Over-Compression: When 'Tighter' is not 'Better' for Gasket Performance.

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.