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The 8 Best thread sealants of 2024

Are you trying to find thread sealants among various brands on the market but aren’t sure where to begin? To assist you in finding the right one, we’ve put together a list of the 7 best to help you pick the perfect one!

We investigated and evaluated a number of the top-selling thread sealants on the market in order to create our list of the best. Making a decision among the many options available is never simple. There are an infinite number of models available, each with a distinct price. And as you’ll find out, the best options aren’t usually the ones you imagine! This comparison is rich and relevant because of the numerous factors that were employed. You will find products featured in this ranking not only based on their pricing but also on their features and other customers reviews. To write this review, we completed 13 hours of research and did 33 thread sealants tests. You won’t need to pick products at random any more. If you’re unsure of what to look for, browse our list and consult the buying guide!

An overview of our top picks

Table of contents

The best thread sealants you can buy today

No. 1
Permatex 59235 High Temperature Thread Sealant, 50 ml Tube , White
  • Locks and seals threaded fittings
  • Resists leakage, vibration loosening, moisture, hydraulic fluids and diesel fuels
  • Lubricates threads for easy assembly and disassembly
  • Parts may be repositioned up to 4 hours after application
  • Suggested Applications: head bolts into through holes, oil PSI sending units and sensors, oil and coolant lines, fuel fittings, rear axle fill plug, brake and power steering fittings
No. 2
Permatex 80632 Thread Sealant with PTFE, 4 oz. , White
  • Economical general-purpose fitting sealant
  • Outperforms tapes and pipe dopes
  • Seals and resists pressure in air, oil, diesel fuel and hydraulic systems
  • Remains pliable at higher and lower temperatures
  • Suggested Applications: Air conditioning fittings, temperature sending fittings, hydraulic fittings
No. 3
Rectorseal 31631 1/4 Pint Brush Top Tru-Blu Pipe Thread Sealant , Blue
  • Adhesives & Sealants
  • Country of manufacture: United States
  • Manufacturer: Rectorseal
No. 4
Rectorseal 25790 1-3/4-Ounce Tube No.5 Pipe Thread Sealant
  • Adhesives & Sealants
  • Country of manufacture: United States
  • Manufacturer: Rectorseal
  • A soft setting, slow drying thread sealant
  • It has withstood the test of time in a variety of uses and is widely known as the -Inchstandard of the industry-Inch
  • Its low coefficient of friction allows tighter joint makeup with lower torque
  • It also breaks out easily without galling, seizing, or damaging threads
  • It is excellent for service where immediate pressurization is necessary
No. 5
Loctite 545 Pneumatic/Hydraulic Pipe Thread Sealant, High Lubricity, High Pressure, No Fillers, Solvent Resistance, for Fine Threaded Fittings | Purple, 36 ml Bottle (PN: 492145)
  • OEM SPECIFIED. Our LOCTITE automotive aftermarket products are not just OEM-specified, they are also designed by auto manufacturers and lab tested. Wherever engines are being built or repaired, LOCTITE is trusted by professionals
  • RELIABLE THREAD SEALING. Designed for locking and sealing high-pressure pneumatic and hydraulic systems.
  • CLEAN FORMULA. The pneumatic/hydraulic sealant contains no fillers or particles that could contaminate system fluids, foul valves or clog fine filters and screens
  • RELIABLE CURE. Works on "as received" fasteners. Controlled locking strength allows easy disassembly
  • MULTI-PURPOSE APPLICATIONS include hydraulic line fittings, brake fittings, transmission fluid fittings and PTO fittings
No. 6
Rectorseal 23710 1-3/4-Ounce Tube T Plus Pipe Thread Sealant , White
920 Consomer Reviews
Rectorseal 23710 1-3/4-Ounce Tube T Plus Pipe Thread Sealant , White
  • Adhesives & Sealants
  • Country of manufacture: United States
  • Manufacturer: Rectorseal
No. 7
Loctite PST 592 Thread Sealant for Automotive: Low-Pressure, High-Viscosity, Anaerobic, Prevents Galling | Opaque, Off-White, 6 ml Tube (PN: 483631), 0.20 Ounce
  • OEM SPECIFIED. Our LOCTITE automotive aftermarket products are not just OEM-specified, they are also designed by auto manufacturers and lab tested. Wherever engines are being built or repaired, LOCTITE is trusted by professionals.
  • RELIABLE THREAD SEALING. Automotive Grade for Fuel Fillings, Oil and Coolant Lines, Brake and Steering Fittings.
  • RESISTANT. Prevents Leakage in Threaded Metal Fittings up to 400° F.
  • SOUND. Resists leakage, vibration loosening, moisture, hydraulic fluids, and diesel fuels.
  • EASY ASSEMBLY. Lubricates threads for easy assembly and disassembly. Parts may be repositioned up to 24 hours after application.
No. 8
Permatex 56521 High Performance Thread Sealant, 50 ml , White (Packaging may vary)
  • These Are Complete Line Of Heavy-Duty Shop Products
  • These Products On Exceptionally High Order Fulfillment Rates, Breadth Of Available Products
  • Through Creativity, Productivity And Innovation - This Brand Continues To Develop The Finest Automotive Accessories
  • Part number: 56521
No. 9
Rectorseal 23631 1/4 Pint Brush Top T Plus 2 Pipe Thread Sealant
  • Adhesives & Sealants
  • Country of manufacture: United States
  • Manufacturer: Rectorseal
  • Non-hardening thread sealant containing PTFE plus synthetic fibers
  • These fibers dispersed in a resinous base combined with inert mineral fillers provide maximum sealing performance
  • Its low coefficient of friction allows tighter joint makeup with lower torque
  • It also breaks out easily without galling, seizing, or damaging threads
  • It is excellent for service where immediate pressurization is necessary
SaleNo. 10
1 Pc of 76001 Blue Monster Pipe Thread Sealant, 4 Oz
  • Versatile Pipe Sealant: The 76001 Blue Monster Pipe Thread Sealant is a reliable and versatile solution designed to create a durable seal on threaded pipes.
  • Easy Application: With a user-friendly 4-ounce size, this thread sealant is easy to apply, making it suitable for both DIY enthusiasts and professional plumbers.
  • High-Temperature Resistance: Engineered to withstand extreme temperatures, the Blue Monster Pipe Thread Sealant excels in environments where heat resistance is crucial.
  • Long-lasting Performance: Formulated for durability, this pipe thread sealant ensures a long-lasting seal, reducing the need for frequent reapplications.
  • Chemical and Corrosion Resistance: The sealant offers exceptional resistance to chemicals and corrosion, enhancing its suitability for a wide range of applications.
No. 11
LA-CO 42019 Slic-Tite Premium Thread Sealant Paste with PTFE, -50 to 500 Degree F Temperature, 1/2 pt Jar with Brush in Cap , White
  • LA-CO Slic-Tite is the premium thread sealant paste that can be used on metal, PVC, CPVC and ABS plastic pipe threads
  • For sealing water, air, steam, natural gas, LP gas, refrigerants, ammonia, gasoline, ethanol and oil
  • Paste washes off hands and clothing easily
  • Paste should be applied to a thickness of at least twice the depth of the thread root to ensure an adequate amount gets into the joint.
  • Pressures: 3,000 PSI (204 BAR) for gas; 10,000 PSI (680 BAR) for liquid
  • Pipe Thread Types: For use with taper-taper threads, such as ANSI/ASME NPT, British BS 21 type BSPT, Australian AS 1722.1 type RC/R
SaleNo. 12
LOCTITE PST 565 Thread Sealant: High Performance, High Viscosity, Rapid Cure, Acrylic Thread Sealant, Anareobic, Replaces Tapes and Pipe Dopes White, 1.69 fl oz Tube (PN: 483629)
  • OEM SPECIFIED. Our LOCTITE automotive aftermarket products are not just OEM-specified, they are also designed by auto manufacturers and lab tested. Wherever engines are being built or repaired, LOCTITE is trusted by professionals.
  • RELIABLE THREAD SEALING. Cures rapidly to withstand 10,000 PSI.
  • UNIQUE. Replaces most tapes and pipe dopes and pre-coated parts.
  • MULTI-PURPOSE APPLICATIONS. Stainless steel fittings, Head bolts into through holes, Oil psi- sending units/sensors, Oil and coolant lines
  • SOLUTION. Specifically formulated for metal & Tapered pipe thread fittings.
SaleNo. 13
Oatey 15802 Hercules Megaloc Multi-Purpose Thread Sealant, 1.1 oz.
  • Odorless formula is non-separating, non-flammable and non-hazardous. Seals plastic and metal pipes and fitting.
  • Wipes clean from hands and tools and washes out of clothes.
  • Performs over a range from -50 degrees Fahrenheit to 400 degrees Fahrenheit.
  • Safe for drinking water line. Sets soft with no cure time required.
  • Resists hardening and cracks. Hydraulic resistant to 12,000 PSI.
No. 14
Tapewell Yellow Gas Pipe Thread Sealant Tape - Pack of 1-260" Length 1/2" Width Thread Seal Tape - for Propane, Natural Gas, and More
  • EASY APPLICATION: Effortlessly seal gas pipes with our yellow thread sealant tape – designed for a smooth and user-friendly experience, making it an ideal choice for professional plumbers.
  • DURABLE SEAL: Ensure long-lasting protection against leaks with our gas line tape. The tape's sufficient tensile strength provides a reliable and durable seal for various applications, including propane, natural gas, butane, and more.
  • DISTINCT YELLOW COLOR: Our tape's distinct yellow color not only ensures visibility for accurate application but also signifies its compatibility with gas-related projects, offering a reliable solution for home improvement and plumbing tasks.
  • VERSATILE COMPATIBILITY: Tailored for gas pipes of all sizes, our sealing tape is a versatile solution suitable for a wide range of applications, including thread sealing for propane, natural gas, and other gas-related projects in homes and industrial settings.
  • PROFESSIONAL-GRADE QUALITY: Trusted by plumbers and DIYers alike, our gas line thread sealant tape boasts a professional-grade quality, combining the reliability of TPFE sealing with a smooth texture. Enhance your gas connections with a safe and effective solution for all your thread sealing needs.
SaleNo. 15
ITW Devcon 80632 Permatex Thread Sealant with PTFE, 4 oz Can, White
  • Outperforms tapes and pipe dopes.
  • Seals and resists pressure in air, oil, diesel fuel and hydraulic systems.
  • Remains pliable at high and low temperatures.
  • Capacity Vol.: 4 oz.
  • Packing Type: Can.
SaleNo. 16
Refrigeration Technologies RT201B Nylog Gasket/Thread Sealant, 30 ml (1 Pack)
8,003 Consomer Reviews
Refrigeration Technologies RT201B Nylog Gasket/Thread Sealant, 30 ml (1 Pack)
  • Will not Contaminate Systems
  • Seals Flares and Threaded Connections
  • Lubricates O-Rings and Gaskets
  • Approved by OEM Manufacturers
No. 17
Hercules 15620 1/2PT RealTuf T Sealant, 8 oz., White
  • MULTI-PURPOSE WHITE PTFE THREAD SEALANT: Uses a unique system of fine-grain PTFE particles to fill cracks and thread imperfections
  • SOFT SET WITH NO CURE TIME: Forms leak-free joints that can be tested and put into service immediately with no cure time required, and it holds tight against expansion, vibration, and contraction
  • HEAVY DUTY: Withstands temperatures from -200 degrees Fahrenheit to 500 degrees Fahrenheit, and it has a maximum working hydraulic pressure of 12,000 PSI
  • COMPATIBILITY: Can be used on all metal, PVC, ABS, and CPVC plastic lines carrying water, steam, caustics, and dilute acids, and it is suitable for use with all liquids and gases except for oxygen
  • EASY TO APPLY: Brushable and non-separating for easy application, and it will not run or drip from joints
SaleNo. 18
Rectorseal 25631 4-Ounce No. 5 Pipe Thread Sealant , Yellow , 4 fl. oz.
  • Adhesives & Sealants
  • Country of manufacture: United States
  • Manufacturer: Rectorseal
  • Pipe thread sealant
  • Soft set slow drying compound which seals, lubricates and protects threaded pipe and fittings
  • Can be pressurized immediately for piping up through 2" and 100 psi for natural gas, air and water only
  • Ideal for application with a wide variety of fluids and gases including potable water applications
  • Recommended for use on threaded galvanized steel, iron, brass, copper, aluminum, stainless steel, polyethylene, fiberglass reinforced and PVC pipe
SaleNo. 19
Millrose Mill-Rose 76001 Monster Heavy-Duty Industrial Grade with PTFE, 4 Fl. Oz, Blue
  • Adheres to oily threads
  • Specially formulated for production line use
  • Inert and compatible with a very wide range of materials
  • Use Blue Monster on threads made from all metals, PVC, CPVC, ABS and nylon plastic pipe
SaleNo. 20
LOCTITE PST 592 Thread Sealant for Automotive: Low-Pressure, High-Viscosity, Anaerobic, Prevents Galling | Opaque, Off-White, 50 ml Tube (PN: 483630)
  • OEM SPECIFIED. Our LOCTITE automotive aftermarket products are not just OEM-specified, they are also designed by auto manufacturers and lab tested. Wherever engines are being built or repaired, LOCTITE is trusted by professionals.
  • RELIABLE THREAD SEALING. Automotive Grade for Fuel Fillings, Oil and Coolant Lines, Brake and Steering Fittings.
  • RESISTANT. Prevents Leakage in Threaded Metal Fittings up to 400° F.
  • SOUND. Resists leakage, vibration loosening, moisture, hydraulic fluids, and diesel fuels.
  • EASY ASSEMBLY. Lubricates threads for easy assembly and disassembly. Parts may be repositioned up to 24 hours after application.

How to choose a good thread sealants

Does the idea of finding a fantastic thread sealants make you anxious? When it comes to purchasing this product, specifically when deciding which model to select, has your head been spinning between options? You are not alone if that is the case. We are aware of the pressure involved in the purchasing process!

Your presence here indicates that you are interested in thread sealants. Before choosing which product would be the best for your needs after being inundated with information, locate a reliable source with genuine selections. You can get that information from a variety of sources, including buying guides and rating websites, word-of-mouth recommendations from friends and family, online discussion forums where users can share their own experiences, product reviews that can be found all over the internet, and YouTube channels. You can only get the right product through exhaustive analysis. But you realize that’s not always simple. In order to ease your concerns, we have taken the time to develop a list of the top thread sealants products available right now. You might be wondering how we came up with the list. How was this buying guide developed?

First, we used our algorithms to gather as much reliable data as we could about these products. To verify all the data gathered, we used both artificial intelligence and a lot of algorithms.
Then, our experts used criteria that are recognized in the business to evaluate them according to their quality to price ratio, allowing us to choose the top thread sealants on the market right now!

The selection of the goods is not arbitrary. Before creating a list, we take into account a number of factors. Below are some of the criteria discussed:

Brand Value: What happens if you choose a dubious brand just because it appears to be a good deal? So the likelihood of receiving a product with a short shelf life increases. That is due to the fact that well-known brands have a reputation to uphold, while others do not. Top thread sealants brands strive to provide some distinctive traits that set them apart from the competition. So, hopefully one or more of the items on our list will be perfect for you.

Features: Useful features are all you need, not tons of them. We consider the important aspects and select the top thread sealants based on those.

Specifications: Numbers always help you measure the quality of a product in a quantitative way. We try to find products with higher specifications, but with the right balance.

Quality: A product’s quality may always be quantified with the aid of numbers. We look for goods with better standards that strike the proper balance. The best quality product that gets highly appreciated and recommended by experienced users.

Customer ratings:  Would it be accurate to suggest that the thread sealants were used by hundreds of customers before you? Superior ratings indicate that many customers had better service.

Customer Reviews: Like ratings,  provide you with accurate and reliable information about the product from genuine customers. Customer ratings are very important to all of us because they contain accurate and reliable information about the customer service we received from several hundred customers.

Seller Rank: This is very intriguing! Not only do you need a good thread sealants, you also need a product with rising sales that is trendy. It accomplishes two goals. First, the expanding user base proves the quality of the product. Second, given that number, producers must be able to offer greater quality and after-sales support.

Value: You get what you pay for, they say, so consider the value. Cheap isn’t always good and expensive isn’t always bad. However, that does not imply that spending a lot of money on a product that is flashy but underwhelming is a good idea. Before adding them to the list, we make an effort to evaluate how much value you can get for your money from your thread sealants.

Durability: Durability and reliability are closely related concepts. You will benefit from a strong and long-lasting thread sealants for months and years to come.

Product availability: Products come and go, and new ones replace the old ones. Most likely, a few new features and required changes were made. What use is it to use a supposedly good product if the maker no longer supports it? We make an effort to highlight products that are current and offered by one or more trustworthy sellers, if not more.

Negative Reviews: Yes, we do take that into account as well! The goods with the majority of bad reviews are filtered out and disregarded when we choose the best-rated one on the market.

These are the standards by which we selected our thread sealants. Do we end our process there? Hell no. The most crucial fact about us that you should be aware of is that we regularly update our website with current and pertinent information. We have one more layer of filtration since we place the greatest importance on reader satisfaction. Please let us know if any product included here is incorrect, irrelevant, subpar, or simply out of date. We always value your opinions, and we’ll work hard to make any necessary corrections to our list in response to them.

Why should you believe us?

There are now thousands of possibilities for these products on Amazon, but choosing the best one can be difficult and time-consuming. And what thread sealants should you purchase in 2022?

This guide is the result of more than 10 years of experience in researching, testing and writing about many topics. Each member of our team is an authority in their area. We read every article we could find online and every consumer review on every retail website for seven hours. Additionally, we discovered a ton of websites that offered helpful resources, including buying tips and thorough information on thread sealants.