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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Permatex 85188 Ultra Disc Brake Caliper Lube, 0.5 oz.

Product ID: 3852915

Details

Brand
Permatex
Item Weight
0.01 Kilograms
Liquid Volume
0.5 Fluid
Material
Synthetic
Package Information
Bottle

🔥Withstands up to 500°F

🟢Green synthetic formula

⚙️High viscosity for lasting lubrication

R254

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Description

🛠️ Keep your brakes cool and your ride smoother than ever

TRUSTED BY PROS - Ranked #4 in Automotive Caliper Greases with 4.7-star reviews—join the elite maintenance crew
SYNTHETIC STRENGTH - Non-melting, green synthetic formula engineered for harsh brake conditions
ENDURES EXTREME HEAT - Keeps caliper components slick up to 500°F for peak performance
PRECISION PROTECTION - Targets caliper pins, sleeves, bushings, and pistons for full-spectrum lubrication
LONG LASTING RELIABILITY - Maintains lubrication throughout the entire brake pad life cycle—no reapplication FOMO

Permatex 85188 Ultra Disc Brake Caliper Lube is a high-viscosity, green synthetic lubricant designed to withstand extreme temperatures up to 500°F. It ensures critical brake caliper components like pins, sleeves, bushings, and pistons remain lubricated throughout the brake pad’s lifespan, delivering reliable, long-lasting performance favored by professionals and fleet maintenance experts.

Specifications

ASIN	B004WJPN2A
Best Sellers Rank	#5,504 in Automotive ( See Top 100 in Automotive ) #4 in Automotive Caliper Greases
Brand Name	Permatex
Container Type	Bottle
Customer Reviews	4.7 4.7 out of 5 stars (3,050)
Flash Point	260 Degrees Celsius
Global Trade Identification Number	00686226851888
Included Components	Item
Item Form	Liquid, Grease
Item Type Name	Ultra Disc Brake Caliper Lubricant
Item Weight	0.01 Kilograms
Liquid Volume	0.5 Fluid Ounces
Manufacturer	Permatex
Material	Synthetic
Model Number	85188
Number of Items	1
Part Number	85188
Recommended Uses For Product	Fleet and plant maintenance.
SAE J300 Viscosity Grade	20W
Specific Uses For Product	Fleet and plant maintenance.
UPC	686226851888
Upper Temperature Rating	500 Degrees Fahrenheit
Viscosity	High
Viscosity Level	High

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R254

Duties & taxes included

In stock

Sold byAmazon South AfricaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to South Africa.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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