DuPont™ Kalrez® Spectrum™ 6375
DuPont™ Kalrez® perfluoroelastomer parts have been the sealing material of choice for long-term reliable sealing in the harshest chemical environments. Today, elastomeric seals are expected to perform in a variety of even more aggressive chemicals and at higher temperatures. To meet the needs of chemical processors, DuPont™ Kalrez® 6375 parts offer broader chemical resistance while maintaining the high temperature stability you’ve come to expect from Kalrez® parts.
Kalrez® Spectrum™ 6375 is designed to give outstanding performance in the widest possible range of chemicals and temperatures. This product is an excellent choice for use in acids, bases, amines, steam, ethylene oxide, and many other aggressive chemicals. Mixed streams, once a problem for many chemical processors, can now be handled by 6375. The curing system also allows for a continuous upper service temperature of 275°C (525°F), approximately 100°F higher than other products claiming broad chemical resistance.
This high temperature stability translates to increased chemical resistance over all temperature ranges, especially if high temperature process excursions occur. This combination of chemical and thermal resistance provides advantages for chemical processors. Today, chemical processors use several perfluoroelastomer parts, including Kalrez® 4079, 1050LF, and 2035, to optimize chemical and thermal performance. Kalrez® Spectrum™ 6375 may be used in many applications to displace these products. However, if optimum chemical resistance is required, then applications must be individually reviewed for the optimum compound selection.
| Property | Value |
|---|---|
| Hardness, Shore A ±5 | 75 |
| 100% Modulus, MPa (psi) | 7.24 (1050) |
| Tensile at Break, MPa (psi) | 15.16 (2200) |
| Elongation at Break, % | 160 |
| Compression Set, % (70 hr at 204°C / 400°F) | 30 |
| Maximum Service Temperature, °C (°F) | 275 (527) |
| Lower Service Temperature, °C (°F) | –20 (–4) |
- Not to be used for specifications
- ASTM D412, 500 mm/min
- ASTM D395 B, O-rings
For many applications, low volume swell of elastomers is critical to proper equipment operation. Excessive swell may cause permanent seal failure due to equipment hangup, extrusion, etc. The following data is the result of lab testing to determine the volume swell of Kalrez® Spectrum™ 6375 when exposed to various fluids. Other physical property testing is needed to further define product performance; however, volume swell is an excellent predictor of performance. The following chemicals represent some of the most aggressive applications in the industry.
Test results are indications of the performance of compound 6375; all applications are unique, and it is strongly recommended that immersion testing be performed in actual process fluids.
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Kalrez 6375
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