Solent Maintenance SM4-500C maintenance spray is ideally suitable for: LUBRICATING - as it is a high performance mineral oil based lubricant with PTFE. DISPLACES WATER - To help Start damp petrol engines. PENETRATES - To allow easy release of rusty fixings. CLEANS & PROTECTS - Cleans metal surfaces and prevents rusting of treated parts. It does not contain naphtha, kerosene or paraffin which are all associated with operator skin dryness, cracking or dermatitis. It is electrically non-conductive at normal ranges found in the home. Care must be taken if used on some electrical plastic components where 'crazing' may occur. Test for suitability on painted surfaces before general application. A non-flammable CO2 propellant is used that in the large 500ml can size will deliver up to 15% more product than some 'like for like' butane propelled aerosols. Does not contain silicone.