What is the compatibility of the TW connector gasket DIN 28450, NBR, type GSD with common fuels and chemicals at -20Â°C to +70Â°C?

TW connector gasket DIN 28450, NBR, type GSD exhibits good general compatibility with many hydrocarbon fuels and typical petroleum-based oils within the stated service temperature range of -20Â°C to +70Â°C. Nitrile (NBR, Perbunan) is resistant to gasoline, diesel, kerosene, hydraulic oils, motor oils, and many lubricants, retaining sealing properties and tensile strength under normal exposure to these media and temperatures. Limitations and caution: - NBR has poor resistance to aromatics and certain additives at elevated concentrations (e.g., high-aromatic gasoline blends, benzene, toluene, xylene) which can cause swelling, softening, and loss of mechanical integrity. - NBR is incompatible or only marginally resistant to strong acids and bases, ketones (acetone), esters, chlorinated solvents, and many glycols at prolonged exposure; these can cause hardening, cracking, or severe swelling. - Oxygenated fuels (higher ethanol or methanol blends than typical EN228/EN590 levels) and biodiesel (fatty acid methyl esters) may reduce NBR lifespan versus pure hydrocarbons; compatibility decreases with higher polar solvent content and lower temperatures near -20Â°C where flexibility decreases. - Low-temperature use near -20Â°C may reduce elasticity and increase risk of leakage under dynamic loading; high end near +70Â°C approaches upper limit for long-term exposure . sustained temperatures plus aggressive chemicals accelerate aging. Recommendation: For critical applications or exposure to aggressive solvents, oxygenated fuels, biodiesel, or unknown chemical mixtures, perform specific compatibility testing or consider alternative elastomers (e.g., FKM, EPDM, HNBR) better matched to the media.

Can TW connector gasket DIN 28450, NBR, type GSD tolerate long-term exposure to biodiesel and ethanol blends within -20Â°C to +70Â°C?

TW connector gasket DIN 28450, NBR, type GSD Format: NBR (Perbunan) offers good resistance to mineral diesel and many hydrocarbon fuels but has only limited chemical compatibility with biodiesel (FAME) and short-chain alcohols like ethanol. Within -20Â°C to +70Â°C, short-term or occasional exposure to low-concentration biodiesel blends and ethanol may be acceptable, but long-term continuous exposure-especially to high-percentage biodiesel (â¥B20) or ethanol blends-will likely cause swelling, loss of elasticity and premature aging of the NBR gasket. For reliable long-term service with biodiesel/ethanol blends, choose a gasket material with proven compatibility (e.g., FKM/Viton or specific HNBR grades) rather than TW connector gasket DIN 28450, NBR, type GSD Format.

Does TW connector gasket DIN 28450, NBR, type GSD resist fuel vapor swelling or degradation between -20Â°C and +70Â°C?

TW connector gasket DIN 28450, NBR, type GSD: NBR (nitrile, Perbunan) gaskets generally offer good resistance to hydrocarbons, including many fuels and their vapors. In the given temperature range (approx. -20Â°C to +70Â°C) NBR maintains adequate mechanical properties and chemical compatibility with common fuel vapors, so it is typically resistant to swelling and degradation caused by fuel vapors under normal service conditions within that range. However, actual resistance depends on fuel composition (aromatics, oxygenates like ethanol or MTBE increase aggressiveness), exposure time, pressure, and concentration of vapors. NBR performs well with diesel, kerosene and many gasoline blends with low ethanol content, but prolonged contact with high-ethanol fuels, strong aromatic-rich fuels, or aggressive additives can cause increased swelling, hardening or loss of elasticity. Operating at the temperature extremes can slightly reduce performance (brittleness near -20Â°C; softening near +70Â°C), which may affect sealing over long-term use. Conclusion: TW connector gasket DIN 28450, NBR, type GSD is generally resistant to fuel vapor swelling and degradation between -20Â°C and +70Â°C for standard hydrocarbon fuels, but verify compatibility with specific fuel formulations (high ethanol/aromatic content or additives) and consider application-specific exposure duration and conditions for final suitability.

Gasket coupling TW DIN 28450, NBR, type GSD

Additional information

Maximum operating temperature [°C]	70
Minimum operating temperature [°C]	-20

A profile gasket for a TW (tankwagen) coupling, type GSD (for a 4″ coupling, an O-ring gasket type TWO is used). Material: NBR (NBR, perbunan). Temperature range (approximate): from -20°C to +70°C.

List of product variants

Article number	Product variant name	DN	BAR	Availability	Price	Quantity	Actions	Catalogue
TW-GSD-050-NBR	Gasket GSD 2" 50 mm, NBR	-	-	In stock	0 zł		Enquiry
TW-GSD-080-NBR	Gasket GSD 3" 80 mm, NBR	-	-	In stock	0 zł		Enquiry

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A profile gasket for a TW (tankwagen) coupling, type GSD (for a 4″ coupling, an O-ring gasket type TWO is used). Material: NBR (NBR, perbunan). Temperature range (approximate): from -20°C to +70°C.