Rustins tung oil rustins tuno500 this tin of 500ml tung oil from rustins is a pure natural non toxic oil which is completely free from solvent it has good penetration into all types of timber without leaving a film and its special properties make it highly resistant to water alcohol and food stuffs the oil is additive free and safe for use in contact with food forming a hardwearing finish for kitchen work surfaces chopping boards and interior woodwork rustins tuno500 tung oil 500ml