The Multiquip HS099900090 is a genuine OEM O-Ring designed for HS62A, HS81A, SHS62A, and SHS81A high-speed cut-off saws. As a direct OEM replacement, this seal is manufactured to the exact material grade and dimensional spec required by these Sidewinder-style handheld saws, ensuring a proper compression fit with no guesswork on compatibility. Sourced directly through Multiquip's OEM supply chain, part number HS099900090 is the correct, authorized replacement for both MQ and STOW-branded models in this family.
Key Features
- OEM-Grade Sealing Material — Produced to the exact elastomer compound and durometer specification required for the fuel and fluid systems in these cut-off saws, maintaining proper compression and seal integrity under operating conditions.
- Drop-In Dimensional Fit — Matches the original groove dimensions precisely, seating cleanly without stretching, pinching, or requiring modification to the housing or mating surface.
- Broad Sidewinder Family Coverage — A single part number covers HS62A, HS81A, SHS62A, and SHS81A models, serving both MQ High Speed and STOW High Speed cut-off saw variants.
- Prevents Fluid Leaks at the Source — A correctly seated O-Ring keeps fuel or fluid contained within the system; a worn or cracked O-Ring leads to seepage, loss of pressure, and potential fire hazard in a high-vibration saw environment.
- Fuel System Safety Relevance — On handheld cut-off saws, a compromised O-Ring in any fuel-side application poses a direct safety risk; using the correct OEM part ensures the seal performs to the original design intent.
An O-Ring is a loop-shaped elastomeric seal used to close off the gap between two mating components, preventing the escape of fluids or gases under pressure. In a high-speed cut-off saw, O-Rings are commonly found in the carburetor, fuel system, and various cover assemblies where a leak-free interface is critical to safe and consistent operation. When an O-Ring hardens, cracks, or takes a set from heat and vibration, it loses its ability to compress evenly, leading to leaks, rough running, or fuel seepage that can create a hazardous condition on the worksite.
| Fits: HS62A, HS81A, SHS62A, SHS81A
For fitment questions or parts support, contact DHS Equipment directly.
Part Details
| Part Number | HS099900090 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | O-Ring |
Compatibility & Fitment
| Name | Model |
|---|---|
| MQ High Speed Cut-Off Saws (Sidewinder) | HS62A |
| MQ High Speed Cut-Off Saws (Sidewinder) | HS81A |
| STOW High Speed Cut-Off Saws (Sidewinder) | SHS62A |
| STOW High Speed Cut-Off Saws (Sidewinder) | SHS81A |
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.
