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No. 5 Pipe Thread Sealant 1.75-fl oz Sealant

Ratings & Reviews for RectorSeal No. 5 Pipe Thread Sealant 1.75-fl oz Sealant

4.5
244
Review
 4.5 out of 5
244 Reviews


85% Recommend this product

Ratings may include incentivized customer reviews.

What Customers Are Saying

Customers overwhelmingly praise this thread sealant for reliable, leak-free performance on gas, water, and automotive fittings, consistently outperforming Teflon tape. Reviewers highlight its ease of application, minimal product needed, and versatility across steel, plastic, and black iron materials. Many appreciate how it lubricates threads for smooth installation. Some report the tube splits or leaks from pressure, requiring cleanup, though this rarely affects the sealant's core performance. A few experienced isolated failures or drying issues. Overall, most customers consider it an effective, industry-standard solution for professional and DIY applications.

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

Best sealant

Would Recommend

Works great

May 14, 2026
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Plumbing

Would Recommend

Love that I was able to easily remove and put the cap back on. Very easy to use without making a mess.

May 12, 2026
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Liquid pipe thread

Would Recommend

Similar to pipe tape, but easier to apply

May 11, 2026
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Apply as needed.

Would Recommend

Its pipe dope...lol

May 8, 2026
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Tighten pipe threads well and let cure overnight.

Would Recommend

Easy to use

May 6, 2026
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Another indispensable item for your RV repair kit

Would Recommend

really good stuff. I keep a tube or two in my kit

May 5, 2026
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As advertised.

Would Recommend

Seals well without hardening.

April 29, 2026
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Perfect for the home DIYer

This product was easy to use and had good viscosity. The sealing properties were good and it did the job that it needed to do.

April 29, 2026
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Works as expected

Would Recommend

Works c

April 27, 2026
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Good product, poor packaging

Product worked great but the container leaked from the top of the packaging.

April 26, 2026
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This stuff is dope!

Would Recommend

Great simple product. Prefer this over thread tape and is definitely more versatile.

April 24, 2026
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