirt, water, or concrete slurry from entering the bearing housing. O-Rings: Ensure a tight seal between components. Wiper Rings: Clean the shaft and prevent abrasive material from reaching the primary seals. 🛠️ Application: Essential replacement part for the S-Valve Outlet Bearing on Putzmeister Concrete Pumps with 410504-type bearing housing. 🌟 Key Benefits: Component Protection: Protects internal bearings and S-Valve shaft from abrasive concrete contamination. Failure Prevention: Regular replacement prevents premature failure and the need for replacing the entire bearing assembly. High-Pressure Performance: Maintains integrity under extreme pumping pressures. Precision Fit: Complete kit ensures a perfect fit within the bearing housing. 📝 Part Number: 410504SK #putzmiester Putzmeister #410504SK #S-Valve Seal Kit, Putzmeister #S-Valve #Gaskets, #Concrete #Pump Bearing Seals, 410504 Seal Replacement, #Parts, S- #concretepump #reparation #construction #orlandoflorida ♬ Sunrise - Official Sound Studio