Royco 634

ROYCO® 634 is a highly penetrating, mobile liquid lubricant that combines cleaning, lubrication and preservation of handheld weapons and small and large calibre weapons systems in a single product. It penetrates between metal surfaces and aids in removing dirt, corrosion particles and firing residues that can be abrasive to recoil and gas operated mechanisms. After cleaning, a thin preservative film forms on the surface that displaces water and provides a barrier against rust and dirt. It contains additives that enhance film strength and antiwear properties. It is used in virtually all climate conditions from −54 to 66 °C (−65 to 150 °F) and also in automotive, aviation, marine and general plant maintenance. It contains no ozone depleting compounds and meets California Clean Air Act VOC requirements.

Specification

• Qualified to and meets all requirements of MIL-PRF-63460D Am. 6

Typical Properties

• Viscosity 9.34 cSt at 40 °C, 3450 cSt at −53.8 °C; pour point −63 °C (−82 °F)
• Flash point (COC) 100 °C; specific gravity (15.6 °C) 0.87
• Four-ball wear scar (40 kg, 1200 rpm, 75 °C, 1 hour) 0.40 mm; Falex 750 lb jaw load pass
• Firing residue removal (WC-844) 90%; passes salt spray, humidity cabinet (49 °C, 100% RH, 900 hours) and water displacement tests