What to lubricate a pump-up sprayer with?

I got one years ago. It has a ocuple clips to take the top offf the plunger assembly. They suggest vaseline, though some axle grease would do.

As the rest said... wash it out and put some water in top of pump, pump it a few times to clean any chemicals.

I buy the cheap 1 gallon sprayers and label each as to contents EVEN if I empty and clean after each use. Ya' don't want round up in the one you spray roses with.. even a trace amount. This way if I made up too much spray, I can release pressure and leave stored if I'm pretty sure I'm going to use again within 30-60 days..

Usually in the spring I have to assemble the sprayer with water in the tank, put a little water in top of pump under handle, then start pumping...

These cheap $10 sprayers seem to last as well as the more expensive ones.. and I don't mind putting bleach solutions in them as I never would the more expensive sprayers.. I have 4 which have worked great for the past 5 years even with the bleach in one.. 409 concentrate in another etc.. (with bleach I use all, rinse, flush after each use) Chuck

Now you're quibbling over "quibble".

You said that engines were full of rubber parts that were not affected by oil or gasoline. How is it a "quibble" that the parts in the engine are NOT RUBBER at all?

Oh, yeah... You're the jerk who thinks that the skull and crossbones on paint thinner is "a quibble" as well. I guess to you, anything that looks like rubber "is" rubber, and if paint thinner looks pretty much like water, then it must be safe to drink.

rusty redcloud

Hey, hydrocarbon, carbohydrate. Same damn thing...

Because they are rubber in the sense of the word as used by the OP. You want to pick a petty fight about definitions, which is to say, quibbling.

Please don't ever claim to be any sort of scientifically trained "anything" ever again. Next you will be telling us that plexiglass and plate glass are the same thing. Is "wood grained vinyl" really the same thing as wood? Apparently, to you, that would be a quibble.

rusty redcloud

I'll consider updating my resume. You may want to consider applying yourself to something useful and constructive rather than foolishness.

I think it is pretty clear to anyone who read what was written can figure you out pretty easily. Go ahead and have the last word if it will make you feel better. It's all you've got.

rusty redcloud

KY jelly

I watched and noted he used silicone grease. People should know if you use petroleum grease the rubber can absorb it and ruin it.

All advised here will kill the plants so it's one big Bs what are you advising here.

Silicone grease (foof grade) works and won't kill anything. Fluid film works too - it is lanolin and won't kill anything.