Multiquip EM27435 Lube Box Seal

The Multiquip EM27435 Lube Box Seal is a genuine OEM component designed for LS-series hydraulic-driven concrete pumps, including the LS300GK, LS300, LS300G, LS300P, LS400, LS40D, LS40TD, LS500, LS50TD, LS600, LS600P, and LS60TD. As a direct OEM replacement, EM27435 is manufactured to the same specifications as the original part, ensuring a correct fit within the lube box assembly. Sourced directly from Multiquip, this seal is the dependable choice for operators and service technicians maintaining LS-series concrete pump equipment.

Key Features

• Genuine OEM Sealing Integrity — Manufactured to original material and compression specifications, maintaining a proper fluid-tight barrier within the lube box assembly.
• Direct-Fit Replacement — Engineered to seat correctly in the lube box housing of LS-series concrete pumps without modification to the surrounding assembly.
• Broad LS-Series Compatibility — Confirmed fitment across LS300GK, LS300, LS300G, LS300P, LS400, LS40D, LS40TD, LS500, LS50TD, LS600, LS600P, and LS60TD models.
• Prevents Lubricant Loss and Contamination — A worn or failed lube box seal allows lubricant to escape and contaminants to enter, accelerating wear on internal pump components and leading to costly damage.
• Supports Continuous Pump Output — Proper lubrication of the pumping mechanism depends on this seal holding pressure; replacing it at the first sign of leakage keeps the concrete pump performing at full capacity.

The lube box seal is a critical sealing component within the lube box assembly of hydraulic-driven concrete pumps. Its role is to contain the lubricant that protects the reciprocating pump components — preventing leakage outward and blocking abrasive material or moisture from entering the mechanism. When this seal degrades or fails, lubricant escapes, internal surfaces run dry, and the risk of accelerated wear or pump seizure increases significantly. Replacing a worn lube box seal with a correct OEM part like the Multiquip EM27435 is a straightforward preventive measure that protects the broader pump investment.

Part Details

Compatibility & Fitment

Verify Before You Order

Fitment is machine-number and revision-specific; always confirm your model and serial number against the fitment list.

Why Buy From DHS Equipment

Every part is verified against the manufacturer's part number before it ships, so what you order is what arrives. We carry parts from leading OEM brands and our own DHS Quality Parts line of professional aftermarket components. Need help finding the right part? Our team is available to confirm compatibility whenever you need it. Orders are processed fast to keep your jobs on track. We don't just sell parts. We keep you jobsite ready.

Questions? Contact our team at [email protected] or 866-611-9369 — DHS Equipment is here to help you maintain peak performance.