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Brass 3/8-in Compression Cap Fitting

Ratings & Reviews for ProLine Series Brass 3/8-in Compression Cap Fitting

4.6
252
Review
 4.6 out of 5
253 Reviews


94% Recommend this product

Ratings may include incentivized customer reviews.

What Customers Are Saying

The compression cap appears to be a generally useful and effective product for sealing off water lines, valves, and other plumbing fittings. Many customers found it worked as expected to stop leaks and facilitate home renovation projects, though some noted using a small washer or Teflon tape helped create a tighter seal. While a few had issues with the cap not fitting properly or leaking, the majority reported it as a reliable and versatile solution for various plumbing needs.

Customer review summary generated by AI, including incentivized reviews.
253 Customer Reviews

Great for capping unused hole.

Would Recommend

Plugged whole with washer. Wouldn't plug the 3/8" hole on its own but worked well with 17/32 washer.

February 8, 2023
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Perfect fit

Would Recommend

Exact fit and threads were a match. Stops water coming out of my laundry sink valves that we no longer use

December 25, 2022
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Will need a small faucet washer or leaks water ...

Made well needs a small faucet washer inside .....

December 24, 2022
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Great compression cap

Would Recommend

This item worked great to cap a unused valve under a sink

December 22, 2022
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Easily seals a sink water valve.

Would Recommend

We are having a new dishwasher installed. We needed a cap to seal the valve until the dishwasher arrives.

December 20, 2022
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Worked well for what I needed it for

Would Recommend

Work well for what I needed it for. I was installing my dishwasher and ran into an issue and needed to block off a waterline.

December 19, 2022
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Worked exactly as described

Would Recommend

Worked exactly as described. Solid fitting that will hold up for years

December 19, 2022
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worked perfect to temporarily cap a water line.

Would Recommend

It was the correct size cap for the water hose we were working on.

December 8, 2022
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Metal connecting

Needed something to block a water valve that connected to the toilet, and

November 28, 2022
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It is worth the extra protection on a valve.

Would Recommend

I really like the comfort and peace that comes with adding a extra cap.

November 21, 2022
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It worked for what we needed to do

Would Recommend

It worked correctly for the hose connection we capped off

November 20, 2022
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Gets the job done

Would Recommend

The Proline series compression cap is pretty straightforward. If you have a threaded valve that needs to be stopped then this is what you need. I had a valve with two stems and didn't want to replace it with a single stem valve. This cap helped block the other stem without any leaks.

November 17, 2022
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