Is this a Silicone based lube?

It is NOT silicone based. If your concern is whether or not this will damage the rubber bushings and seals, it definitely will. It is for metal to metal applications only and will cause rubber bushings swell. Instead, use Permatex 80653 silicone extreme brake parts lubricant.

Is it used to grease the caliper bolts?

Yes clean off the bolt, grease it and slide it back into the rubber boot.

Will this work on ford rubber seals? just applied to my mustang and wondering if i should get something else?

Absolutely agree with R J's answer. Look at the specs and contents of the product. This product is not grease and has a high viscosity like gear oil. The touch and feel is similar to silicone, if you take a drop of it on your finger and rub it, the finger surfaces are absolutely dry just like a silicone test, which also tells you there is nothing oil-based component in it. Not sure at this time if it is any better than good old silicone that I've been using on my same trucks for last 20 years. BTW, I apply some of it on my new tools I buy and also for lubrication of O-rings since its safe for rubber and plastics. It is green in color and has no smell which I prefer.

Why should not I use copper base anti-seize lube and use this? Please advice. Thank you

Copper anti seize doesn't move that well and can actually cause the pins to jam due to the large copper particulates. Use some type of grease. I learned this the hard way

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🛠️ Keep your brakes cool, quiet, and unstoppable with Permatex Ultra Lube!

CORROSION SHIELD - Protects critical brake components from rust and wear, extending pad life.
SYNTHETIC POWERHOUSE - Non-melting, green synthetic formula designed for extreme brake conditions.
PRECISION APPLICATION - 0.5 oz bottle engineered for targeted lubrication on caliper pins, sleeves, bushings, and pistons.
SILENT RIDE GUARANTEE - Reduces brake noise by keeping caliper pins and pistons perfectly lubricated.
UNMATCHED HEAT RESISTANCE - Performs flawlessly up to 500°F, ensuring your brakes stay smooth under pressure.

Permatex 85188 Ultra Disc Brake Caliper Lube is a high-performance, green synthetic lubricant designed to withstand extreme temperatures up to 500°F. It ensures long-lasting lubrication and corrosion protection for caliper pins, sleeves, bushings, and pistons, reducing brake noise and extending brake pad life in the harshest conditions.

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Material	Synthetic
Brand	Permatex
Package Information	Bottle
Liquid Volume	0.5 Fluid Ounces
Item Weight	0.01 Kilograms
Recommended Uses For Product	Lube
Upper Temperature Rating	500 Degrees Fahrenheit
Flash Point	260 Degrees Celsius
Specific Uses For Product	Lubrication of Brake Components, Brake Noise Reduction, Corrosion Prevention, Long-lasting Performance
Item Form	Liquid, Grease
Global Trade Identification Number	00686226851888
Manufacturer	Permatex
UPC	686226851888
Number of Items	1
Model	85188
Item model number	85188
Manufacturer Part Number	85188
OEM Part Number	85188
Colour	_
Assembly Required	No
Item Weight	10 g

Permatex 85188 Ultra Disc Brake Caliper Lube, 0.5 oz.

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