Leak-Proof Silicone Gaskets Designed for Oil and Fuel Resistance

  • group nameCustom Silicone Seals

  • Min Order100000 piece

  • brand nameFromRubber Silicone & Plastic OEM Manufacturer

  • modelBH-seals

  • payment methodL/C, D/A, D/P, Western Union, MoneyGram, T/T, Paypal

  • update timeTue, 26 May 2026 17:36:19 GMT

Paramtents

  • Design Follow 3D Drawing Or Physical Object

  • Process Molding

  • Feature High-performance leak-proof

  • MOQ 100000pcs

  • Application Automotive, Marine, and Industrial Sealing

Packging & Delivery

  • Size46cm x18cm x11cm

  • Min Order100000 piece

Briefing

leak-proof silicone gaskets for oil and fuel resistance. Ideal for automotive, marine, and industrial sealing applications.

Detailed

Leak-Proof Silicone Gaskets
designed for extreme oil & fuel resistance

ASTM D2000 · SAE J200 · ISO 9001:2024 certified

beyond standard sealing

These premium fluorosilicone-modified gaskets deliver exceptional performance in continuous contact with gasoline, diesel, bio-fuels, synthetic oils, and transmission fluids. Zero leak even after 5000h accelerated aging. Perfect for oil pans, fuel pumps, marine engines, and industrial gearboxes. 

temp range -60°C to +230°C swell <5% in IRM 903 oil  E85 / methanol resistant

 certified fluid compatibility

fluid / medium test duration / temp volume change hardness change
ASTM #1 oil 1000h @ 150°C +1.8% -2 pts
IRM 902 (oil) 500h @ 125°C +3.2% -3 pts
Fuel C (50/50 iso-octane/toluene) 70h @ 23°C +6.5% -5 pts
diesel B20 1000h @ 60°C +4.1% -3 pts
E85 ethanol 1000h @ 40°C +7.0% -6 pts
automatic transmission fluid (Dexron VI) 500h @ 150°C +2.5% -2 pts

 standard gasket dimensions & physicals

profile / type thickness range hardness (shore A) tensile (MPa)
solid sheet (custom die-cut) 0.8 – 6.4 mm (±0.10) 60 ±5 9.2
reinforced fabric insert 1.2 – 3.2 mm 75 ±5 11.5
O-ring cord stock 2.0 – 10.0 mm Ø 70 ±5 8.8
molded flange gasket 1.5 – 5.0 mm 65 ±5 9.5

 field-proven in: heavy-duty trucks, agricultural sprayers, transfer cases, hydraulic pumps, fuel rail seals, and aerospace ground support. Every lot is tested for compression set and fluid resistance.

Leak-proof silicone gaskets for oil and fuel applications – blue fluorosilicone material sample
tested 5000h in diesel / E85

physical properties

property value
density (g/cm³) 1.28 ±0.02
tear strength (kN/m) 24
elongation at break 400%
compression set (22h/175°C) 16%
volume resistivity 1.2 x 10¹⁴ Ω·cm
brittle point < -65°C

extended fuel aging

fuel type swell after 1000h
diesel (low sulfur) +3.8%
gasoline (E10) +5.2%
jet fuel A-1 +4.0%
hydraulic oil (phosphate ester) +6.5%

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ask about our leak-proof silicone gaskets

 certifications & test methods

All gaskets are manufactured under strict process controls and tested per international standards.

standard requirement typical result
ASTM D2000 M2GE 507 heat resistance, oil swell pass (class GE)
SAE J200 tensile / elongation 9.5 MPa / 390%
ISO 3605 (fuel resistance) Fuel C 70h @ 23°C volume +6%
REACH / RoHS phthalate-free, no heavy metals compliant
UL 94 (flammability) HB rating passed, V-0 available

 why silicone outperforms

Unlike nitrile (NBR) or neoprene, our fluorosilicone formulation maintains flexibility and sealing force even after long-term exposure to aromatic hydrocarbons. The unique vinyl-methyl-silicone backbone with fluorocarbon side chains provides a barrier against polar and non-polar fluids.

 typical applications

Oil pan gaskets, valve covers, fuel pump mounting, diesel injector seals, hydraulic reservoir covers, marine outboard lower unit gaskets, and chemical transfer flanges. Available in FDA grade for incidental food contact.

 request engineering sample or cad drawing get a quote →

*All test data based on independent lab reports. Typical values, not specifications. Contact our engineers for your specific fluid and temperature requirements. 

Nearest port for product export
FOB shenzhen
Delivery clauses under the trade mode
FOB, CFR, CIF, EXW, FCA, DDP, Express Delivery
Acceptable payment methods
T/T, D/P D/A, Credit Card, PayPal, Westem Union, Cash
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