Over-Compression: When ‘Tighter’ is not ‘Better’ for Gasket Performance
Problem Statement
Over-compression in gaskets leads to premature failure, especially in high-pressure and high-temperature environments. Excessive compression reduces sealing efficiency, accelerates material degradation, and increases compression set.
Material Science Analysis
Over-compression stresses the polymer matrix, causing irreversible deformation. EPDM fails due to its lower crosslink density, while FKM excels due to its high fluorine content and stable carbon-fluorine bonds. HNBR offers intermediate performance with superior aging resistance.
Technical Specs
- Material: FKM (Fluorocarbon Rubber)
- Shore A Hardness: 75 ± 5
- Tensile Strength: 15 MPa
- Elongation at Break: 200%
- Temperature Range: -20°C to 200°C
- Compression Set: 15% (22 hrs @ 200°C)
Material Comparison
| Material | Shore A Hardness | Tensile Strength (MPa) | Elongation at Break (%) | Compression Set (%) | Temperature Range (°C) |
|---|---|---|---|---|---|
| FKM | 75 ± 5 | 15 | 200 | 15 | -20 to 200 |
| EPDM | 70 ± 5 | 10 | 300 | 30 | -40 to 150 |
| HNBR | 80 ± 5 | 20 | 250 | 20 | -30 to 180 |
Standard Compliance
RubberQ adheres to IATF 16949 standards for batch-to-batch consistency. Our in-house compounding ensures precise control over polymer ratios, fillers, and curing agents. ASTM D2000 material callouts and ISO 3601 sealing standards are rigorously followed.
CTA
For custom material compound development or IATF 16949 documentation, consult RubberQ’s engineering department.
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