Multiquip 0480350300 O-Ring Drain Cap P30

The Multiquip 0480350300 is a genuine OEM O-Ring Drain Cap P30 designed for a wide range of Multiquip centrifugal and trash pump models, including QP205SH, QP205SLT, QP2B, QP2H, QP303B, QP303H, QP305SLT, QP402B, QP402H, QPT205SLT, QPT305SLT, MQ62TDD, and MQ62TK. As a factory-sourced component, it delivers the exact material grade and dimensional tolerancing specified for these pump families. The 0480350300 seats directly against the drain cap to form a leak-free seal, requiring no modification to fit the original mounting point. Sourcing the correct OEM o-ring ensures the drain cap assembly performs as intended across centrifugal dewatering and trash pump applications.

Key Features

• OEM-Grade Elastomer Seal — Manufactured to Multiquip's material and compression specifications, ensuring the o-ring maintains a consistent, fluid-tight seal at the drain cap interface.
• Direct Drop-In Replacement — Sized to the P30 specification and matched to the original drain cap geometry, so it seats correctly without trimming or adaptation.
• Broad Pump Family Coverage — Confirmed fitment across QP2, QP303, QP305, QP402, QPT205, QPT305, MQ62TDD, and MQ62TK pump models.
• Leak Prevention at the Drain Point — A worn or flattened o-ring at the drain cap allows fluid to bypass the seal, causing pooling beneath the pump and potential prime loss; replacing it restores a dry, secure closure.
• Fluid System Integrity — Correct sealing at the drain cap is essential for maintaining pump pressure and preventing contamination ingress during operation or storage.

The drain cap o-ring creates a compression seal between the drain plug or cap and the pump housing, preventing fluid from escaping at the service point. On centrifugal and trash pumps, this seal is exposed to water, debris-laden fluid, and repeated drain cycles, which gradually degrade the elastomer and cause it to lose its ability to compress evenly. When the o-ring fails, fluid leaks from the drain point during operation, prime can be compromised, and the surrounding housing can suffer corrosion or debris intrusion. Replacing the o-ring at the first sign of seepage keeps the drain assembly tight and the pump ready for continuous use.

For fitment questions or help confirming compatibility with your specific unit, contact the DHS Equipment team 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.

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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.