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๐ง Seal it fast, seal it right โ the proโs choice for unstoppable pipes!
RectorSeal Tru-Blu 31631 is a fast-drying, PTFE-enriched pipe thread sealant designed specifically for high vibration and thermal expansion environments. Compatible with a wide range of materials including metals and plastics, it lubricates and protects threads while providing a flexible, water-resistant seal. Made in the USA and trusted by professionals, itโs ideal for plumbing, HVAC, and industrial applications.

| ASIN | B0012YO0Z4 |
| Best Sellers Rank | #2,408 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #7 in Industrial Thread Sealants |
| Brand | Rectorseal |
| Brand Name | Rectorseal |
| Color | Blue |
| Compatible Material | Polyvinyl Chloride |
| Customer Reviews | 4.7 out of 5 stars 2,132 Reviews |
| Global Trade Identification Number | 00021449316316 |
| Included Components | Unit^Instruction Guide |
| Item Dimensions | 2 x 2 x 3.5 inches |
| Item Form | Paste |
| Item Type Name | Pipe Sealant |
| Item Weight | 6.72 ounces |
| Item dimensions L x W x H | 2 x 2 x 3.5 inches |
| Manufacturer | The Rectorseal Corporation |
| Material | Polytetrafluoroethylene |
| Material Type | Polytetrafluoroethylene |
| Model | 31631 |
| Number of Items | 1 |
| Number of Packs | 1 |
| Part Number | 31631 |
| Style | Thread Sealants |
| Style Name | Thread Sealants |
| Surface Recommendation | Pipe |
| UPC | 021449316316 |
| Unit Count | 1 Count |
| Warranty Description | Warranty |
| Water Resistance Level | Water Resistant |
M**L
Sticky stuff that mostly works
Since Iโm the default handyman dad for our house, I grabbed this Tru-Blu for a leaky threaded fitting on the line to our living room humidifier. It seals fast and doesnโt drip everywhere, which is nice. I do wish the brush in the lid was a bit stiffer though. It feels floppy and messy sometimes. Still, the joint has stayed dry so far ๐
P**D
Plumbing like a pro?
I am not a professional plumber but needed to replace my hot water heater. I used this in addition to PTFE tape and it sealed everything up beyond expectation - no leaks whatsoever. Very pleased with the results!
K**N
Works like it should!
Only ones I use! Learned it from a contractor who builds houses, fixes pipes, etc. this is all he uses also! Great strong stuff! Will stop any leaks! Easy to use, kind of messy but easy enough to wipe.
D**K
Nice
Good product
A**X
Forget teflon tape
I've been using teflon tape forever but I've just always had mixed results with it. It can work great sometimes but you have to be pretty exact with how you apply it to threads and in alot of high pressure water line situations, especially at piping close to the water source, you'll get tiny leaks with it even if you thread it in the correct direction etc. I had a situation recently where I was adding a new water line and attaching a female to female coupling to another adaptor to connect a hose spigot with a 3/4" male end to a hose outlet with a 1/2" female. Using all of these intermediary line couplings made more areas at risk for water to leak. No matter how many times I retaped all the connections with teflon, replaced and reseated the rubber washer, tightened with a wrench almost to the point of no return etc... I could just not get these connections to stop shedding water once I turned the main water supply back on. I was about to jump off a bridge. I know that you're not supposed to use any thread sealant with garden hose threads because of the rubber washer blah blah but the washer alone just wasn't cutting it. The washer alone simply wasn't compressing all of the water out and that water was still traveling up the threads after the rubber washer interface. I swapped out the teflon for this liquid thread sealant and finally got a water tight seal across both the coupler and adaptor interfaces. Thank god. Don't listen to anyone's advice. You can use thread sealant on garden hoses and might need to in some situations even with that internal washer. If you've got leaky hose connections and a new washer gasket in there still doesn't do the trick, forget teflon tape and just get this stuff. Easier to apply and works 1000x times better at blocking all the water than teflon tape.
C**N
Perfect for what's intended
Works well
R**N
None better!
Only brand I trust and this arrived on time and worked great!
K**S
Recommend!!
Took longer to cure than expected (24+ hours) but was in the lower level where it is quite cool. Did the trick on a compression fitting. 60 PSI and no leaks!!
Trustpilot
2 weeks ago
1 day ago