Thomas Dudley O' Ring 36mm I/D x 3.5mm — 326594
The Thomas Dudley 326594 is an authentic replacement O-ring seal designed specifically for Thomas Dudley external pushfit outlets. Measuring 36mm internal diameter (I/D) with a 3.5mm cross-section thickness, this high-grade elastomeric sealing ring prevents leaks between the cistern outlet and downpipe connections. Engineered from premium, chloramine-resistant rubber, it ensures high flexibility and long-lasting structural resilience against degradation from chemicals and hard water.
Identification Guide:
MPN: 326594 | Application: External Pushfit Outlets | Dimensions: 36mm I/D × 3.5mm Thickness | Material: Premium Synthetic Rubber
Key Features
- Precision Sealing: Delivers a tight hydraulic seal on pushfit joints to stop or prevent weeping at the base of the cistern.
- Dudley OEM Standard: Manufactured to exact factory tolerances to maintain high-efficiency system integrity.
- Chemical Resistant: Built to endure exposure to standard commercial and domestic chemical water treatments.
- Flexible Profile: High elastomer memory ensures the ring retains its circular form even under continuous compressive force.
Installation & Compatibility
This O-ring is primarily engineered to fit seamlessly with the Dudley 50mm (2") Flushpipe (390 x 290mm Tapered 51-41mm) to ensure a dependable, drop-proof joint. When replacing this washer, we recommend cleaning any limescale or debris off the pushfit connector surface before sliding the new lubricated seal into place.



