SST®-4 is a white low MW PTFE micropowder with particle size distribution at a mean value of 3-4 µm.

Technical Documents

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PTFE Micropowder

SST® products are Shamrock’s PTFE micropowders that are defined by particle size and distribution, molecular weight, crystallinity, surface area, oil adsorption, powder flow, and color. Made primarily from highly controlled recycled PTFE feedstocks, SST® products are used for their ability to provide slip, non-stick, water repellency, texture, release, rub, and abrasion resistance to surfaces.

Product Description:

SST®-4 is a white low MW PTFE micropowder with particle size distribution at a mean value of 3-4 µm.


SST®-4 is frequently used in both the inks and thin-film coatings applications due to its small particle size. SST®-4 is recommended for use in offset and liquid inks. SST®-4 is also recommended for use in powder, water-based, solvent-based and UV coatings at 0.5-3.0% of the total formula weight.Typical applications include can and plastic coatings.

Features and Benefits:

 Rub and Abrasion Resistance
 Slip (Low COF)
 High Temperature Resistance
 Gloss Retention

Typical Properties:

Specific Gravity:  2.15 g/cm3
Particle Size Mean Value:  3 – 4 µm
99% of Particle Under 10 µm
NPIRI Grind 2.0 max
Hegman Grind: 6.5 min
Melting Point:  608/320 °F/°C


Regulatory Status:

The components of this product are listed on multiple chemical inventories. For specific information on the applicable chemical inventories, please refer to the product SDS. This product meets the requirements of 21 CFR 175.105, 175.300, 176.170, and 176.180.

Safety, Shipping and Handling:

For complete safety, shipping and handling information please contact your regional Customer Service Representative, or our Customer Service Team at

For more information about Shamrock’s other products or capabilities please visit us at our website,


End Use Applications

Aerospace, Air Dry, Appliance, Aqueous, Architectural, Automotive, Baking, Can, Coatings, Coil, Commercial, Cookware, Flexographic, Gravure, Heat Set, Industrial, Inks, Liquid Inks, Marine, Non-Stick Industrial, Offset Inks, Overprint Varnish, Packaging, Powder, Publication, Radiation, Sheet Fed, Solvent, UV, Wood

Features and Benefits

Abrasion Resistance, Chemical Resistance, Grease Repellency, High Temperature Resistance, Mar/Scuff Resistance, Matting, Release, Rub Resistance, Slip (Cof), Texture, Water Repellency




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