Description:
Permatex High Performance Thread Sealant offers the ultimate sealing power with the added strength of a blue thread locker. This versatile sealant creates an airtight, watertight hold that prevents leaks, loosening, and corrosion, even under high pressures and temperatures. It seals connections up to 1,000 PSI, with a rapid cure capable of withstanding 10,000 PSI, ensuring leak-proof reliability for your toughest jobs. Temperature resistant from -60°F to 300°F, it’s designed specifically for metal and tapered pipe thread fittings, delivering protection against galling, rust, and corrosion over time. Ideal for stainless steel fittings, oil PSI sending units, oil and coolant lines, intake manifold switches, rear axle fill plugs, fuel fittings, and more, this high-performance thread sealant replaces traditional pipe tape and dope with a faster, cleaner application. Keep your metal connections locked and secure without the risk of leaks, making this sealant a must-have for both professional mechanics and DIY enthusiasts who need lasting, high-strength results.
Reviews:
5.0 out of 5 stars Great Seal, Great Heat Resistance
I was installing a three-way valve and I didn’t have the means to pressure test my threaded connections until everything was threaded and sweated in place.Once the rest of the fittings were sweated together, I couldn’t tighten the threaded connections. The first time around, I used teflon tape and it didn’t work well.Next, I tried this permatex sealant because it would make a permanent anaerobic seal, and it can withstand sweating connections nearby. It worked great!The connection has been holding for months now with no water leaks.I recommend wearing nitrile or latex gloves when handling, it’ll let you work more quickly and cleanup easier.
5.0 out of 5 stars Perfect high temperature thread sealant
This thread sealant has never failed me. I used it about a year ago when I installed the coolant reroute onto the back of my Mazdaspeed miata engine. The sealant was used to install the hose barbs into the reroute itself. I also used this when I installed a coolant temperature sensor onto a coolant line on my Miata, this sealant was used on the probe that is screwed into the fitting on the line. The pictures are of the flyin miata coolant reroute and of the in line sensors both of which i used this thread sealant to screw in either the hose barbs into the reroute or the probe into the in line fitting. The sealant has performed flawlessly and never leaked.
5.0 out of 5 stars Great automotive thread sealer
good product for use on automotive threads. was using this after changing transfer case fluid and differential fluid. always works well and when used properly no leaks!
5.0 out of 5 stars Bulletproof seal on metal to metal joints!
I use this for every metal to metal pipe fittings. Teflon tape is good but this thread sealant is much better and easier to use because it allows adjustment of the fittings to line up fittings which doesn't work when using Teflon tape. I make sure final adjustments are made within 1 hour as this sealant does cure in the absence of air in the close fitting metal to metal part of the joint and fully cures in 24 hours. If using on stainless steel or anodized aluminum or other inactive metals it's recommended that you use Permatex Surface Prep Activator to ensure proper cure. I was curious about using it on PVC, Permatex says it's NOT recommended for plastic fittings such as PVC. So I plumbed my shop with PVC and used teflon between the male PVC fittings and female metal fittings on all of my air drops and then use this Permatex 56521 sealant for everything else and it has worked without fail for more than 20 years. It's important if you use pvc to metal pipe be sure that the pvc fitting is the male and threaded into a female metal fitting. If you do it the other way around and use female pvc and thread male metal pipe into the pvc fitting it will expand the pvc over time and it will result in a leak. Just what I learned and hope it helps you out
4.0 out of 5 stars Works well but very little product in 6ml tube.
Product seems to work fine. However, I purchased the small (6ml) tube and I could barely squeeze out two drops to seal a temp sender. This tube DEFINITELY did not contain 6ml. Otherwise I would have given it 5 stars as I like better than tape.
5.0 out of 5 stars Good thread sealant
Use case was to apply sealant to my new rear brake pressure switch for my Harley-Davidson Sportster XL1200C. Applied evenly and this little tube has WAY more (like at least 10X more) than I needed but will be a good addition to the shop. Excellent quality, but note you will have to massage the tube well to get all the fluid to mix easily for a consistent application. Recommended! Don’t settle for less than Permatex. Great value for money and flows evenly.
5.0 out of 5 stars Worked when others failed.
In my Q.C. lab days, I had a partner who would periodically measure, with a precision optical comparator, tooling for machining threads. He had gauge wires to check the pitch, and go-no go gauges for quick checks. I really wish they used the same exacting standards routinely in Asian manufacturing. I have had more sloppy parts, with off-spec. threads since the East dominated the manufacturing of many commodity fittings. I actually got parts with an apology note enclosed, that said, to use lots of PTFE tape to make a good seal. I ran out of S.W.A.K. anaerobic sealant, which was my usual salvation for loose threads. A new supply of that is very pricey. PTFE tape failed, Hardware store pipe sealant failed. So I tried this. It is a lot like S.W.A.K. sealant. I let it setup for a full four hours. I re-pressurized the system, and thankfully, no leaks. I like the way it goes on as a thick fluid.
5.0 out of 5 stars Gets the job done
Used to seal a temperature sensor on my water pump. Convenient size and good consistency if you follow the directions.
Si pega muy bien
Que es muy buen producto
Amazon prime is great for a good deal
High temp sealing paste is what it says, the best part with this product is price on Bolo, half price compared to Ford main dealer. All good
Not drying
I have applied this seal on thread bolt and left it for almost 80 hours, unfortunately still not dry
Good product
Works as expected. No leaks after a short setting and curing period. Used it to seal an oil pressure sensor. Heat resistant
Good product as stated
Fast shiiping A+
Visit the Permatex Store
Permatex 56521 High Performance Thread Sealant ,Thread Lock & Screw Glue for Bolts Nuts & Fasteners to Prevent Loosening & Corrosion, Removable w/ Hand Tools 50 ml
AED10785
Quantity:
Order today to get by 7-14 business days
Delivery fee of AED 20. Free for orders above AED 200.
Imported From: United States
At BOLO, we work hard to ensure the products you receive are new, genuine, and sourced from reputable suppliers.
BOLO is not an authorized or official retailer for most brands, nor are we affiliated with manufacturers unless specifically stated on a product page. Instead, we source verified sellers, authorized distributors or directly from the manufacturer.
Each product undergoes thorough inspection and verification at our consolidation and fulfilment centers to ensure it meets our strict authenticity and quality standards before being shipped and delivered to you.
If you ever have concerns regarding the authenticity of a product purchased from us, please contact Bolo Support. We will review your inquiry promptly and, if necessary, provide documentation verifying authenticity or offer a suitable resolution.
Your trust is our top priority, and we are committed to maintaining transparency and integrity in every transaction.
All product information, images, descriptions, and reviews originate from the manufacturer or from trusted sellers overseas. BOLO is not affiliated with, endorsed by, or an authorized retailer for most brands listed on our website unless stated otherwise.
While we strive to display accurate information, variations in packaging, labeling, instructions, or formulation may occasionally occur due to regional differences or supplier updates. For detailed or manufacturer-specific information, please contact the brand directly or reach out to BOLO Support for assistance.
Unless otherwise stated, all prices displayed on the product page include applicable taxes and import duties.
BOLO operates in accordance with the laws and regulations of United Arab Emirates. Any items found to be restricted or prohibited for sale within the UAE will be cancelled prior to shipment. We take proactive measures to ensure that only products permitted for sale in United Arab Emirates are listed on our website.
All items are shipped by air, and any products classified as “Dangerous Goods (DG)” under IATA regulations will be removed from the order and cancelled.
All orders are processed manually, and we make every effort to process them promptly once confirmed. Products cancelled due to the above reasons will be permanently removed from listings across the website.
More from this brand
Similar items from “Thread Lock”
Share with
Or share with link
https://www.bolo.ae/products/UO000SJ7IUV
Visit the Permatex Store
Permatex 56521 High Performance Thread Sealant ,Thread Lock & Screw Glue for Bolts Nuts & Fasteners to Prevent Loosening & Corrosion, Removable w/ Hand Tools 50 ml
AED10785
Quantity:
Order today to get by 7-14 business days
Delivery fee of AED 20. Free for orders above AED 200.
Imported From: United States
At BOLO, we work hard to ensure the products you receive are new, genuine, and sourced from reputable suppliers.
BOLO is not an authorized or official retailer for most brands, nor are we affiliated with manufacturers unless specifically stated on a product page. Instead, we source verified sellers, authorized distributors or directly from the manufacturer.
Each product undergoes thorough inspection and verification at our consolidation and fulfilment centers to ensure it meets our strict authenticity and quality standards before being shipped and delivered to you.
If you ever have concerns regarding the authenticity of a product purchased from us, please contact Bolo Support. We will review your inquiry promptly and, if necessary, provide documentation verifying authenticity or offer a suitable resolution.
Your trust is our top priority, and we are committed to maintaining transparency and integrity in every transaction.
All product information, images, descriptions, and reviews originate from the manufacturer or from trusted sellers overseas. BOLO is not affiliated with, endorsed by, or an authorized retailer for most brands listed on our website unless stated otherwise.
While we strive to display accurate information, variations in packaging, labeling, instructions, or formulation may occasionally occur due to regional differences or supplier updates. For detailed or manufacturer-specific information, please contact the brand directly or reach out to BOLO Support for assistance.
Unless otherwise stated, all prices displayed on the product page include applicable taxes and import duties.
BOLO operates in accordance with the laws and regulations of United Arab Emirates. Any items found to be restricted or prohibited for sale within the UAE will be cancelled prior to shipment. We take proactive measures to ensure that only products permitted for sale in United Arab Emirates are listed on our website.
All items are shipped by air, and any products classified as “Dangerous Goods (DG)” under IATA regulations will be removed from the order and cancelled.
All orders are processed manually, and we make every effort to process them promptly once confirmed. Products cancelled due to the above reasons will be permanently removed from listings across the website.
Description:
Permatex High Performance Thread Sealant offers the ultimate sealing power with the added strength of a blue thread locker. This versatile sealant creates an airtight, watertight hold that prevents leaks, loosening, and corrosion, even under high pressures and temperatures. It seals connections up to 1,000 PSI, with a rapid cure capable of withstanding 10,000 PSI, ensuring leak-proof reliability for your toughest jobs. Temperature resistant from -60°F to 300°F, it’s designed specifically for metal and tapered pipe thread fittings, delivering protection against galling, rust, and corrosion over time. Ideal for stainless steel fittings, oil PSI sending units, oil and coolant lines, intake manifold switches, rear axle fill plugs, fuel fittings, and more, this high-performance thread sealant replaces traditional pipe tape and dope with a faster, cleaner application. Keep your metal connections locked and secure without the risk of leaks, making this sealant a must-have for both professional mechanics and DIY enthusiasts who need lasting, high-strength results.
Reviews:
5.0 out of 5 stars Great Seal, Great Heat Resistance
I was installing a three-way valve and I didn’t have the means to pressure test my threaded connections until everything was threaded and sweated in place.Once the rest of the fittings were sweated together, I couldn’t tighten the threaded connections. The first time around, I used teflon tape and it didn’t work well.Next, I tried this permatex sealant because it would make a permanent anaerobic seal, and it can withstand sweating connections nearby. It worked great!The connection has been holding for months now with no water leaks.I recommend wearing nitrile or latex gloves when handling, it’ll let you work more quickly and cleanup easier.
5.0 out of 5 stars Perfect high temperature thread sealant
This thread sealant has never failed me. I used it about a year ago when I installed the coolant reroute onto the back of my Mazdaspeed miata engine. The sealant was used to install the hose barbs into the reroute itself. I also used this when I installed a coolant temperature sensor onto a coolant line on my Miata, this sealant was used on the probe that is screwed into the fitting on the line. The pictures are of the flyin miata coolant reroute and of the in line sensors both of which i used this thread sealant to screw in either the hose barbs into the reroute or the probe into the in line fitting. The sealant has performed flawlessly and never leaked.
5.0 out of 5 stars Great automotive thread sealer
good product for use on automotive threads. was using this after changing transfer case fluid and differential fluid. always works well and when used properly no leaks!
5.0 out of 5 stars Bulletproof seal on metal to metal joints!
I use this for every metal to metal pipe fittings. Teflon tape is good but this thread sealant is much better and easier to use because it allows adjustment of the fittings to line up fittings which doesn't work when using Teflon tape. I make sure final adjustments are made within 1 hour as this sealant does cure in the absence of air in the close fitting metal to metal part of the joint and fully cures in 24 hours. If using on stainless steel or anodized aluminum or other inactive metals it's recommended that you use Permatex Surface Prep Activator to ensure proper cure. I was curious about using it on PVC, Permatex says it's NOT recommended for plastic fittings such as PVC. So I plumbed my shop with PVC and used teflon between the male PVC fittings and female metal fittings on all of my air drops and then use this Permatex 56521 sealant for everything else and it has worked without fail for more than 20 years. It's important if you use pvc to metal pipe be sure that the pvc fitting is the male and threaded into a female metal fitting. If you do it the other way around and use female pvc and thread male metal pipe into the pvc fitting it will expand the pvc over time and it will result in a leak. Just what I learned and hope it helps you out
4.0 out of 5 stars Works well but very little product in 6ml tube.
Product seems to work fine. However, I purchased the small (6ml) tube and I could barely squeeze out two drops to seal a temp sender. This tube DEFINITELY did not contain 6ml. Otherwise I would have given it 5 stars as I like better than tape.
5.0 out of 5 stars Good thread sealant
Use case was to apply sealant to my new rear brake pressure switch for my Harley-Davidson Sportster XL1200C. Applied evenly and this little tube has WAY more (like at least 10X more) than I needed but will be a good addition to the shop. Excellent quality, but note you will have to massage the tube well to get all the fluid to mix easily for a consistent application. Recommended! Don’t settle for less than Permatex. Great value for money and flows evenly.
5.0 out of 5 stars Worked when others failed.
In my Q.C. lab days, I had a partner who would periodically measure, with a precision optical comparator, tooling for machining threads. He had gauge wires to check the pitch, and go-no go gauges for quick checks. I really wish they used the same exacting standards routinely in Asian manufacturing. I have had more sloppy parts, with off-spec. threads since the East dominated the manufacturing of many commodity fittings. I actually got parts with an apology note enclosed, that said, to use lots of PTFE tape to make a good seal. I ran out of S.W.A.K. anaerobic sealant, which was my usual salvation for loose threads. A new supply of that is very pricey. PTFE tape failed, Hardware store pipe sealant failed. So I tried this. It is a lot like S.W.A.K. sealant. I let it setup for a full four hours. I re-pressurized the system, and thankfully, no leaks. I like the way it goes on as a thick fluid.
5.0 out of 5 stars Gets the job done
Used to seal a temperature sensor on my water pump. Convenient size and good consistency if you follow the directions.
Si pega muy bien
Que es muy buen producto
Amazon prime is great for a good deal
High temp sealing paste is what it says, the best part with this product is price on Bolo, half price compared to Ford main dealer. All good
Not drying
I have applied this seal on thread bolt and left it for almost 80 hours, unfortunately still not dry
Good product
Works as expected. No leaks after a short setting and curing period. Used it to seal an oil pressure sensor. Heat resistant
Good product as stated
Fast shiiping A+
More from this brand
Similar items from “Thread Lock”
Share with
Or share with link
https://www.bolo.ae/products/UO000SJ7IUV