Is the BURGACLIP O-ring made of HNBR compatible with freon refrigerants and safe to use between -30Â°C and +150Â°C?

Yes. The BURGACLIP O-ring made of hydrogenated nitrile rubber (HNBR) is suitable for use with freon refrigerants in air conditioning fittings and is rated for an operating temperature range of -30Â°C to +150Â°C. HNBR offers excellent resistance to refrigerants, oils, and common refrigerant-related chemicals, and maintains good mechanical properties across the specified temperature range, making it a compatible and safe choice for typical HVAC/R sealing applications within those limits.

Does the BURGACLIP O-ring resist swelling or degradation when exposed to common Freon refrigerants over the -30Â°C to +150Â°C range?

Yes. The BURGACLIP O-ring Format, made of hydrogenated nitrile rubber (HNBR), is formulated for resistance to common refrigerants including Freons. HNBR offers good chemical compatibility and maintains physical properties across a wide temperature range; its specified operating window of â30Â°C to +150Â°C indicates suitability without significant swelling or degradation under normal exposure to typical Freon refrigerants used in air conditioning fittings. As always, compatibility can vary with specific refrigerant blends, oils, pressures and exposure durations, so verify with your exact fluid and service conditions for critical applications.

Is the BURGACLIP O-ring suitable for long-term sealing in Freon-based A/C systems across -30Â°C to +150Â°C?

Yes. The BURGACLIP O-ring Format, made of hydrogenated nitrile rubber (HNBR), is suitable for long-term sealing in Freon-based air-conditioning systems within the specified temperature range of â30Â°C to +150Â°C. HNBR offers excellent resistance to refrigerants (including common Freons), mineral oils, synthetic lubricants, and many hydraulic fluids, and maintains mechanical properties (elasticity, compression set resistance and tensile strength) across a wide temperature span. Its higher thermal stability, improved chemical resistance and low gas permeation compared with standard NBR make it a reliable choice for A/C fittings exposed to cyclic temperatures and pressures typical of HVAC systems. However, final suitability depends on system-specific factors: exact refrigerant type (some new refrigerants and blends have different compatibilities), exposure to ozone or aggressive chemicals, contact with specific lubricants, dynamic vs. static sealing, required compression set performance, and regulatory or OEM specifications. For critical or long-term applications, validate compatibility with the exact refrigerant/lubricant used and consider manufacturer data sheets, ageing tests or certification from BURGACLIP.

BURGACLIP O-ring

Additional information

Maximum operating temperature [°C]	150
Minimum operating temperature [°C]	-30

O-ring for freon for air conditioning fittings. Material: hydrogenated nitrile rubber (HNBR). Operating temperature: from -30°C to +150°C.

List of product variants

Article number	Product variant name	Nominal inner diameter	Working pressure [bar]
BU-7028-05	HNBR O-ring for freon 7x1.5 mm	-	-
BU-7028-06	O-ring for freon HNBR 7.65x1.78 mm	-	-
BU-7028-08	O-ring for freon HNBR 10.82x1.78 mm	-	-
BU-7028-10	O-ring for freon HNBR 14x1.78 mm	-	-
BU-7028-12	O-ring for freon HNBR 17.17x1.78 mm	-	-