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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

Associate assistance

Would Recommend

Got the job done perfectly. Thanks to the help I got from one of your associates. It’s nice to have folks that know what they are doing.

April 23, 2025
From Brass 1_SLASH_4-in Compression Cap Fitting Verified Purchaser
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Efficient

Everything

April 21, 2025
Verified Purchaser
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Lowe's had exactly what I needed

Would Recommend

It was what I urgently needed to plug an air leak in my Air brake equipped 25 ton RV

April 8, 2025
Verified Purchaser
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Had to get the compression ring seperately

Would Not Recommend

Didn’t have the compression ring

March 25, 2025
Verified Purchaser
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Removal of bar sink

Would Recommend

Removed former bar sink to make room for new remodeled area

March 13, 2025
Verified Purchaser
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Cap

Would Recommend

Did what I needed it to do.

March 9, 2025
Verified Purchaser
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Didn't mention needing a gasket or "teflon tape"

The cap itself fit, but it leaked and it needed something else to stop that water. I used thread seal tape (sometimes called "teflon tape"), and it was pain to put on in the cramped location. I've since read that a gasket (rubber-like or otherwise) also works. I think at minimum there should be a warning, or maybe it could be packaged with a gasket.

February 21, 2025
Verified Purchaser
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way over priced

Would Not Recommend

over priced brass cap for $4

February 7, 2025
Verified Purchaser
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Cap fitting

Would Recommend

The cap worked

January 25, 2025
From Brass 1_SLASH_4-in Compression Cap Fitting Verified Purchaser
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