Multiquip 20396 O-Ring 254 Buna N

The Multiquip 20396 O-Ring 254 Buna N is a genuine OEM sealing component designed for a wide range of Multiquip and Whiteman walk-behind and ride-on power trowel models, including the BH11C, BH90C, BS90C, JH55C, JH90C, J36, JA, B46, BA, C, and CA series, as well as JTNS20HTCSL and JTNSW series ride-on trowels. As a direct OEM part, 20396 is manufactured to the same specifications as the original component installed at the factory, ensuring an exact dimensional match for a proper seal. Sourced directly through authorized distribution, this o-ring is a straightforward service item that keeps your trowel running without fluid migration or pressure loss at the sealing point. DHS Equipment stocks this part to support fast turnaround on trowel maintenance and repair.

Key Features

• Buna N Compound Construction — Buna N (nitrile) rubber delivers strong resistance to petroleum-based fluids and oils, making it well-suited for the hydraulic and lubrication circuits found in power trowel assemblies.
• Genuine OEM Dimensional Accuracy — Manufactured to the exact 254 cross-section and diameter specification, this o-ring seats correctly in its groove without distortion or under-compression that can cause sealing failures.
• Broad Trowel Compatibility — Fits an extensive range of Multiquip and Whiteman walk-behind trowel series (BH, BS, JH, JS, J36, B46, BA, CA, HDA, PRO, SCT) and JTNS/JTNSW ride-on trowel models.
• Prevents Fluid Leaks at Critical Sealing Points — A compromised o-ring allows hydraulic fluid or lubricant to bypass its seat, leading to contamination, pressure loss, and accelerated wear on surrounding components.
• Direct OEM Replacement — Installs in place of the original without modification, using the same groove geometry and compression characteristics as the part it replaces.

An o-ring is a loop-shaped seal used to block the passage of fluids or gases between mating surfaces in a mechanical assembly. In power trowel applications, o-rings are commonly found within hydraulic fittings, gear housings, and lubrication ports, where they maintain pressure integrity and prevent contamination ingress. When an o-ring becomes hardened, cracked, or deformed from age or heat exposure, it loses its ability to maintain a proper seal — resulting in leaks, reduced hydraulic pressure, and potential damage to adjacent components 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.