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Loctite 37482 545 Pneumatic/Hydraulic Thread Sealant Bottle - 36 ml
USD 37
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High lubricity thread sealant for locking and sealing metal pipes and small fittings with fine threads.
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What Stands Out
Product Details
- 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
Product Technical Details
| Manufacturer | Loctite |
| Brand | Loctite |
| Model | 545 Pneumatic/Hydraulic Pipe Thread Sealant |
| Item Weight | 1.6 ounces |
| Product Dimensions | 6.25 x 2.25 x 1.1 inches |
| Item model number | 492145 |
| Is Discontinued By Manufacturer | No |
| Exterior | Machined |
| Manufacturer Part Number | 492145 |
| OEM Part Number | 37482 |
| National Stock Number | 2590-01-557-0288 |
What's in the box
(1) LOCTITE 545 Pneumatic/Hydraulic Pipe Thread Sealant | Purple, 36 ml Bottle
Who Should Buy?
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Professional Mechanic
Ideal for professionals needing reliable sealing for hydraulic and pneumatic systems in automotive and machinery applications.
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Industrial Maintenance
Perfect for maintenance workers sealing threaded connections in industrial equipment, preventing leaks and enhancing reliability.
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DIY Enthusiasts
Great for hobbyists working on home projects involving gas lines or plumbing where thread sealant is required.
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High-Temperature Applications
Not suitable for environments with extremely high temperatures exceeding the product's temperature resistance limits.
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Plastic Threads
Ineffective for sealing plastic threaded connections which may require a specific type of sealant for better adhesion.
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Temporary Repairs
Not advisable for temporary fixes; it's designed for permanent sealing of threaded connections in various systems.
Product Description
Customer Questions & Answers
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Question:
What is Loctite 545 Pneumatic-Hydraulic Thread Sealant used for?
Answer: Loctite 545 is specifically designed for sealing threads in pneumatic and hydraulic applications. It provides a robust seal that prevents leakage of gases and liquids while offering excellent chemical resistance. It's ideal for use in assemblies where disassembly may be necessary for maintenance. This sealant is perfect for securing threaded metallic connections in industries such as automotive, manufacturing, and plumbing. -
Question:
Is Loctite 545 suitable for use on plastic threads?
Answer: No, Loctite 545 is not recommended for use on plastic threads. It is engineered for metals, making it ideal for steel, aluminum, and brass applications. When dealing with plastic threads or fittings, consider using a sealant that specifies compatibility with plastics. This ensures a secure seal without damaging the materials. -
Question:
How long does Loctite 545 take to cure?
Answer: Loctite 545 typically cures within 24 hours. However, initial handling strength can be achieved in just a couple of hours under optimal conditions. Curing time can vary based on factors such as temperature, humidity, and the surface condition of the materials being sealed. For optimal performance, it's recommended to allow the sealant to cure fully before applying pressure or stress to the joint. -
Question:
Can Loctite 545 be used on high-pressure applications?
Answer: Yes, Loctite 545 is suitable for high-pressure applications, capable of sealing up to 10,000 psi under pressure once fully cured. This feature makes it ideal for hydraulic systems and pneumatic tools. Ensure surfaces are clean and free from contaminants before application to maximize effectiveness in high-pressure scenarios. -
Question:
What temperature range can Loctite 545 withstand?
Answer: Loctite 545 can withstand temperatures ranging from -50°C to +150°C (-58°F to +302°F). This makes it suitable for a broad range of operational environments, from cold outdoor settings to high-heat industrial applications. Ensuring that the application’s operating temperatures fall within this range will help maintain the integrity of the seal over time. -
Question:
Is Loctite 545 removable?
Answer: Yes, Loctite 545 is designed for disassembly, allowing components to be easily unscrewed or disassembled when needed. This is crucial for maintenance or repairs, especially in industrial systems where periodic checks are necessary. It offers enough resistance to prevent loosening due to vibration while still being removable without the need for heat or special tools. -
Question:
How do you apply Loctite 545?
Answer: To apply Loctite 545, clean the threads of the metal components thoroughly to remove any grease or dirt. Then, apply a thin, even layer of the sealant to the male threads. Assemble the parts and tighten as needed. It's advisable to avoid over-tightening, as this can affect the seal's effectiveness. Ensure the components are correctly aligned for best results. -
Question:
Can Loctite 545 be used on gas fittings?
Answer: Loctite 545 is not recommended for gas fittings, especially natural gas or propane applications. For gas-related connections, using a sealant specifically designed for gas fittings is crucial to avoid risk of leakage or hazardous situations. Always check the product specifications before use to ensure safety and compliance with local regulations. -
Question:
What sizes does Loctite 545 come in?
Answer: Loctite 545 is typically available in various sizes, commonly including 50 ml bottles suitable for small repairs and larger containers for industrial applications. The size selection allows users to choose based on the scale of their projects—smaller bottles are convenient for DIY tasks, while larger ones are ideal for professional uses. -
Question:
Where can I buy Loctite 545 Pneumatic-Hydraulic Thread Sealant Bottle in Timor-Leste?
Answer: You can purchase Loctite 545 Pneumatic-Hydraulic Thread Sealant Bottle from Ubuy, a reliable online store that offers a wide range of products, including home improvement and industrial materials. Ubuy provides delivery options across Timor-Leste, allowing you to acquire this essential sealant conveniently from the comfort of your home.
Loctite Thread Lock 492145 Editorial Review
The Loctite 492145 545 Pneumatic/Hydraulic Thread Sealant Bottle with a 36-milliliter capacity is an effective and reliable sealant, ideal for hydraulic systems. This sealant is designed to ensure leak-free connections under high pressure, with no fillers to contaminate the hydraulic system. According to customer feedback in the Q&A forum, the sealant dries semi-hard and is not difficult to disassemble. It is recommended to clean substrates prior to application, but the sealant can work even with minimal hydraulic fluid present. The sealant works best when applied inside the threaded connection during assembly, but it can also work on the outside of a threaded line that is leaking. However, if a fitting is loose, it may be better to use teflon tape or to tap the hole out a little to tighten the fitting. Loctite 545 works on all metals, including brass and aluminum, and requires no primer if one substrate is made of brass. The six-pack of 36mil bottles includes six bottles, as advertised.
Customer Reviews & Ratings
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5 Star
86%
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4 Star
9%
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3 Star
3%
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2 Star
1%
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1 Star
1%
Review this product
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Pros
- Effective and reliable sealant for hydraulic connections
- Dries semi-hard and easy to disassemble
- No fillers to contaminate hydraulic system
- Can work on the outside of a threaded line that is leaking
- Works on all metals without primer if one substrate is brass
Cons
- May not be able to seal loose fittings for long periods of time
Product Price History
Important information
- Limitations : For products shipped internationally, please note that any manufacturer warranty may not be valid; manufacturer service options may not be available; product manuals, instructions, and safety warnings may not be in destination country languages; the products (and accompanying materials) may not be designed in accordance with destination country standards, specifications, and labeling requirements; and the products may not conform to destination country voltage and other electrical standards (requiring use of an adapter or converter if appropriate). The recipient is responsible for assuring that the product can be lawfully imported to the destination country. When ordering from Ubuy or its affiliates, the recipient is the importer of record and must comply with all laws and regulations of the destination country.
- Not all the products listed on Ubuy are for sale, as Ubuy is a global search engine. Products are subject to export/trade regulations.
USD 37
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Features & Benefits
- Designed for locking and sealing high-pressure pneumatic and hydraulic systems
- Contains no fillers or particles that could contaminate system fluids or clog filters
- Reliably cures on 'as received' fasteners
- Controlled locking strength allows easy disassembly
- Recommended for fine threaded fittings in hydraulic and pneumatic installations
- Suitable for fittings up to 50 mm in diameter, including pneumatic and hydraulic fittings



