Casual contact is fine. RustBlast should not affect wiring, rubber bushings, hoses or boots as long as the contact is incidental and you rinse it off with water. RustBlast is a water based acid etch, so the rule is the same rule that applies to the metal: do not let it dry in place, rinse thoroughly, and dry the area.
What Casual Contact Means
Working on a chassis in place, you are not going to keep RustBlast off every wire loom and grommet. Incidental overspray and drips that land on wiring or rubber and then get rinsed with the rest of the area are what the answer covers. What it does not cover is deliberately soaking a rubber or plastic component, or leaving RustBlast standing on one for an hour because that section of the frame needed a long dwell.
Where you can, mask or move the vulnerable parts. Where you cannot, rinse generously.
Cured Coatings Are Not at Risk
RustBlast will not disturb a fully cured coating, so existing paint and cured undercoating on the chassis are not in danger while you treat the bare metal next to them. See RustBlast over cured coatings for the detail.
Personal Protective Equipment Is Not Optional
The RustBlast directions state that protective gloves and eyewear should be worn at all times when using this product. Working overhead under a chassis puts your face directly beneath everything you spray, so eye protection matters more here than on a bench part, not less. Work in a well ventilated area.
Rinse the Whole Area, Not Just the Metal
After the dwell time is up, rinse thoroughly with water and then allow the surface to dry completely. Direct the rinse at everything RustBlast could have reached, including the parts you were not trying to treat. Then dry the bare metal right away to minimize flash rust.
Frequently Asked Questions: RustBlast Safety on a Chassis
Still have questions about using RustBlast on a chassis? Contact us for help.
