Best spray lube for plastic?

Joined
Feb 6, 2025
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Those swivel tubes on a backpack blower.

I've been using WD-40 Dry, but it doesn't seem to last very long.

The internet is saying that a wet lube with petroleum oil as a carrier base will degrade the plastic over time.

They're recommending a dry lube based off of silicone or PTFE.
 
I've found through the years that dry lube of most any type doesn't work very well, or last very long. Try a spray silicone. Most everyone makes a type of silicone spray. Spray it on generously to flush out any dust or dirt, work it in, then wipe off any excess. Silicone is just about perfect for plastic of most any type.

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I've had real good luck with PB Blaster Silicone Spray. It says to contain a "no track" film that won't attract dust or dirt. So far, in the environments I've used it in, it does stay rather clean. I'd use something like that or just suck it up and use silicone paste (like for brake caliper pins) and wipe excess dirt/grime off as it builds up.
 
Another vote for silicone. This too will have to be reapplied now and then just not as often. Another option would be a plastic restorer product used for car detailing. Some claim to have ceramic properties that don’t attract dust/dirt.
 
Good to know. Have 2 back pack leaf blowers. The swivel's haven't been sticking, yet, but now I know to use silicone spray. Thank you BITOGER'S !! :)
It's the elbow swivel where it goes into the fan housing that needs the lube.

The rest of the swivels further down the tube swivel fine without anything.
 
Tonight I found out that my car's glove box door needs a spray lube for the plastic latch mechanism.
 
I'm still trying to figure out when you would use a regular silicone spray as opposed to the silicone dry version and visa versa.
 
I'm still trying to figure out when you would use a regular silicone spray as opposed to the silicone dry version and visa versa.
Guessing that since you can use silicone around electronics, that doesn’t necessarily mean that the carrier is safe to do so. I would also think that until a wet silicone spray fully dries it is more susceptible to attracting dust/dirt than a dry silicone. Once again, just guessing. 🤷‍♂️
 
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