DSO 705 Silicone Diffusion Pump Oil – Equivalent to DC 705

When operating industrial diffusion pumps under ultra-high vacuum (UHV) thresholds, fluid integrity dictates your entire process purity. Dinesh High Vacuum Engineering’s DSO705 is a single-component, ultra-pure silicone fluid engineered to serve as a direct, high-performance drop-in replacement for the discontinued legacy standard Dow Corning DC 705 (later Molykote fluid).

Synthesized entirely as a premium-grade Pentaphenyl-trimethyl-trisiloxane , DSO705 features the highest phenyl content possible in a silicone vacuum lubricant. This advanced molecular architecture guarantees the absolute lowest vapor pressure profile, superior resistance to accidental thermal air bursts, and uncompromised stability in radiation-heavy environments. DSO705 allows system engineers to consistently achieve untrapped ultimate pressures down to 10^-10 Torr - 10^-11 Torr when trapped with liquid nitrogen) without risk of system backstreaming.

✅Technical Equivalency & International Brand Cross-Reference :

-- Dow Corning / DuPont Molykote: Legacy DC 705 Fluid (Discontinued Grade)

-- Indomet: INDOMET PENTA Diffusion Pump Oil

-- Edwards Vacuum: Edwards 705 Silicone Fluid / 705EU

-- Leybold / Leybonol: LEYBONOL LVO 521 Premium Silicone Oil

🛡️Common System Applications :

-- Advanced Vacuum Metallizing : High-purity automotive reflectors, decorative novelties, and consumer electronics casings.

-- Optical & Semiconductor Thin-Film Coating : Electron-beam vapor deposition and sputtering across micro-circuits, architectural glass, and multi-layer anti-reflective lenses.

-- Aerospace Simulation : Human-rated thermal vacuum chambers requiring stable, non-toxic environment creation.