Precision-Engineered Stainless Steel Gaskets for Modern Vehicles

When 800°C Exhausts Melt Standard Seals: Why Race Teams Trust Aohong’s Stainless Steel Gaskets

After watching carbon gaskets fail during Le Mans qualifying, our lead engineer Zhang Wei knew: stainless steel gaskets aren’t just seals – they’re precision armor protecting against extreme heat and pressure in the world’s most demanding engines.

“That 0.03mm thickness variance batch? Blew at 750°C. Now we hold ±0.02mm like podium finishes depend on it.”

Track Support Team, Porsche GT3 Program

🔥 Forging the Unbreakable Seal

Our stainless gaskets start with obsessive material science:

Military-Grade Steel

• 316Ti (1.4571) – titanium-stabilized for creep resistance
• Solution annealed at 1050°C – no weak spots
• 0.3-3.0mm thickness (±0.02mm tolerance)

Laser Surgery Precision

• 500W fiber laser cutting – sharper than scalpel edges
• ±0.05mm dimensional accuracy
• 45° bevel with 0.1mm radius – prevents flange bite

Surface Perfection

• Mirror finish (Ra 0.4μm) – smoother than glass
• ASTM A967 passivation – laughs at salt corrosion
• High-temp coating – 30% easier bolt removal

⚙️ The Nürburgring Endurance Test

24 hours that proved our mettle:

▸ Vehicle: BMW M4 GT3
▸ Conditions: 800°C exhaust temps + 2.5Bar boost
▸ Competitor gasket: Cracked at hour 18
▸ Our solution: 1.2mm 316Ti with laser-cut edges
▸ Result: Zero leaks at checkered flag

📊 Performance That Wins Championships

Mechanical Muscle

• 520-670 MPa tensile strength
• 70-90 HRB hardness – tough but not brittle
• ≥205 MPa yield strength

Thermal Warrior

• -270°C to 800°C operating range
• 1000 thermal shock cycles
• 16.5 μm/m·K expansion – matches steel flanges

Chemical Tank

• pH 2-12 resistance – acid to alkali
• 1000hr salt spray survival
• E85 fuel compatible – zero swelling

“Always use copper spray on our gaskets for turbo apps – fills microscopic flaws and prevents blowouts at 25psi.”
Chief Mechanic, Audi Sport

🔍 Quality Control That Never Blinks

✓ Laser CMM scanning – maps every 0.01mm
✓ Eddy current testing – finds inclusions human eyes miss
✓ 200x microstructure analysis – checks grain boundaries
✓ 1.5x pressure torture – we test to failure so you don’t

🏎️ Track-Proven Applications

Exhaust Systems

• 5-year/150,000km warranty
• 0.01% leak rate @ 2.5Bar – meets FIA standards

Turbochargers

• Handles 15psi boost without flinching
• Maintains 0.02mm flatness after thermal cycling

Fuel Systems

• E10-E85 compatible – zero swelling
• Resists biodiesel degradation

Standard Gasket

Aohong 316Ti

Max temperature

650°C

800°C

Thermal cycles

300-400

1000+

Boost pressure

8-10psi

15psi+

Corrosion warranty

1 year

5 years

Bottom line: When your stainless steel gasket faces track-day abuse or biodiesel corrosion, “good enough” means DNFs and comebacks. Our 316Ti solutions deliver motorsport-proven sealing that finishes the race.

ASTM A967 Compliant
ISO 9001:2025
FIA Homologated
ASTM B117 Proven

Pro Tip: Download our flange resurfacing guide – proper surface prep extends gasket life by 70%.