McAlpine Pop-Up Bath & Sink Plug Replacement Fin Washer (45mm x 30mm)

Features

Ensure your bath or kitchen sink holds water effectively with this genuine McAlpine replacement bottom fin washer. Designed specifically for pop-up waste plugs, this essential rubber seal features a flexible, extended fin around the base. When the plug is lowered, this fin folds upwards against the waste housing to create a reliable, watertight seal. If your current plug is struggling to retain water or has become worn and perished, this easy-to-install washer restores full functionality.

• Precision Fit: Engineered to McAlpine’s exacting standards, featuring a 45mm outside diameter and 30mm inside diameter.
• Effective Sealing: The unique "fin" design—standing 6mm tall at its highest point—ensures a secure seal against the waste body, preventing water leakage when the plug is closed.
• Easy Installation: Designed to sit lower on the plug stem, allowing the washer to flex and fold perfectly as the pop-up mechanism is operated.
• Extensive Compatibility: Suitable for a wide range of McAlpine pop-up wastes, including the PUB and PU70 series.
• Durable Material: Crafted from high-quality rubber designed to withstand frequent use, soap, and cleaning agents.

Technical

• Brand: McAlpine
• Part Number: PUPSEAL
• Product Type: Pop-up Waste Fin Washer
• Outside Diameter: 45mm
• Inside Diameter: 30mm
• Height: 6mm (at highest point)
• Design: Extended Fin for Seal
• Compatibility: PUB-CP, PUB-CPB, PUB-WH, PUS70-CP, PUFS70-CP, and PU70-WH

Details

There are few things more frustrating than settling in for a relaxing bath, only to return five minutes later and find the water has drained away. Over time, the rubber seals on pop-up plugs lose their elasticity, become coated in limescale, or simply perish, failing to create a proper vacuum seal in the waste.

Replacing the entire pop-up assembly is often costly, time-consuming, and unnecessary. This replacement fin washer is an inexpensive, simple fix that targets the root cause of the leak. By swapping out just the worn rubber seal, you can restore your bath or sink to perfect working order in seconds, avoiding the need for tools or professional plumbing assistance.