Elastomer Products from Qnity - Overview
SAE J200 (ASTM D2000) is a classification system for specifying rubber products for automotive use which has been adopted by other industries as a general guideline for relative performance. The following chart positions elastomers by their resistance to heat aging and swelling in oil. Although this system is a valuable tool in characterizing and positioning elastomers, it does not address the chemical and thermal resistance in hostile environments encountered in chemical processes. Due to the chemical attack on the backbone and or crosslinks of the rubber part, one must rely on field experience, laboratory testing and guidance from material experts.
| Kalrez® | |||
| Classification - ASTM D2000 | KK | ||
| Designation - ASTM D418 | FFKM | ||
| Maximum Service Temperature , °C (°F) | 327 (620) | ||
| Compatibility | |||
| Weather Resistance | A | ||
| Ozone Resistance | A | ||
| Oxidation Resistance | A | ||
| Radiation Resistance | B | ||
| Steam Resistance | A | ||
| Fluids Resistance | A | ||
| Chlorinated Solvents | A | ||
| High Molecular Weight Esters | A | ||
| Low Molecular Weight Esters | A | ||
| Hydrocarbon Fuel/Solvents | A | ||
| Hydrocarbon Oils/Greases | A | ||
| Low Molecular Weight Alcohols | A | ||
| Mineral Acids | A | ||
| Strong Bases | A | ||
| Strong Organic Acids | A | ||
| Water Resistance | A | ||
| Rating Legend | |
| Excellent | Good |
Please note: there maybe different grades of elastomers within a polymer family. These grades may offer improvements in physical properties, resistance to fluids, and/or environmental exposures. Specific compounding is required to optimize performance in certain applications.
| Elastomer Name: | Kalrez® |
| Trade Name: | Qnity™ Kalrez® Perfluoroelastomer Parts |
| Common Name: | Perfluoroelastomers |
| ASTM D200 Classification: | --- |
| ASTM D1418 Designation: | FFKM |
| POLYMER PROPERTIES | |
| Specific Gravity: | 1.9-2.3 |
| Specific Heat Capacity: | .974 J/g at 100°C |
| MECHANICAL PROPERTIES | |
| Hardness, Shore A: | 60 to 95 |
| Tensile Strength (x103 psi): | 1.15 to 3.50 (7.93 to 24.12 MPa) |
| Elongation, %: | 80 to 300 |
| Tensile Modulus at 100% | |
| Elongation (x103 psi): | 0.215 to 2.44 (1.48 to 16.82 MPa) |
| Tear Resistance: | Fair/Good |
| Abrasion Resistance: | Fair/Good |
| Rebound Resilience, % (Bayshore): | --- |
| Flex Cracking Resistance: | Fair/Good |
| Hysteresis Resistance: | Fair/Good |
| Compression Set Rating: | Good/Excellent |
| ASTM D395, Method B: | --- |
| Coefficient of Friction | |
| Static (vs Steel): | 0.52-1.27 |
| Dynamic (vs Steel): | 0.31-0.69 |
| ELECTRICAL PROPERTIES | |
| Volume Resistivity (ohm-cm): | 7.5e5 to 6.4e17 |
| Dielectric Strength (volts/mil): | Good/Excellent (>450) |
| Dielectric Constant | |
| 60 Hz: | --- |
| 1MHz: | 1.44 to 6.35 |
| THERMAL PROPERTIES | |
| Min. Continuous Service Temp. (°F): | -44 (-42°C) Compound Dependent |
| Max. Continuous Service Temp. (°F): | +620 (+327°C) Compound Dependent |
| Thermal Conductivity: | --- |
| (Btu/hr/sq. ft/°F/ft) | |
| Linear Coefficient of Thermal | |
| Expansion (in/in/°F x 10-5): | Compound Dependent |
| Glass Transition Temp. (°F) | Compound Dependent |
| (from DSC) | |
| COMPATIBILITY | |
| Weather Resistance: | Excellent |
| Ozone Resistance: | Excellent |
| Oxidation Resistance: | Excellent |
| Radiation Resistance: | Good, 1 x 105 Ga Gy Fair, 6 x 105 Ga GY |
| Steam Resistance: | Excellent |
| Water Resistance: | Excellent |
| Gas Permeability Rating: | |
| Fluids Resistance | |
| Chlorinated Solvents: | Excellent |
| High Molecular Weight Esters: | Excellent |
| Low Molecular Weight Esters: | Excellent |
| Hydrocarbon Fuels/Solvents: | Excellent |
| Hydrocarbon Oils/Greases: | Excellent |
| Low Molecular Weight Alcohols: | Excellent |
| Mineral Acids: | Excellent |
| Strong Bases: | Excellent |
| Strong Organic Acids: | Excellent |
| COMMENTS | |
| Fully integrated product line of different perfluoroelastomers which offers the broadest range of premium performance sealing materials in the market | |