--- product_id: 12372323 title: "592 Automotive Opaque Thread Sealant - High-Pressure, High-Viscosity, Prevents Galling - 50 ml, 1 Pack" brand: "loctite" price: "€ 31.13" currency: EUR in_stock: true reviews_count: 13 category: "Loctite" url: https://www.desertcart.hr/products/12372323-592-automotive-opaque-thread-sealant-high-pressure-high-viscosity-prevents store_origin: HR region: Croatia --- # High-viscosity for leak-proof seals Resists temps up to 400°F OEM-approved, pro-grade reliability 592 Automotive Opaque Thread Sealant - High-Pressure, High-Viscosity, Prevents Galling - 50 ml, 1 Pack **Brand:** loctite **Price:** € 31.13 **Availability:** ✅ In Stock ## Summary > 🔩 Seal it like a pro—no leaks, no stress, just precision. ## Quick Answers - **What is this?** 592 Automotive Opaque Thread Sealant - High-Pressure, High-Viscosity, Prevents Galling - 50 ml, 1 Pack by loctite - **How much does it cost?** € 31.13 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/12372323-592-automotive-opaque-thread-sealant-high-pressure-high-viscosity-prevents) ## Best For - loctite enthusiasts ## Why This Product - Trusted loctite brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Versatile Application:** Perfect for fuel, oil, coolant, brake, and steering fittings—one sealant to rule them all. - • **Extreme Temperature Defense:** Maintains integrity and prevents leaks even under intense heat up to 400°F—no compromises on performance. - • **Vibration & Moisture Shield:** Stops leaks caused by vibration, moisture, hydraulic fluids, and diesel fuels for long-lasting reliability. - • **Engineered for Professionals:** Trusted by top auto manufacturers and engine builders worldwide for flawless thread sealing. - • **Smooth Assembly & Flexibility:** High-viscosity formula lubricates threads for easy installation and allows repositioning within 24 hours. ## Overview LOCTITE 592 Automotive Opaque Thread Sealant is a 50 ml high-viscosity, OEM-approved solution designed for high-pressure automotive applications. It reliably seals threaded metal fittings against leaks, vibration loosening, moisture, and harsh fluids, while resisting temperatures up to 400°F. Trusted by professionals, it ensures smooth assembly with repositioning flexibility for 24 hours, making it essential for fuel, oil, coolant, brake, and steering system maintenance. ## Description The LOCTITE Automotive Opaque Thread Sealant 592 is a high-performance solution designed for high-pressure applications, offering reliable thread sealing and protection. This 50 ml sealant is OEM-approved, trusted by professionals in engine building and repair, and rigorously tested by leading automotive manufacturers. It delivers secure seals in various applications such as fuel, oil, coolant, brake, and steering fittings. With its high viscosity and resistance to extreme temperatures up to 400°F, it prevents leaks and protects against vibration loosening, moisture, hydraulic fluids, and diesel fuels. The sealant also offers easy assembly and disassembly, allowing parts to be repositioned for up to 24 hours after application. Review: This stuff is great for any threads that are applied to oil connections ... - This stuff is great for any threads that are applied to oil connections on a motorcycle. Highly recommended. Goes on easily around the threads. It can be a tight fit if applied to the start of a thread application so it's recommended to have this applied towards the end. I used this for the installation of a Jagg Oil Cooler and it worked as it should. The instructions of the Jag Oil Cooler include the use of this thread sealant. No leaks and no complaints. I also recently applied to the end of the oil drain plug after an oil change to ensure there would be no leaks and it worked great. Of course the oil drain plug o-ring was still there so this was applied to the threads just before the o-ring. The o-ring has a tad bit of new oil put on it. Review: Works on Avgas. - Used this to seal a check valve into an aircraft fuel tank. Easy to apply. Does the job. Used on 1/2 inch pipe threads. ## Features - OEM-Approved Performance: LOCTITE automotive products are not only OEM-specified but also designed and tested by leading auto manufacturers. Trusted by professionals in engine building and repair worldwide (PN: 483630) - Reliable Thread Sealing: Automotive-grade performance for secure seals in fuel fillings, oil and coolant lines, brake, and steering fittings - Medium-Temp Resistance: Prevents leaks in threaded metal fittings, even in extreme temperatures up to 400°F - Comprehensive Protection: Defends against leaks, vibration loosening, moisture, hydraulic fluids, and diesel fuels for lasting reliability - Hassle-Free Assembly: Thread lubrication ensures smooth assembly and disassembly, with the flexibility to reposition parts for up to 24 hours after application ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0002KKTH2 | | Best Sellers Rank | #14,081 in Automotive ( See Top 100 in Automotive ) #39 in Thread Lock Sealers | | Brand Name | Loctite | | Color | off-white | | Compatible Material | Metal | | Container Type | Bottle | | Customer Reviews | 4.7 4.7 out of 5 stars (353) | | Full Cure Time | 24 Hours | | Global Trade Identification Number | 00079340373976 | | Included Components | (1) 592 Thread Sealant for Automotive | Opaque, Off-White, 50 ml Tube | | Item Form | Liquid | | Item Package Quantity | 1 | | Item Type Name | LOCTITE PST 592 Thread Sealant for Automotive: Low-Pressure, High-Viscosity, Anaerobic, Prevents Galling | Opaque, Off-White, 50 ml Tube (PN: 483630) | | Manufacturer | Loctite | | Material Type | Acrylic,Metal | | Model | 37397 | | Other Special Features of the Product | Sold by Speedway Motors | | Specific Uses For Product | Fleet and plant maintenance. | | UPC | 079340373976 | | Unit Count | 50 Milliliters | | Viscosity | high | | Volume | 50 Milliliters | | Warranty Description | See Return Policy | | Water Resistance Level | Water Resistant | ## Product Details - **Brand:** Loctite - **Item Form:** Liquid - **Material:** Acrylic,Metal - **Special Feature:** Sold by Speedway Motors - **Specific Uses For Product:** Fleet and plant maintenance. ## Images ![592 Automotive Opaque Thread Sealant - High-Pressure, High-Viscosity, Prevents Galling - 50 ml, 1 Pack - Image 1](https://m.media-amazon.com/images/I/71JM6nUMAmL.jpg) ## Questions & Answers **Q: How much should I apply to the threads on a hydraulic fitting? It says 3/4 of a thread but I don’t know how much that really is...** A: Loctite 592 has a ribbon style nozzle, wide slot for discharge. The correct method is to hold the end of the nozzle up against the side of the fitting, so the width of the slot opening is across a few threads. As you squeeze the tube gently and dispense the sealant into the root of the threads, slide the nozzle around the fitting in order to go ¾ of the way around the tube. Feel free to go 360° around if you wish. That’s a little excess material but won’t really hurt. You end up with sealant in the root of the treads only, which is enough. Hope that helps. **Q: Is the "activator" necessary or will the sealant work without it?** A: While the manufacturer recommends cleaning with their cleaner (that just happens to be a primer and activator) I have used the 592 thread sealant and even the 518 gasket maker with other cleaners such as vm&p naphtha (that is not a primer or activator) with excellent results. A primer is recommended when both surfaces are considered "inactive". The Loctite primer defines what this is. **Q: How strong is the thread locker? Can fittings be removed?** A: This is not thread locker. This is thread sealant (like pipe dope). You will be able to remove the fittings. **Q: I have a brass engine coolant temperature gauge leaking. Do i have to drain the coolant before using and let dry completely?** A: The fitting must be clean and dry prior to applying the 592, and it should be allowed to cure for at least 24 hours (preferably 72) before adding the coolant back into the system. Any other questions, please reach out to our technical team at 1-800-LOCTITE ## Customer Reviews ### ⭐⭐⭐⭐⭐ This stuff is great for any threads that are applied to oil connections ... *by A***R on November 10, 2016* This stuff is great for any threads that are applied to oil connections on a motorcycle. Highly recommended. Goes on easily around the threads. It can be a tight fit if applied to the start of a thread application so it's recommended to have this applied towards the end. I used this for the installation of a Jagg Oil Cooler and it worked as it should. The instructions of the Jag Oil Cooler include the use of this thread sealant. No leaks and no complaints. I also recently applied to the end of the oil drain plug after an oil change to ensure there would be no leaks and it worked great. Of course the oil drain plug o-ring was still there so this was applied to the threads just before the o-ring. The o-ring has a tad bit of new oil put on it. ### ⭐⭐⭐⭐⭐ Works on Avgas. *by M***D on October 26, 2025* Used this to seal a check valve into an aircraft fuel tank. Easy to apply. Does the job. Used on 1/2 inch pipe threads. ### ⭐⭐⭐⭐⭐ Great stuff *by J***H on August 21, 2025* This stuff is amazing. Made putting AN connections together so much easier with no leaks. ## Frequently Bought Together - LOCTITE PST 592 Thread Sealant for Automotive: Low-Pressure, High-Viscosity, Anaerobic, Prevents Galling | Opaque, Off-White, 50 ml Tube (PN: 483630) - Slippery Pete 5cc Hand Pump Transfers Gear Oil, Transmission and Differential Fluids From Quart Bottles (Not for Red Line Quarts) (1) - Chrysler (68218057AC) Genuine Mopar Fluid ATF+4 Automatic Transmission Fluid - 1 Quart, 32 Ounces --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.hr/products/12372323-592-automotive-opaque-thread-sealant-high-pressure-high-viscosity-prevents](https://www.desertcart.hr/products/12372323-592-automotive-opaque-thread-sealant-high-pressure-high-viscosity-prevents) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-04-25*