O-rings meet demands of new automotive refrigerant.(feature: design)

Tests have been carried out by the Society of Automotive Engineers in the USA on the effects of switching to a new refrigerant used in automotive air conditioning systems. HFO 1234yf has significantly lower global warming potential than the existing R134a standard refrigerant, and SAE sought to test air conditioning equipment components for compatibility issues.

One study on O-ring seals showed that a hydrogenated nitrile butadiene rubber …