Description

Fomblin-Yr (H-Vac) is a high-performance perfluoropolyether (PFPE) vacuum pump fluid. This specialized synthetic lubricant is engineered for exceptional chemical inertness and thermal stability in demanding environments. It is essential for industries requiring reliable, long-lasting vacuum performance with minimal maintenance and contamination risk.

Application

• Primary fluid for high-vacuum (H-Vac) and ultra-high-vacuum (UHV) rotary vane and diffusion pumps.
• Lubricant and sealing fluid in chemical processing equipment handling aggressive media like strong acids and organic solvents.
• Inert lubricant for valves, compressors, and bearings in semiconductor and electronics manufacturing.
• Functional fluid in aerospace and analytical instrumentation requiring extreme reliability.
• Base oil for formulating high-stability greases used in oxygen-rich or corrosive atmospheres.
• Heat transfer fluid in applications where non-flammability and chemical resistance are critical.

Basic Information

Product Name	Fomblin-Yr (H-Vac)
CAS No.	6991-67-9
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Perfluoropolyether YR; PFPE YR; Fomblin YR Vacuum Fluid; Krytox (alternative PFPE brand); Demnum (alternative PFPE brand); Perfluoroalkylether; Poly(oxy-1,2-ethanediyl), .alpha.-hydro-.omega.-hydroxy-, ether with .alpha.-fluoro-.omega.-fluoro-poly(difluoromethylene)
EINECS	Contact for details

Quality Control

Our Fomblin-Yr (H-Vac) is produced and tested to meet stringent industry specifications for high-performance vacuum fluids. Each batch undergoes rigorous analysis to ensure critical parameters such as viscosity, vapor pressure, and chemical purity are consistently met. A Certificate of Analysis (COA) detailing these specifications is available for every shipment to guarantee traceability and performance.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from heat, sparks, and open flame. Ensure containers are kept tightly sealed when not in use to prevent moisture absorption and contamination.

Specification

Item	Specification
Appearance	Clear, Colorless Liquid
Identification (IR)	Conforms to Standard
Kinematic Viscosity (at 20°C)	Contact for details
Vapor Pressure (at 20°C)	< 1 x 10⁻⁸ mbar
Pour Point	< -50°C
Acidity/Alkalinity	Neutral
Water Content (KF)	< 50 ppm

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.