Brayco® Micronic 756 is a high-performance, petroleum-based hydraulic fluid formulated for demanding aerospace and precision servo applications where reliable fluid cleanliness, low viscosity at cold temperatures, and thermal stability are critical. Micronic 756 is engineered to deliver consistent control and long service life in small-volume hydraulic servo systems and other precision hydraulic controls.
Type / Color: Petroleum-based hydraulic fluid — red.
ISO viscosity grade: ISO VG 15.
Military qualification: Meets / is qualified to MIL-PRF-5606 (verify the exact amendment/revision for your lot on the PDS).
NATO code / military symbol: H-515 (Military symbol OHA on PDS).
Temperature range (design): −54 °C to +135 °C (−65 °F to +275 °F).
Typical applications: Autopilots, shock absorbers, brakes, flap-control mechanisms, missile hydraulic servo systems and other servo-controlled hydraulic equipment.
Particle control: Filtered to meet strict particle contaminant requirements (see the PDS for particulate cleanliness levels and filtration recommendations).
Shelf life (manufacturer guidance): Commonly quoted up to 6 years from date of manufacture — verify on the current PDS.
Key features & benefits
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Stable low-temperature flow: ISO VG 15 viscosity and formulation ensure responsive operation in extreme cold, maintaining fluidity for precise servo action at very low temperatures.
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Thermal and oxidative stability: Designed to resist viscosity breakdown and deposit formation across its operating temperature window, helping extend service intervals.
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Proven military performance: Manufactured to meet MIL-PRF-5606 specifications used widely in aviation and military hydraulic systems (confirm revision in PDS).
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High cleanliness control: Supplied with particle control/filtration to limit contaminant-related wear and valve malfunctions in precision servo systems.
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Compatibility & seal performance: Formulated to be compatible with many common seal elastomers used in aircraft hydraulic components — consult the PDS for specific elastomer compatibility.
Performance & properties (summary)
Micronic 756 combines a low nominal viscosity with additives that support anti-wear performance, oxidation resistance, and demulsibility. It offers a balance of low vapor pressure (reduced evaporation loss) and thermal durability appropriate for small-volume aerospace hydraulic systems where stable control and minimal maintenance are required.
Particle control & cleanliness
This product is filtered and tested to meet stringent particle contamination requirements. For mission-critical hydraulic servo systems, particle cleanliness is as important as fluid chemistry — follow the manufacturer’s recommended filtration and maintenance schedule as noted in the PDS.
Typical packaging
Available in 5-gal pails, and 55-gal drums. (contact us for exact packaging options, pallet quantities, and lead times).
Storage & handling (brief)
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Store sealed in the original containers away from direct sunlight, heat sources, and contamination.
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Protect from moisture and foreign particulates.
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Keep containers tightly closed when not in use. For full handling and safety instructions, consult the product SDS.
Warehouse instruction
Protect packages from the elements by storing them under cover. When outdoor storage cannot be avoided, position drums horizontally to prevent water ingress and protect identification markings. Ensure products are not exposed to temperatures exceeding 60 °C, prolonged direct sunlight, or freezing conditions.
