Fluidmaster 242 Toilet Fill Valve Seal Replacement Part, Fits 400A Fill Valve , Black

4.6 4.6 out of 5 stars | 3,604 ratings

Price: 1.97

Last update: 09-10-2024


About this item

Extend the lifespan of your 400A toilet fill valve
Easy to install
Direct replacement seal for the universal design 400A fill valve
Fix a broken toilet valve seal without purchasing another fill valve
Quick and simple DIY replacement part; 1 year warranty
Limit one (1) per order
Returns will not be honored on this closeout item

Product information

Technical Details


Top reviews from the United States

Good Advice
5.0 out of 5 stars Nice cheap quick fix, also works on many Kohler Fill Valves
Reviewed in the United States on March 4, 2024
If your toilet continues to trickle long after the floater rises after the flush, it is likely the fill valve not shutting off. Your water agency may detect it as a leak. You can replace the whole valve which is not that expensive, but it is often only this small rubber gasket that loses elasticity after a few years. Moving the floater arm up will usually not stop the water sound like it should if this seal is worn. Many Kohler toilets come with Fluidmaster fill valves with a kohler cap on top, and this will also work on those. This seal saves money and is a much easier job than replacing the whole valve.

You just need to turn off your water supply, remove the valve cap, turn the arm assembly counter-clockwise to unseat it, pull out the old seal and replace it with this one. Reattach clockwise and replace the cap. It is great that they sell this replacement part separately, but why not just make it from a better material that doesn't degrade as easily?
William Diaz
5.0 out of 5 stars Fixed my issue without removing valve
Reviewed in the United States on April 24, 2024
Toilet wouldn't refill at times, and moving the float would start water flow. Never seen this issue in decades, but this toilet is only 2 years old. I replace this seal easily without having to remove the valve, just the top cover and all is good to go, bought two just in case the other toilet acts up.
Rick Ransier
5.0 out of 5 stars Who knew you could get repair parts for a plastic toilet tank valve assembly!
Reviewed in the United States on March 17, 2024
As happens eventually, I noticed the tank fill valve in one of our toilets would make a whistle noise between flushes, indicating that it was leaking. I confirmed that this was not due to a leaking flapper valve, it just stopped reliably sealing the incoming water. No surprise, it's under pressure, right? So to my surprise I actually have installed two of the valve assemblies that this fits, and in 10 minutes I had repaired what was initially a $20 purchase 4 or 5 years ago. These people should be commended for doing their best to keep their products from ending up in the waste stream due to a worn part that costs a fraction of the original assembly and is well within the means of any homeowner to replace. Well Done!
Dave
5.0 out of 5 stars Works perfectly
Reviewed in the United States on May 7, 2024
Easy install just read the directions. Way easier than replacing the whole filler unit and way cheaper.
James Pappalardo
4.0 out of 5 stars it worked
Reviewed in the United States on May 8, 2024
good price and it worked
Namho Kim
5.0 out of 5 stars Best price in Amazon
Reviewed in the United States on April 27, 2024
I found this small tiny item at home depot and other shops, but Amazon sells it cheaper than others. It works great and no issue after installtion about one month ago.
David A Nelson
5.0 out of 5 stars A Dirt Cheap Way To Refurbish Your Tank Valve. My Valve Quit Suddenly.
Reviewed in the United States on October 24, 2023
"Everything is Hard As Heck, Until You Have Done It."
These rubber "valve seals" can be relatively easy to replace.
Turn water off. Lift the plastic cover. Hold the fill valve body with one hand and press the valve cover top then a counter-clockwise turn. (I saw a youtube video)
Reassembly is the reverse of disassembly. In theory, just a clockwise twist.
The trick is: Put thumb on the assembly and press down while you move it 1/4 to 1/2 clockwise turn.
Mine came off easy. But it took a few tries to get it back on.
"Be Prepared!" I also ordered a new valve assembly, just in case. Nod wink!
The interesting thing is this rubber part has been telling me it needed replacement for about a year.
Let me explain. I have a Danco HFX120 HydroFix Toilet Fill Valve I bought two or three years ago. About a year ago, I noticed that a light spray of water was hitting the top of my tank lid. And some would drip on the bathroom floor. My solution was to mop the bath floor more often.
Then, about a year later the valve suddenly refused to fill the toilet tank. I turned the water off, then back on it mysteriously filled right up. But when I flushed again, the fill valve stopped working, again.
How did I live almost 6 decades without experiencing this?
While I was ordering a new fill valve, I saw this part and and watched the video for replacement.
When I got my new part, I had the the water and the old part off toot sweet.
However it took me 5 minutes to master the "twist". But when I turned the water on, I Was Done!
The blue tank valve is a brilliant kit, but It's Kind Of Fiddly. For instance, the overfill tube has valve to limit waste. This Is Water Saving Genius! And the fill tube has multiple jets that stir the tank. Downside is it may not stay still. I put brick on the hose to hold it down. Toilet tabs on the left side don't wear out too fast.
So, for me it was extra awesome to fix it, I saved A Lot Of Steps.
And I now have an emergency fill valve in backstock. These things are mostly plastic after all.
Customer image
David A Nelson
5.0 out of 5 stars A Dirt Cheap Way To Refurbish Your Tank Valve. My Valve Quit Suddenly.
Reviewed in the United States on October 24, 2023
"Everything is Hard As Heck, Until You Have Done It."
These rubber "valve seals" can be relatively easy to replace.
Turn water off. Lift the plastic cover. Hold the fill valve body with one hand and press the valve cover top then a counter-clockwise turn. (I saw a youtube video)
Reassembly is the reverse of disassembly. In theory, just a clockwise twist.
The trick is: Put thumb on the assembly and press down while you move it 1/4 to 1/2 clockwise turn.
Mine came off easy. But it took a few tries to get it back on.
"Be Prepared!" I also ordered a new valve assembly, just in case. Nod wink!
The interesting thing is this rubber part has been telling me it needed replacement for about a year.
Let me explain. I have a Danco HFX120 HydroFix Toilet Fill Valve I bought two or three years ago. About a year ago, I noticed that a light spray of water was hitting the top of my tank lid. And some would drip on the bathroom floor. My solution was to mop the bath floor more often.
Then, about a year later the valve suddenly refused to fill the toilet tank. I turned the water off, then back on it mysteriously filled right up. But when I flushed again, the fill valve stopped working, again.
How did I live almost 6 decades without experiencing this?
While I was ordering a new fill valve, I saw this part and and watched the video for replacement.
When I got my new part, I had the the water and the old part off toot sweet.
However it took me 5 minutes to master the "twist". But when I turned the water on, I Was Done!
The blue tank valve is a brilliant kit, but It's Kind Of Fiddly. For instance, the overfill tube has valve to limit waste. This Is Water Saving Genius! And the fill tube has multiple jets that stir the tank. Downside is it may not stay still. I put brick on the hose to hold it down. Toilet tabs on the left side don't wear out too fast.
So, for me it was extra awesome to fix it, I saved A Lot Of Steps.
And I now have an emergency fill valve in backstock. These things are mostly plastic after all.
Images in this review
Customer image Customer image
Naim
5.0 out of 5 stars Worked perfectly
Reviewed in the United States on April 28, 2024
Easy to install, much cheaper than replacing the whole system

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