Multiquip 578135 Viton O-Ring AS-135

The Multiquip 578135 is a genuine OEM Viton O-Ring AS-135 designed for SP, PS, and CS series pavement and flat saws. This sealing component is an exact-match replacement sourced directly from Multiquip, ensuring it meets the same material and dimensional standards as the original part. Compatible across a wide range of saw models including SP605726, SP605736, PS403016, PS403030, PS706030, CS403016, CS706036, and many more SP, PS, and CS series machines, the 578135 covers one of the broadest fitment ranges in the Multiquip saw lineup. When a worn or damaged O-ring lets fluid or air escape past a sealed joint, swapping in the correct Viton-grade replacement restores the tight seal the system depends on to operate properly.

Key Features

• Viton Material Grade — Viton (fluoroelastomer) construction delivers superior resistance to petroleum-based fluids, heat, and chemical exposure compared to standard rubber O-rings, making it the correct specification for saw hydraulic and fuel system applications.
• Genuine OEM Part — Supplied directly under Multiquip part number 578135, this O-ring matches the original AS-135 cross-section and durometer exactly so it seats and compresses the same way the factory seal did.
• Broad Saw Series Compatibility — Fits SP, PS, and CS series pavement and flat saws, covering models such as SP4, SP605716 through SP706036, PS403016 through PS706036, and CS403016 through CS706036.
• Leak-Free Sealing Performance — A correctly installed O-ring prevents fluid bypass at sealed joints, maintaining system pressure and keeping the saw running at full cutting capacity without fluid loss or contamination.
• Fuel and Hydraulic System Safety — A failed O-ring in a fuel or hydraulic circuit can create a fire hazard or cause unpredictable system behavior; replacing with the correct Viton-rated seal is a critical safety step.

An O-ring is a loop-shaped seal that sits in a machined groove between two mating surfaces, compressing to block the passage of fluid or gas. In pavement saw applications, O-rings are used throughout fuel, hydraulic, and cooling circuits to maintain pressure and prevent leaks at fittings, valves, and housings. When an O-ring hardens, cracks, or deforms over time, it loses its ability to seal — leading to fluid loss, pressure drop, and potential damage to surrounding components. Replacing a worn O-ring promptly with the correct Viton-grade part restores the sealed system and prevents a minor seal failure from escalating into a more costly repair.

Confirm fitment using your saw's model number before ordering. For fitment questions or parts support, contact DHS Equipment directly.

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.