NEW LOOK. SAME TRUSTED FORMULA SINCE 1944.

Est. 1944 · Lineman invented, industry tested · made in oregon

Lower resistance at every connection.

Silver plating powder you rub on by hand, right in the field.

A damp cloth, a little powder and 15–30 seconds of firm rubbing. No plating tank, no electricity, no shop. Conducto-Lube carries the same silver into contacts that move.

Cool-Amp Silver Plating Powder jar
Cool-Amp · plates bolted joints
Conducto-Lube Silver Lubricant jars
Conducto-Lube · lubricates moving contacts
~10% lower Cool-Amp contact resistance vs. bare copper, bolted busbar test
29–68 µΩ Conducto-Lube tested on hinges, contacts and switches at 50–300 A
No voltage limit Both products. Indefinite shelf life in the original container.
Since 1944 Lineman invented in the family basement.

Two products. One question.

Does the contact stay put, or does it move? That decides it. Some joints need both.

Cool-Amp Silver Plating Powder, 16oz

Cool-Amp Powder

For fixed, bolted joints. Bonds a permanent silver surface to copper, brass and bronze. Bus bars, lugs, CT terminals, welder secondaries, and more.

Size
Details
Conducto-Lube Silver Lubricant, 8oz

Conducto-Lube

For contacts that move. Pure silver in a grease. Lubricates and lowers resistance on blades, hinges, breakers and fuse holders, and more.

Size
Details
Use bothPlate the surface with Cool-Amp, then apply Conducto-Lube to the face that moves.

Find your application

Used by public utilities, automotive welding lines and hobbyists, from substations to the ham radio bench.

Not on the list? Ask us which product fits.

Find your application
Bus bars, bolted Cool-AmpConducto-Lube
Cable terminals & lugs Cool-Amp
Current transformer terminals, clamps & fittings Cool-Amp
Knife-blade & hinge switches, disconnects Conducto-Lube
Circuit breakers, fuse holders Conducto-Lube
Resistance & spot welders Cool-AmpConducto-Lube
RF transformers Conducto-Lube
Ham radio connections, PCBs Cool-Amp
EV & high-amp DC contacts Conducto-Lube

Every microhm at a joint turns into heat.

Copper grows an oxide film that resists current where surfaces touch. Silver's oxide stays thin and conductive. Joint heat = I²R, so the payoff grows with amperage.

Extra heat per joint from a 23 µΩ difference
100 A0.2 W
500 A6 W
1,000 A23 W
2,000 A91 W
Cool-Amp · bolted busbar30 ft-lbs · µΩ
See the adhesion and thickness data
Conducto-Lube · moving contactsAverage, 50–300 A
29 µΩHinges
39 µΩContacts
68 µΩSwitches

Many joint compounds rely on zinc or graphite. Conducto-Lube carries pure silver, roughly 4× the conductivity of zinc, and works from −25 to 410 °F.

See how it fills the gaps
Thermal image of the lug before treatment
Before208–218 °F
Thermal image of the lug after Cool-Amp
After80–119 °F

Repaired in place. About 100 °F cooler.

At a municipal water treatment plant, a corroded, hot bolted lug on a chlorine generation reactor was treated with Cool-Amp where it stood, with no replacement part, then re-scanned.

Read the case study

From the people who use it

Customer reviews · cool-amp.com

“I have been using Cool-Amp to protect resistance welder connections from oxidation since I was the Welding Engineer at Chevy Gear & Axle in 1976. It is now specified by most automotive customers for all the secondary welder connections.”

Automotive resistance welding specialist Cool-Amp · Welder secondaries
“Saving contacts that have burned… put the lube on the blades & reconnected the circuit… saved myself a lot of money.”
Conducto-Lube · Switch blades
“I was going to set up a plating bath. I didn't have to do that.”
Cool-Amp
“Eliminates chloride salt build up at contact points. Conducto-Lube protects the contacts from vapors.”
Conducto-Lube · Corrosive environment
“Application can't be easier… I have tried tin plate and solder plate circuit boards but neither are as good as or easy as Cool-Amp.”
Cool-Amp · PCBs

Buying for a utility, agency or plant?

Reach out to request a quote or pay by purchase order. We are happy to work with you on bulk orders. 

Cool-Amp · NSN 6850-00-561-0394
Conducto-Lube · NSN 9150-00-128-7200

Invented on the job by a lineman. Started in a family basement in 1944. Still made in Lake Oswego, Oregon. Our story →