--- product_id: 2422417 title: "Loctite 37482 545 Pneumatic/Hydraulic Thread Sealant Bottle - 36 ml" brand: "loctite" price: "$55.41" currency: USD in_stock: true reviews_count: 13 category: "Loctite" url: https://www.desertcart.us/products/2422417-loctite-37482-545-pneumatic-hydraulic-thread-sealant-bottle-36-ml store_origin: US region: United States of America --- # 36 ml precision volume fast 5-min initial set particle-free formula Loctite 37482 545 Pneumatic/Hydraulic Thread Sealant Bottle - 36 ml **Brand:** loctite **Price:** $55.41 **Availability:** ✅ In Stock ## Summary > 🔩 Seal it tight, seal it right — the pro’s choice for leak-proof confidence! ## Quick Answers - **What is this?** Loctite 37482 545 Pneumatic/Hydraulic Thread Sealant Bottle - 36 ml by loctite - **How much does it cost?** $55.41 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/2422417-loctite-37482-545-pneumatic-hydraulic-thread-sealant-bottle-36-ml) ## 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 - • **Vibration-Resistant Seal:** Locks threads securely even under high-pressure and vibration - • **Versatile Industrial Strength:** Ideal for hydraulic, brake, transmission, and PTO fittings - • **Rapid Initial Set for Efficiency:** Begins curing within 5 minutes to speed up your workflow - • **Clean Formula, Zero Contamination:** No fillers or particles to foul valves or clog filters - • **Precision Volume, Maximum Control:** 36 ml bottle designed for exact application without waste ## Overview Loctite 37482 545 is a 36 ml high-performance pneumatic and hydraulic thread sealant trusted by professionals for its fast curing, particle-free formula that prevents contamination and ensures durable, vibration-resistant seals in critical automotive and industrial fittings. ## Description The LOCTITE Automotive Pneumatic/Hydraulic Pipe Thread Sealant Purple 545 is a high-performance solution designed for sealing high-pressure pneumatic and hydraulic systems. This 36 ml sealant is OEM-approved and trusted by professionals in engine building and repair, with rigorous testing by leading auto manufacturers. It provides dependable thread sealing, ensuring robust performance in high-pressure applications. Its clean, contaminant-free formula contains no fillers or particles, preventing fluid contamination and avoiding valve fouling or filter clogging. The sealant offers reliable curing on "as received" fasteners, with controlled locking strength for easy disassembly when needed. Versatile in application, it's ideal for hydraulic line fittings, brake fittings, transmission fluid fittings, and PTO fittings. Review: Spendy ... but worth every penny - Original Review on May 12, 2013: I've used PTFE tape for years and have preferred it to pipe dope ... but this stuff has me sworn off PTFE, forever, in scenarios where the 24 hour cure time is not a factor. Apply it to the threads as a liquid and within 5 mins it begins to set up into a purple, pasty material -- plenty of time to get it threaded into place. Vibration resistance plus sealant in one -- I love it. Addendum Review added on April 29, 2014: Nearly a year later the onboard air system I built for my vehicle still maintains 200psi pressure with not a single leak; it has lots of fittings, and I used the bulk of the bottle on that project. Also, every pneumatic tool I own now has this thread sealant instead of PTFE tape where the industrial nipple is fitted to the tool -- no leaks. I purchased a fixer-upper home last December and needed to replace the hot water heater and pressure tank, and, again this sealant was used to produce fitted connections with zero leakage. I recently used the last of my first bottle when installing an interior (to home) 3/4" threaded ball valve and accompanying outdoor hose bib to bring water from my home to my dock, and I just received the replacement bottle I ordered. I will likely always keep some of this around from now on. A little bit goes a long, long way. I've also learned in using it that while 24 hour cure time is recommended, for non-wet, low pressure (i.e. less than 300 psi) scenarios, you can likely get away with a 15-20 minute wait. I've never waited less than 15-20 mins ... and those times when I waited only that long to use dry things I've sealed, I always had good seals. I'd allow full cure time for wet conditions, just to be safe, but that's me. Review: Perfect sealant for my methanol fuel lines - I used this Loctite 545 on all the fittings in my methanol fuel line setup for my project, and it has been absolutely flawless. Not a single leak anywhere. It applies clean, seals perfectly, and holds strong even under vibration and pressure. This product gave me total confidence in my fuel system, and I definitely won’t stop using it. If you’re working with methanol or high-performance setups, this sealant is a must-have. Highly recommended! ## Features - Designed for locking and sealing high-pressure pneumatic and hydraulic systems - The pneumatic/hydraulic sealant contains no fillers or particles that could contaminate system fluids, foul valves or clog fine filters and screens - Reliably cures on "as received" fasteners - Typical applications include hydraulic line fittings, brake fittings, transmission fluid fittings and PTO fittings - Fit type: Vehicle Specific ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B003XZB54O | | Best Sellers Rank | #5,087 in Automotive ( See Top 100 in Automotive ) #20 in Thread Lock Sealers #322 in Oils & Fluids | | Brand | Loctite | | Brand Name | Loctite | | Color | Purple | | Compatible Material | Metal | | Customer Reviews | 4.8 out of 5 stars 1,051 Reviews | | Global Trade Identification Number | 00079340374829 | | Included Components | (1) LOCTITE 545 Pneumatic/Hydraulic Pipe Thread Sealant | Purple, 36 ml Bottle | | Item Dimensions | 6.25 x 2.25 x 1.1 inches | | Item Form | Liquid | | Item Type Name | automotive-thread-lock-sealers | | Item Weight | 1.6 ounces | | Item dimensions L x W x H | 6.25 x 2.25 x 1.1 inches | | Manufacturer | Loctite | | Material | Sealant | | Material Type | Sealant | | Model | 492145 | | Number of Items | 1 | | Part Number | 492145 | | Style | Industrial | | Style Name | Industrial | | Surface Recommendation | Miscellaneous | | UPC | 079340374829 | | Unit Count | 1.21 Fluid Ounces | | Water Resistance Level | Not Water Resistant | ## Product Details - **Brand:** Loctite - **Item Weight:** 1.6 ounces - **Item dimensions L x W x H:** 6.25 x 2.25 x 1.1 inches - **Material:** Sealant - **Style:** Industrial ## Images ![Loctite 37482 545 Pneumatic/Hydraulic Thread Sealant Bottle - 36 ml - Image 1](https://m.media-amazon.com/images/I/71S8jjG8XqS.jpg) ## Available Options This product comes in different **Size, Style** options. ## Questions & Answers **Q: does this dry hard/solid? can parts be removed after? i want to use this to install oil sensors in my car. thanks.** A: Dries semi hard but hard enough that you can leave a fingernail imprint. it's not difficult to disassemble anything. I really like this stuff **Q: Will it seal even with small amount of hydraulic fluid present? Just incase I can't get it all cleaned out of the female threads,** A: For LOCTITE 545 clean as much as possible in order to have the best possible result. I would recommend testing it in order to see how it behaves for your application. Also 545 is ideal for hydraulic system because it has no fillers so it will not contaminate. **Q: Can I use this on the outside of a threaded line that is slowly leaking? Or only on the threads as it’s screwed in to prevent leaks?** A: To my knowledge it will only work if you put it inside the threads - as you are assembling it. And it works pretty well doing that. Worked on a 3000+ psi hydraulic connection that was continually leaking. **Q: I have a compressor tee fitting that I can't fully tighten to keep it oriented properly. Will this seal that fitting?** A: It probably will for a while , but it will leak again . If the fitting is loose you could try teflon tape or you could try to tap the hole out a little and try to turn the fitting one complete turn to get it to tighten up. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Spendy ... but worth every penny *by S***E on May 12, 2013* Original Review on May 12, 2013: I've used PTFE tape for years and have preferred it to pipe dope ... but this stuff has me sworn off PTFE, forever, in scenarios where the 24 hour cure time is not a factor. Apply it to the threads as a liquid and within 5 mins it begins to set up into a purple, pasty material -- plenty of time to get it threaded into place. Vibration resistance plus sealant in one -- I love it. Addendum Review added on April 29, 2014: Nearly a year later the onboard air system I built for my vehicle still maintains 200psi pressure with not a single leak; it has lots of fittings, and I used the bulk of the bottle on that project. Also, every pneumatic tool I own now has this thread sealant instead of PTFE tape where the industrial nipple is fitted to the tool -- no leaks. I purchased a fixer-upper home last December and needed to replace the hot water heater and pressure tank, and, again this sealant was used to produce fitted connections with zero leakage. I recently used the last of my first bottle when installing an interior (to home) 3/4" threaded ball valve and accompanying outdoor hose bib to bring water from my home to my dock, and I just received the replacement bottle I ordered. I will likely always keep some of this around from now on. A little bit goes a long, long way. I've also learned in using it that while 24 hour cure time is recommended, for non-wet, low pressure (i.e. less than 300 psi) scenarios, you can likely get away with a 15-20 minute wait. I've never waited less than 15-20 mins ... and those times when I waited only that long to use dry things I've sealed, I always had good seals. I'd allow full cure time for wet conditions, just to be safe, but that's me. ### ⭐⭐⭐⭐⭐ Perfect sealant for my methanol fuel lines *by N***. on December 4, 2025* I used this Loctite 545 on all the fittings in my methanol fuel line setup for my project, and it has been absolutely flawless. Not a single leak anywhere. It applies clean, seals perfectly, and holds strong even under vibration and pressure. This product gave me total confidence in my fuel system, and I definitely won’t stop using it. If you’re working with methanol or high-performance setups, this sealant is a must-have. Highly recommended! ### ⭐⭐⭐⭐⭐ This is worth the cost *by T***H on June 27, 2026* Throw away all the rolls of teflon tape you have and just use this stuff. Yes it is not cheap but you are not slathering it on like spackle on your walls, you only use a tiny amount per fitting and the results are worth it, the bottle will last you years. ## Frequently Bought Together - Loctite 37482 545 Pneumatic/Hydraulic Thread Sealant Bottle - 36 ml - 1338 Front Cover Crankshaft Seal Installer &5046 Wear Sleeve Installer Tool Kit For Dodge Cummins 3.9L 5.9L 6.7L Replace OE 1338/3824498, 5046/3824500 - Genuine Ford Fluid TA-31 RTV Silicone Sealant - 5 oz. --- ## 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.us/products/2422417-loctite-37482-545-pneumatic-hydraulic-thread-sealant-bottle-36-ml](https://www.desertcart.us/products/2422417-loctite-37482-545-pneumatic-hydraulic-thread-sealant-bottle-36-ml) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-08-18*