Enhanced TDS
Knowde-enriched technical product data sheet
Identification & Functionality
- Chemical Family
- Polymer Name
- Technologies
- Product Families
Features & Benefits
- Materials Features
- Product Highlights
- Excellent resistance/low volume swell in a wide range of wet chemistries (acids/bases)
- Excellent resistance to amine-based chemistries versus standard elastomers.
- Low metals content.
- Very good mechanical strength/compression set properties.
Applications & Uses
- Markets
- Applications
- Plastics & Elastomers End Uses
- Use Recommendations
- Wet etch tools
- Roller applications for wet inline tools
- Wet chemical management systems
- Filter, pumps, etc., for wet process applications
Properties
- Color (Properties)
- Physical Form
- Mechanical Properties
Value Units Test Method / Conditions Compression Set (O-Ring AS568-214, at 204°C, 70h) 26 % ASTM D 1414 Hardness (Shore A) 76 Shore A ASTM D 2240 Elongation (at Break) 158 % ASTM D 412 Tensile Strength 15.9 MPa ASTM D 412 Modulus (at 100% Elongation) 6.9 MPa ASTM D 412 - Thermal Properties
Value Units Test Method / Conditions Coefficient of Linear Thermal Expansion 3.92 E-4/°C ISO 11359-1/-2 - Typical Properties
Value Units Test Method / Conditions Lowest Service Temperature ¹ -16 °C - Maximum Service Temperature ¹ 230 °C - - Note
- [1]: DuPont proprietary test method; useful temperature range may vary with seal design and application specifics
- Chemical Resistance
For many applications, low volume swell/weight gain (change) of elastomers is critical for proper equipment operation. Excessive swell /weight gain (change) may cause permanent seal failure due to equipment hang-up, extrusion, etc. While other physical property testing may be needed to adequately define product performance in a particular application, volume swell/weight gain (change) is an excellent indi cator of resistance to chemical attack. Table1 provides chemical resistance (% volume swell) test data for Elastomers Part A in various acids, bases, solvents and water. Table 2 compares the weight gain and volume swell of Elastomers Part A versus standard FKM in anamine - based chemistry
Table1 Chemical Resistance, % Volume Swell 1, 2
Chemical Exposure Time Temperature (°C % Volume Swell Kalrez® W240
Acetic Acid 70 100 4 Ammonium Hydroxide 70 100 4 Ethylene Diamine 70 90 5 Nitric Acid (70%) 70 85 1 Nitric Acid (70%) 672 85 3 Sulfuric Acid (98%) 70 150 3 Sulfuric Acid (98%) 672 150 5 Toluene 70 100 7 Toluene 672 100 6 Water 70 225 6 Swell
1 = ASTM D471 and D1414 (AS568 K214 O-ring test specimens)
2 = Please consult a Kalrez® Application Engineer to asses performance fit in your specific application