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What is NPT and are NPT cable glands right for your application?
- The National Pipe Thread (NPT) designation is the U.S. national technical standard.
- NPT standards have a 60° angle that allows them to form a seal when torqued (within adequate specifications).
Profile of NPT cable glands
- 1/4"NPT fit 0.12-0.25inch wires' diameter
- 3/8"NPT fit 0.20-0.39inch wires' diameter
- 1/2"NPT fit 0.24-0.47inch wires' diameter
- 3/4"NPT fit 0.52-0.71inch wires' diameter
- 1"NPT fit 0.71-0.98inch wires' diameter
- 1-1/4"NPT fit 0.87-1.25inch wires' diameter
Waterproof&Dustproof IP68
- Static working temperatures of -40 to 212°F (-40 to 100°C). Cord grips work great for both indoor and outdoor environments.
Use with confidence
- Made from UL-approved material: nylon PA66 plastic to serve more extended time.
- With each mark size, easy for you to select the right strain relief cord connector
High-quality rubber washer
- Thick rubber sealing rings offer a high IP Level and are flexible and have no hurt Cables.
Applied for a wide range of cables
- The taper on NPT threads allows them to form a seal when torqued, which can be used as a junction box connector
David L Mertz
Reviewed in the United States on February 6, 2025
Seem to be of decent quality.
Customer
Reviewed in the United States on February 4, 2025
These are fairly priced for what they are. Good quality, look nice
Keith Soldner
Reviewed in the United States on February 1, 2025
I had a broken strain relief on an air compressor power cord. This was an exact match. I was concerned at first because the opening seemed pretty large for the size of the cord but it tightened down perfectly. I now have 11leftovers but it was worth it to repair the air compressor. The other 11 will go in my "i'll use these someday" box.
Keith
Reviewed in the United States on January 30, 2025
Worked very well, strong, and durable. A fraction of the cost of metal or other options.
Npinc
Reviewed in the United States on January 30, 2025
Works perfectly as described
Mack
Reviewed in the United States on January 26, 2025
Excellent product woks greatEasy to use and install
Ted Benvick
Reviewed in Canada on October 19, 2024
Rubber gasket could have been a little bigger but worked as advertised
Chadnic
Reviewed in the United States on April 28, 2024
These worked great and I had no issues. They are water tight and seal up nice. I did make some slight adjustments to make them work even better for my way of doing things. Here are some pro-tips that worked for me:1. To slide wire through the strain relief easier, I put a little dielectric grease on the wire jacket to help them slide through nice any easy once they got packed with wire and were really tight. I would just wipe the wire as I pulled it out the other side so it didn't have any residue. This had the added bonus of adding a little bit of extra water sealing just in case there was a drop or two that might sneak passed, but for the most part is was just to make it easier to pull through as I think these would have been plenty waterproof without it.2. I did not drill the hole to 3/4 exactly, I used 19mm which was a but shy. Being that I was drilling a hole in plastic, this was perfect and the strain relief threaded right in and stayed tight even without the backing nut. Of course I used the nut still, but it was nice to get that great seal. If you drilled yours at 3/4 and it's a bit loose, a few wraps of plumbers tape might work if you are close and it should tighten up nice again without the nut on the back side, but like me, you should still use the nut.3. Treating the outside with a little bit of armor all wipe over the plastic if it will be exposed to prolonged sunlight and weather will help make sure it doesn't get brittle over the years.I hope this helped!
RON
Reviewed in the United States on October 13, 2022
I knew about these box connectors as I was an Electrician before retiring. Recently wanted to add an aerator to my septic tank. Had a difficult time trying to get a pass thru fitting of ant sort for the 1/2" hose to go thru the riser. They sell bulkhead fittings but they're barbed on each end. This means that you're escentially splicing the hose rather than just having it pass thru and sealed around it at the same time. Difficult time trying to find a rubber grommet as well. Seems that Electricians have it figured out while plummers are behind in this matter. You don't want to splice wires when you don't have to. Especially when you have a multiconductor cable or cord and need to maintain water tight or environmental integrity. This provides a nice seal around the hole with an "O" ring and the compression nut can be virtually tightened by hand, so as not to collapse the hose (though in this instance the hose supplied with the pump has a thick wall. I did not however, use the gland nut to attach to the riser but instead, used a 1" plastic bushing. Nice rounded edge and more professional looking. All in all good deal. Something to tell your friends about. Don't expect that you'll find this at HOME DEPOT or LOWES.
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