Sandstrom 28A is a thermoplastic, air drying solid film lubricant containing molybdenum disulfide and corrosion inhibiting pigments. It prevents corrosion, galling, seizing and fretting, and is a low friction coating with long wear life from −196 to 149 °C under loads exceeding 100,000 psi. It suits in-plant and field use where baking is not desirable or practical; once cured it is virtually unaffected by atmospheric and fretting corrosion, acids, oils and degreasers. It contains no graphite or toxic heavy metals and uses non-HAP solvents. It is supplied as marker/brush pen, aerosol and bulk, and replaces 26A, 27A and #238.
Typical Properties
- Coefficient of friction 0.07 (ISO 16047); load carrying capacity 2500–3000 lbf
- Salt spray (ASTM B117) 1000 hours on steel and aluminium; wear life 100–200 min
- Dry film thickness about 0.3 mil; colour flat dark grey; VOC 606 g/L
Storage
- Below 38 °C; 1 year from manufacture for MIL and AS specifications
| Packing | 16 OZ or 1 QT or 1 USG |
| Specifications & Approvals | |
|---|---|
| Specification |
MIL-L-23398D
QPL qualified
MIL-PRF-46147D
Type I
(meets)
|
| NSN · P/N · CAGE |
9150-01-476-0553
· 28A
· CAGE 34227
(EA)
9150-01-608-7446
· SANDSTROM 28A
· CAGE 34227
(CN)
|
| NATO Code | S-749 |
| CAGE (Manufacturer) | 34227 |