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Rubber gasket is formed by vulcanization once with various of material, any color, all kinds of shape. such as black, white, yellow, red, etc. Rubber gasket with different material has different property, Such as EPDM rubber gasket, Silicone rubber gasket, FKM rubber gasket, etc.
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The DH-G-RU Rubber Gasket is a versatile sealing component engineered for low-to-medium pressure applications, available in nitrile rubber (NBR), fluororubber (FKM), and ethylene propylene diene monomer (EPDM) variants. Produced via precision compression molding with strict dimensional control (tolerance ± 0.05mm), it meets RoHS, REACH, and ASTM D2000 standards. Standard sizes range from 50×50mm to 2000×3000mm (thickness 0.5mm-10mm), with custom shapes (API 605, ASME B16.5) available in 48-hour lead time.
Material-Specific Performance:
NBR Variant: Oil resistance (volume swell < 5% in 100℃ engine oil), operating temp -40℃ to +120℃.
FKM Variant: Chemical resistance (resists 98% H₂SO₄), operating temp -20℃ to +200℃.
EPDM Variant: Weather/water resistance (swell < 3% in 80℃ water), operating temp -50℃ to +150℃.
Sealing Performance: Compression rebound ≥ 60% (1000 cycles, 5MPa); air tightness ≤ 5×10⁻⁶ Pa·m³/s (ISO 12747-2).
Dimensional Stability: No warpage after 1000h at max temp; shrinkage < 0.3% (ASTM D1204).
Enhancement Options: Fabric reinforcement (nylon/aramid) for pressure resistance, PTFE coating for anti-sticking.
Automotive: Radiator hoses (EPDM), fuel system gaskets (NBR), engine oil pan seals (FKM).
HVAC: Chilled water pipe flanges (EPDM), hot water heater gaskets (NBR).
Food Processing: Dairy equipment gaskets (FDA-grade EPDM), beverage filling machine seals.
Marine: Seawater cooling system gaskets (EPDM), fuel tank gaskets (NBR).
Oil/Gas Contact: NBR variant (best for mineral oil, gasoline).
Chemicals/High Temp: FKM variant (ideal for acids, solvents, 150-200℃).
Water/Weather Exposure: EPDM variant (outdoor HVAC, swimming pool equipment).
Food Contact: FDA-grade EPDM (meets 21 CFR 177.2600) or NBR.
Hardening (Shore A hardness increase > 15 points) results from:
Exceeding max temperature (e.g., NBR above 120℃).
Exposure to incompatible media (e.g., EPDM in petroleum oil).
UV radiation (uncoated EPDM outdoors).
Prevent by selecting correct material and using UV-stabilized coatings for outdoor use.
Yes, the FKM variant with vacuum-grade PTFE impregnation works for low-to-medium vacuum (down to 1×10⁻³ Pa). For high vacuum (>1×10⁻⁵ Pa), choose the EPDM variant with metal core reinforcement; ensure flange roughness Ra 0.4-0.6μm for optimal sealing.
Rubber gasket: | Rubber gasket |
Material: | Silicone NR, NBR, EPDM, CR, SBR, BR, IR, VITON |
Hardness:: | Silicone about 20-80 Shore A; Rubber about 30-90 shore A |
Temperature Resistance: | -40℃~-300℃ |
Color: | White, black,yellow,blue, red,etc. |
Feature: | Oxidation, Chemical, oil, acid, alkali, weather resistance colorful, Anti-aging, good flexibility, good elasticity |
Appliance: | Automotive, industry, building, train, airplane, construction, etc. |
