Multiquip EM218 Oil Seal

The Multiquip EM218 is a genuine OEM Oil Seal designed for a wide range of Multiquip and Whiteman power trowels, roller screeds, diaphragm pumps, and concrete pumps — including the MD80, HTX44K4, HTX44Y4, STX55J6, STX55Y6, WRS5200, LS300P, and LS600P series. As a factory-sourced component, the EM218 meets the exact material and dimensional specifications set by Multiquip, ensuring a proper seal under operating conditions. Confirmed fitment spans ride-on and walk-behind trowel families including HTX, STX, HHN, HTN, LD, JWN, B, J, and C series machines, making it one of the most broadly applicable seals in the Multiquip parts catalog. When your machine shows signs of fluid weeping or seal degradation, replacing with the correct OEM part like the EM218 is the most direct path to restoring performance.

Key Features

• Genuine OEM Sealing Specification — Manufactured to Multiquip's exact lip profile and elastomer grade, maintaining the compression rating required for rotating shaft applications in trowel and pump assemblies.
• Direct Housing Fit — The EM218 installs directly into the original bore without machining or shimming, preserving shaft-to-housing alignment on all compatible models.
• Broad Cross-Family Fitment — Confirmed for HTX, STX, HHN, HTN, LD, MD, B, J, and C series power trowels, WRS roller screeds, MQD diaphragm pumps, and LS concrete pumps.
• Fluid Retention Under Load — A functioning oil seal prevents gear oil or hydraulic fluid from migrating past the shaft, protecting internal gearbox and hydraulic components from contamination and wear.
• Prevents Collateral Damage — A failed or worn seal allows fluid loss and contamination ingress; replacing at the first sign of leakage protects bearings, gears, and hydraulic circuits from secondary failure.

An oil seal — sometimes called a shaft seal or lip seal — sits between a rotating shaft and a stationary housing, creating a barrier that keeps lubricating oil or hydraulic fluid inside the assembly while blocking dirt, moisture, and debris from entering. In power trowels, roller screeds, and pump drives, these seals are critical at gearbox outputs, rotor shafts, and pump drive interfaces where constant rotation places steady pressure on the seal lip. When an oil seal wears, cracks, or is displaced, fluid begins to weep or leak outward, depriving internal components of lubrication and allowing contaminants in — conditions that accelerate bearing and gear wear and can lead to more extensive mechanical failure if left unaddressed.

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.