The Multiquip 3131 O-Ring is a genuine OEM seal designed for Whiteman plaster and mortar mixers — including WM-900P, WM-700S, and WM-700P models — as well as the MS-40H masonry saw. As a direct Multiquip OEM part, the part is manufactured to the exact material composition and dimensional tolerances specified for these machines, ensuring a proper seal every time. Confirm your model code against the fitment list before ordering to make sure this is the correct O-Ring for your application.
Key Features
- Exact OEM Material Spec — Manufactured to Multiquip's original compound and durometer rating, so the seal compresses and seats correctly without over-deformation or premature cracking.
- Drop-In Sealing Fit — Sized to the precise groove dimensions on the WM-900P, WM-700S, WM-700P, and MS-40H, so it seats flush without trimming or shimming.
- Broad Fitment Across Two Machine Families — Covers Whiteman plaster and mortar mixer models (WM-700S, WM-700P, WM-900S, WM-900P) and the MS-40H masonry saw under a single part number.
- Leak Prevention Where It Counts — A correctly seated O-Ring keeps fluids contained and prevents contamination of adjacent components; a worn or flattened O-Ring leads to seepage, messy jobsites, and accelerated wear on surrounding parts.
- Genuine Multiquip OEM — Supplied directly in the Multiquip OEM parts chain, so you're getting the same component installed at the factory — not an approximation.
An O-Ring is a circular elastomeric seal that sits in a machined groove between two mating surfaces or around a shaft or port, creating a pressure-tight barrier that prevents fluids or contaminants from passing through. In mixer and masonry saw applications, O-Rings are typically found around fluid ports, shafts, and housings where maintaining a clean seal is critical to consistent operation. When an O-Ring ages, hardens, or gets physically damaged, it loses the ability to compress evenly against its mating surface — resulting in leaks, contamination ingestion, or loss of pressure that can affect machine performance and component life.
Part Details
| Part Number | 3131 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | O-Ring |
Compatibility & Fitment
| Name | Model |
|---|---|
| Mixers | WM-900P |
| Masonry Saws | MS-40H |
| Mixers | WM-700S |
| Mixers | WM-700P |
| Mixers | WM-900S |
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.
