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Dongguan Bohao Electronic Technology Co., Ltd.

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Leak-Proof Silicone Gaskets Designed for Oil and Fuel Resistance

group name: Custom Silicone Seals

Min Order: 100000 piece

brand name: FromRubber Silicone & Plastic OEM Manufacturer

model: BH-seals

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

update time: Wed, 13 May 2026 05:19:58 GMT

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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

46cm 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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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.

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