Medical
Inert, Non-Toxic, Non-Migrating Dry Film Lubricant
USP Class VI Approved
USP Class VI is the gold standard for medical-grade raw materials. Tungsten Disulfide passed USP Class VI standards. It exhibited a very low level of toxicity by passing all of the tests requirements. All procedures performed by a third party where certified to ISO 13485:2003
Clean Room Applications
Tungsten Disulfide is ideal for clean room applications that absolutely need to remain dry. Tungsten Disulfide is inert, non-toxic and non-corrosive which makes it perfect for when migrating substances can't be risked. WS2 has been used on a variety of medical and dental components such as surgical instruments, MRI and diagnostic equipment. Gamma radiation and ethylene oxide will not affect tungsten disulfide.
Medical Grade Mold Release
Tungsten Disulfide can be used as a safe, inert mold release coating. Many medical injection molders run their molds without any mold release because of concerns that it will contaminate the final product. This can cause slower cycle times and excessive wear on the mold. A WS2 coating can easily improve efficiency.
WS2 Technical Information
Composition:
A single layer of Tungsten Disulfide at .5 microns thick
Molecular weight of 248.02
Density of 7.4 gms/cc
Hardness of 30 Rockwell C
Non-magnetic
Uniform silver-gray in color
Substrates:
All ferrous and non-ferrous metals and selective manmade solids and plastics.
However, the harder the substrate, the better the bond.
Adhesion:
High velocity impingement applied at ambient air temperature.
No cure time required
No binders or additional adhesives
Temperatures Range:
-460°F to 1200°F (-273°C to 650°C) in normal atmosphere
-360°F to 2400°F (-188°C to 1316°C) in hard vacuum
Load Capacity/Pressure:
Same as substrate to 300,000 psi
Coefficient of Friction:
Dynamic 0.035 Static 0.07
Coefficients lower then .05 are attainable but will vary with humidity
Chemical Stability:
Inert, non-toxic and non-corrosive
Accepts petrochemical oils and greases, synthetic oils, silicone lubricants and hydraulic fluids.
Does not prevent corrosion of substrate
Lox Compatibility:
Insensitive to detonation by or in the presence of oxygen