How to improve the sealing performance with sulfolane type seal expansion agent?
What is sulfolane type seal expansion agent?
Sulfolane type seal expansion agent are critical in various industries for enhancing the sealing performance of rubber materials in contact with lubricants. These agents prevent leakage, improve compatibility between oils and seals, and extend the service life of sealing systems. DMET 7300 is a prominent product in this category, and it is compared with other products like LUBRIZOL 730, Afton Chemical's HiTEC® series, and Hilti CP 620, among others.
How Sulfolane Type Seal Expansion Agents Improve Sealing Performance?
Sulfolane type agents, such as DMET 7300, improve sealing performance through several mechanisms:
Enhanced Compatibility: They improve the compatibility between lubricating oils and rubber sealing materials, reducing the risk of leakage caused by poor compatibility.
Seal Swell Effect: These agents cause the rubber seals to swell slightly, filling micro-cracks and irregularities in the seal, which enhances the sealing effect.
Resistance to Hydrolysis: Sulfolane type agents are highly resistant to hydrolysis, ensuring their effectiveness under various operating conditions.
Broad Solubility: They exhibit excellent solubility in different classes of base oils, making them versatile for various applications.
Low Dosage Requirement: Due to their concentrated formulation, only a small amount is required to enhance the performance of base oils and rubber sealing materials, making them cost-effective.
Main Products at Home and Abroad
The main products for the application of sulfolane type seal expansion agents include:
DMET 7300: A cyclobutylsulfone-based sealing expansion agent known for its excellent solubility in Class I, II, III, and IV base oils.
LUBRIZOL 730: A well-established product in the market, often used as a benchmark for comparison with newer products like DMET 7300.
Afton Chemical's HiTEC® Series: These include HiTEC® 008 and HiTEC® 082, which are seal swell additives designed to prevent seal hardening or shrinking and improve additive solubility.
Hilti CP 620 Firestop Foam: While not a sulfolane type agent, it is a sealing expansion agent used in firestopping applications, known for its quick curing and water resistance.
Comparison of Products
A detailed comparison of DMET 7300 with other products reveals:
| Feature | DMET 7300 | LUBRIZOL 730 | Afton Chemical's HiTEC® 008 | Hilti CP 620 |
|---|---|---|---|---|
| Chemical Basis | Cyclobutyl sulfone | Not Specified | Adipate Ester | Rigid Foam |
| Treat Level | 0.35-1.5% (by weight) | Not Specified | Not Specified | Not Applicable |
| Highlights | Low dosage, not easily hydrolyzed, good sealing performance | Industry Standard | Effective in various industrial and automotive lubricants | Excellent water resistance, mold and mildew resistance |
| Applications | Automotive, industrial equipment, petrochemical, aerospace | Various | Industrial and automotive | Firestopping applications |
| Packaging | 40 or 200kgs / Steel drum | Not Specified | Not Specified | Not Specified |
Application Cases
Application cases for sulfolane type seal expansion agents include:
Automotive: DMET 7300 is used in sealing systems for automotive components such as engines, transmissions, and braking systems, ensuring optimal performance and reduced fluid leakage.
Industrial Equipment: Industrial machinery, such as pumps, compressors, and hydraulic systems, can benefit from DMET 7300's enhanced sealing performance, leading to reduced maintenance costs, improved efficiency, and extended equipment life.
Petrochemical Industry: DMET 7300 can be employed in the petrochemical sector for sealing components in reactors, heat exchangers, and pipelines to ensure the reliable containment and transportation of chemicals and fluids.
Aerospace and Aviation: In the aerospace and aviation industries, DMET 7300 can be used to enhance the sealing performance of components in aircraft engines, hydraulic systems, and landing gear, contributing to improved safety and efficiency.
Technical Parameters of DMET 7300
The technical parameters of DMET 7300 are as follows:
· Appearance: Yellow transparent liquid
· Density (25℃, g/cm³): 1.02
· Viscosity (40℃, mm²/s): 22.7
· Flash Point (closed cup, ℃): 112
· Sulfur Content (%): 10.7
· Water (%): 0.67
· Effective Substance Content (%): 90.05
These parameters indicate that DMET 7300 is a highly effective sealing expansion agent with properties that make it suitable for a wide range of applications.
Conclusion
Sulfolane type seal expansion agents like DMET 7300 play a crucial role in enhancing the sealing performance across various industries. They offer a range of benefits, including improved compatibility, resistance to hydrolysis, and broad solubility. When compared to other products such as LUBRIZOL 730 and Afton Chemical's HiTEC® series, DMET 7300 stands out for its low dosage requirements and effectiveness in enhancing sealing performance. Application cases in automotive, industrial, petrochemical, and aerospace industries demonstrate the versatility and reliability of sulfolane type seal expansion agents. Technical parameters and pricing information are essential for users to make informed decisions when selecting the appropriate sealing expansion agent for their needs.
If you are looking for Sulfolane type seal expansion agent DMET 7300 or want to know more about the technical information, please feel free to contact UNP Chemicals.