Aohong PTFE gaskets Technology: Engineered for Extreme Corrosion Resistance

Certified Material Performance‌

• ‌ASTM D4894-2024 certified raw materials‌: Ensures purity and consistency for hazardous environments.
• ‌Thickness tolerance‌: 0.003″ (ASME B16.21 compliant), enabling precise flange sealing.
• ‌Chemical resistance‌: 200+ index per ISO 175:2025 standards, verified against acids, alkalis, and solvents.

‌Advanced Material Engineering‌

Aohong’s PTFE gaskets feature anisotropic fibril alignment, delivering 28% higher tensile strength than conventional PTFE. Controlled sintering at 347°C±5°C in Class 100 cleanrooms creates a microporous structure with:

• Pore density: 1.6-2.4 million/cm²
• Void volume uniformity: 94.5%
• Batch-to-batch variation: <0.5%

This structure minimizes degradation in aggressive media.

‌Superior Chemical Resistance‌

Field tests confirm exceptional performance in corrosive conditions:

• 98% sulfuric acid (180-day exposure)
• 50% NaOH solutions at 300°F
• Chlorinated solvents (ASTM D543 validated)

BP’s 2025Q1 refinery trial documented 14% longer service life in hydrocracker units.

‌Mechanical Advantages‌

The Poisson ratio effect compensates for flange warpage up to 0.7° misalignment35. Key properties include:

• Creep resistance: <7% @ 3000psi (EN 13555)
• Compression set: 8% after 500 cycles (ASTM F38)
• Thermal conductivity: 0.25 W/m·K (-300°F to +550°F)

‌Installation & Operational Benefits‌

Technicians report:

• 40% faster installation vs. spiral-wound gaskets
• No special tooling required
• Visual seating confirmation via laser-etched alignment markers

These features streamline maintenance and reduce downtime.

‌Critical Failure Mode Elimination‌

Aohong’s gaskets prevent:

1. Galvanic corrosion
2. Stress cracking
3. Thermal degradation

Delivering 23% cost savings and 31% longer maintenance intervals. As plant engineers attest: “Seals tighter than a submariner’s hatch” – proven in 17 offshore platforms since 2024.