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Loctite 200 is a medium-strength product; thus, it can be used on small nuts and bolts. This thread sealant is used on metals, especially in the areas of low to moderate fastening. It is available in different types, all serving different purposes. They include:
Loctite 200 Liquid
Loctite 200 liquid is a medium-strength thread sealing adhesive. Its particular formulation was made to withstand the harshest substrate conditions. It is ideal for the metal threads common in machine parts. Additionally, this liquid form allows for easy control and penetration in small gaps. This is essential in areas that maybe have vibrational stress. However, its striking red coloration also serves as a way to identify areas that require disassembly. As a handy feature, it remains effective and secure even after low surface treatment.
Loctite 200 Sealant Tape
Loctite 200 sealant tape is a practical solution for the sealing needs of threads. The tape eliminates the hassle of liquid sealants because it cuts to the chase. The tape is easy to apply and can provide instant sealing. It is especially excellent for the repair and maintenance of plumbing and gas. Its resistance to various chemicals means that it can be used to prevent sealing leaks. In addition, it features a thin construction, allowing the user to have a tight seal without excessively crowding the threads.
Loctite 200 Screw Lock
Loctite 200 screw lock is an innovative, groundbreaking technology that locks and seals threaded metal fasteners under defined temperature conditions. First, its medium strength allows it to be disassembled manually with minimum torque. Second, this makes it suitable for mechanical applications requiring readjustment. Third, its unique design means that it can fit screw types that run into difficulty due to varying temperatures. It effectively counters thermal expansion and contraction, which might tamper with mechanical integrity.
Medium Strength
Loctite 200 is a medium-strength anaerobic adhesive. Thus, it is designed to lock and seal threaded fasteners in metal applications. It works especially well in case of small to medium-sized bolts. Its medium strength makes it especially suitable for assemblies that often need disassembly for frequent maintenance.
Temperature Resistance
One of the key features of Loctite 200 is its thermal stability. It effectively counters temperature variations, which is common in mechanical applications. Thus, it maintains its bond up to 150 degrees Celsius. This is especially important in automotive or aerospace contexts. In these settings, components may experience fluctuating temperatures.
Chemical Resistance
Loctite 200 provides users with an outstanding chemical seal that protects any released chemicals. Common chemicals such as oils and solvents might severely damage other types of adhesives. The unique formulation of Loctite 200 allows it to resist such chemical exposure. This makes it ideal for industrial applications as a countermeasure against premature bond failure.
Anti-Loosening Properties
Fasteners have the tendency of loosening due to mechanical vibrations over time. However, Loctite 200 practically counters this issue by utilizing anti-loosening properties. The adhesive forms a solid and secure lock on the threaded surfaces, maintaining the initial fastening considerably longer. This is especially crucial in maintenance-heavy environments where regular checks and repairs could prove inconvenient and time-consuming.
Anaerobic Adhesive
Lastly, Loctite 200 is classified as an anaerobic adhesive. Anaerobic adhesives are the types of adhesives that cure in the absence of air. They provide clean and convenient application. This makes them especially ideal for precision assemblies. In contrast to other adhesive types, there is no need for excess removal. Anaerobic adhesives ensure that no mess is left behind and that threads are exactly sealed as necessary.
Automotive Industry
Loctite 200 is used in the automotive industry for various mechanical systems. These include engines, transmissions, and suspension components. It is useful for screws, bolts, and other threaded fasteners in this industry. This is because it offers medium strength and causes no chemical reaction in metal. Besides, the inherent capability of Loctite 200 to withstand moderate vibrations further enhances the overall durability of vehicles.
Aerospace Applications
Loctite 200 is also useful in the aerospace industry. It is particularly for lightweight and high-strength materials. Loctite 200 locks fasteners while preventing loosening due to vibrations. This helps maintain structural integrity in mission-critical parts like landing gear and engines. In addition, its ability to resist high temperatures makes it viable for use in various thermal environments.
Industrial Machinery Maintenance
The maintenance of industrial machinery largely employs Loctite 200. Threaded hardware is commonly found in heavy machinery requiring regular maintenance to minimize downtime. This is where Loctite 200 comes in. It helps keep machinery running at its optimal level by ensuring that installed fasteners are properly secured. This, in effect, decreases the frequency of mechanical failures and the accompanying need for repairs.
Electronics Assembly
Additionally, in the field of electronics, Loctite 200 screws are used in delicate components. Such components demand precision and careful handling. This is why Loctite 200 is useful for mounting electronic circuit boards. By providing a firm fastening, it maintains the product's structural integrity. At the same time, it ensures that no inadvertent damage occurs to the sensitive parts.
Oil and Gas Industry
The oil and gas industry also makes extensive use of Loctite 200. For example, equipment in oil extraction and drilling operations works in extremely harsh chemical and environmental conditions. Nevertheless, they often use threaded fasteners. Fortunately, the Loctite 200 has been formulated in such a way as to allow medium-strength sealing and locking of the fasteners. This effectively extends the operational lifespan of critical components in the service of the industry.
When selecting Loctite 200, customers will have to consider several factors to buy something that suits their unique needs. Here are the factors that customers should consider:
Material Compatibility
Loctite 200 is ideally applied to metal surfaces like steel and aluminum. Customers should avoid using it on materials that tend to form passive oxide layers. Such materials include stainless steel and chrome. However, if the need arises, they can use a mechanical method to remove the layer. Alternatively, they can use aLoctite 110 thread seal to replace it.
Application Conditions
Customers will have to look at the internal conditions of the application area. They should consider the temperature and the type of chemical exposure. Firstly, Loctite 200 has a 150-degree Celsius limit. Therefore, if the area has no extreme heat, this sealant will be the ideal option. Secondly, as much as it is resistant to chemicals, it is ideal for customers whose clients work in less chemically-active areas. If working in more aggressive areas, customers should consider more resistant alternatives.
Thread Type and Surface Finish
Customers should ensure to advise their clients to apply Loctite 200 on small to medium-sized bolts or screws. It works ideally for precision instruments. At the same time, coarse threads tend to have larger gaps that are hard to fill with anaerobic sealants. Hence, customers should avoid coarse-thread fasteners.
Sealing Requirements
Loctite 200 provides excellent sealing against gaseous and liquid mediums. This makes it ideal for low-pressure systems. However, if its sealing ability is not enough, customers should advise their clients to use sealing tape or further sealing.
Loctite 200 vs. Loctite 567
Loctite 567 is a PTFE-based thread sealant. It is specifically designed for use in gas lines or other applications that require a seal that is purely resistant to chemicals. It features a high-density fill when compared to Loctite 200. This makes it ideal for long leak detection. It also provides a tight seal that can withstand extreme chemical attacks.
Loctite 200 is particularly developed to limit the possibility of corrosion between two distinct metals. It does this by forming a protective layer that inhibits the two metals from coming into contact. Therefore, it makes the dissimilar metal common stock a possibility.
Loctite 200 is ideal for high-vibration environments. It develops a solid bond on components to keep them secured. Its medium locking strength makes fasteners hold snugly in place even as the machine vibrates.
Loctite 200 offers a significant resistance level to electrical conductivity. This makes it ideal for areas that require the sealing of threaded fasteners in electrical and electronic equipment where current passage might be detrimental.
No. While Loctite 200 is great for many mechanical applications, putting it in hydraulic systems is not advisable. It contains anaerobic adhesives that could polymerize on contact with hydraulic fluids. This could cause blockage in areas where fluid movement is critical.
Loctite 200 and Loctite 242 are both thread sealants. The main difference between them, however, lies in their locking strength. Loctite 242 is designed for general applications. Therefore, it features a relatively low strength for heavy-duty applications. On the other hand, Loctite 200 is more precise and robust for industrial uses.
