Multiquip 212500000 Priming Plug Gasket

The Multiquip 212500000 Priming Plug Gasket is a genuine OEM Priming Plug Gasket designed for MQD2H and MQD3H diaphragm pumps. As an authentic Multiquip replacement component, it is manufactured to the exact material and dimensional specifications of the original part. This gasket is a direct replacement for worn or damaged units on MQD2H and MQD3H models, ensuring a proper, leak-free seal at the priming plug. Keeping this gasket in good condition is a simple but critical step in maintaining pump performance and preventing fluid loss during operation.

Key Features

• Genuine OEM Sealing Integrity — Manufactured to the original compression and material spec for the priming plug interface, ensuring the gasket seats and seals exactly as intended on MQD series diaphragm pumps.
• Drop-In Replacement — Matches the original priming plug dimensions on MQD2H and MQD3H models for straightforward installation without rework or modification to the plug housing.
• Confirmed Fitment — Verified for use on Multiquip MQD2H and MQD3H diaphragm pumps.
• Leak Prevention at the Source — A worn or cracked priming plug gasket allows air ingress and fluid leakage, degrading pump prime and output. Replacing this gasket restores the sealed system the pump depends on.
• Fluid System Safety — A compromised priming plug seal can allow pumped fluids to escape at the plug point, creating hazardous conditions around the pump. This genuine replacement maintains the integrity of the sealed fluid path.

The priming plug gasket forms the sealing interface between the priming plug and the pump body on diaphragm pumps. Its job is to prevent air from entering the suction side of the pump and to stop fluid from escaping around the plug during operation. When this gasket deteriorates, hardens, or cracks, the pump may lose prime repeatedly, deliver inconsistent flow, or leak fluid at the plug point — all of which interrupt pump operation and can cause damage over time. Replacing the gasket with a genuine Multiquip 212500000 restores the airtight, fluid-tight seal that keeps the pump primed and running efficiently.

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.