These are used in the same applications as our NFE Commander series (same ISO 16028 interchange), however the base models have higher pressure ratings than the NFE and they are available for users or OEM's who request the Stucchi brand only - which are made to more stringent quality control standards. Compatible with Parker FF370, Safeway FF49 series, Perfecting H series, Hansen QA29000, and Aeroquip FD49/FD89/FF series. They come with Buna-N seals (-29°C (-20°F) to +100°C (+212°F), higher temperature Viton seals available upon request).