Thomas Dudley Sink Waste Washer - 1.1/4 inch

The Thomas Dudley Sink Waste Washer is designed for reliable performance in both kitchen and bathr...

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The RangeThomas Dudley Sink Waste Washer 1.1/4" - Pwatra370290 - Essential For Plumbing - Neutral
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OnBuy.comThomas Dudley Sink Waste Washer 1.1/4" - Pwatra370290 - Essential For Plumbing 5051258019387
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B&QB&Q - Sink Waste Washer 1.1/4"Pwatra370290Perfect For Plumbing
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eBayThomas Dudley Sink Waste Washer 1.1/4"" - PWATRA370290
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Product Information

Full details

The Thomas Dudley Sink Waste Washer is an essential plumbing component designed for DIYers and professional plumbers seeking a dependable, leak-proof seal for 1.1/4 inch sink waste outlets. It offers excellent compatibility for both kitchen and bathroom installations, ensuring consistent drainage performance; however, users should verify their specific pipe diameter before purchase, as it is strictly sized for 1.1/4 inch standard fixtures.

All features

Model Part NumberPWATRA370290
BrandThomas Dudley

Extended Product Information

FAQs

Can I use this washer on a 1.1/2 inch sink waste?

No, this washer is specifically sized for 1.1/4 inch outlets and will not provide a proper seal on larger pipes.

Does this washer require plumber's putty?

While the washer creates the primary seal, some installers prefer a thin layer of plumber's putty for added security, though it is not strictly required if the surface is clean.

Is this suitable for both kitchen and bathroom sinks?

Yes, as long as the sink waste outlet matches the 1.1/4 inch specification.

How often should the washer be replaced?

It should be replaced if you notice leaks, or during any major plumbing maintenance where the waste fitting is removed.

Is this washer compatible with metal and plastic waste fittings?

Yes, it is designed to work effectively with both material types commonly found in standard sinks.

Troubleshooting

Water still leaking after installation

Ensure the washer is seated flat and that the waste nut is tightened evenly. Check for debris on the sink surface.

Washer appears too small

Verify that your sink outlet is indeed 1.1/4 inches. This washer is not compatible with 1.1/2 inch waste outlets.

Washer deforms when tightening

Avoid over-tightening with excessive force. Hand-tighten until snug, then use a tool only for a final quarter-turn.

Pros and Cons

Pros

  • High-quality construction for long-term reliability
  • Ensures a tight seal to prevent water damage
  • Easy to install without specialized plumbing tools
  • Universal fit for standard 1.1/4 inch waste outlets

Cons

  • Not suitable for larger 1.1/2 inch waste pipes
  • May require manual tightening to achieve proper compression
  • Not intended for non-standard or designer waste fittings

Setup, Compatibility & Care

To install, first ensure the sink waste area is clean and free of old sealant or debris. Place the washer over the waste tailpiece, ensuring it is seated evenly. Tighten the waste nut carefully; do not overtighten, as this can compress the material too far. This washer is compatible with all standard 1.1/4 inch threaded waste outlets. For maintenance, check the seal annually for any signs of hardening or degradation caused by harsh chemical drain cleaners. If you notice dampness around the waste fitting, remove the nut, inspect the washer for cracks, and replace it as necessary.

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