WS2 Coated Fasteners

Tungsten Disulfide (also known as WS2) is a low friction dry lubricant coating that is applied utilizing pressurized air that impinges a dry metallic coating without heat, binders, or adhesives. The coating bonds instantly to metal or resin with a thickness of just 0.00002″ (1/2 micron). WS2 coating improves the performance and service life of fasteners better than any other dry lubricant as it reduces friction & noise, improves mold release, and solves any potential excessive wear issues, seizing, galling, or fretting.

Coating Coefficient of Friction Max Operating Temperature Color
WS2 0.03 – 0.09 1,200⁰F (in vacuum) Blue/Gray

How is the coating applied?

  1. The parts are first thoroughly cleaned to remove any oil, grease, dust, or other substances from them.
  2. They are then pre-treated with an abrasive surface blasting.
  3. The WS2 is then applied via high speed impingement with specialized application equipment.
  4. The parts are then ultrasonically cleaned to remove unbonded coating.
  5. The last step is inspection to ensure proper, even, application of the coating prior to packaging.

What are the main benefits and capabilities of WS2 Coating?

  • The coating has a low friction which improves its performance and extends the life of the coated fastener.
  • Stops galling, fretting, and friction caused by dissimilar metals and their different hardness factors.
  • 100% lubricity throughout its texture.
  • Molecularly bonds to the material it is applied to.
  • Maintains the dimensional integrity of the fastener, to within 1/2 micron, with no build-up.
  • Withstands loads up to 100,000 PSI.
  • No bakeout or heat curing is required.
  • Operating temperature range of -460°F to 1,200°F (-273°C to 650°C).
  • The coating is inert, inorganic, non-toxic, non-distortive, as well as resistant to most solvents.
  • The plating can be eliminated by removing the bonded substrate.

What applications is this type of coating used for?

Uses for WS2 coatings generally include applications that require a lubricant that does not react when in use.

  • Vacuum applications
  • Automotive applications
  • Military applications
  • Fuel cell applications
  • Circuitry and microelectronics
  • Photonics and photovoltaics

How can we help you?

Pure Tech Components is the premier UK distributor for UC Components, Inc. RediVac® line of fasteners, washers, hex nuts, and O-rings. We provide only the best specialised fasteners to a wide range of industries, including medical, food processing, optical, vacuum, semiconductor, and R&D. Partnering with us gives you the confidence and reassurance you need to concentrate on your customer’s needs without worrying or compromising on cost, quality, or customer service. Contact us today for more information or to place an order.

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