NAPA used to sell Walker jacks, check with them.
Hydraulic jacks are always made of steel. No other material would be able to take such internal pressure
If we consider the friction or screw jacks used to lift a vehicle to change a flat, almost all of those are made entirely of metal (steel). In the case of hydraulic jacks, they are made largely of steel, and have rubber for seals and hydraulic fluid to provide the media to perform the hydraulic work.
Hydraulic jacks are typically made from a combination of materials including steel for the main frame and components, which provides strength and durability. The hydraulic cylinder is often made of high-strength steel or aluminum to withstand high pressure. Seals and gaskets are usually made from rubber or various synthetic materials to ensure leak-proof operation. Additionally, some jacks may have plastic or rubber components for grips and non-slip surfaces.
Montgomery Ward floor jacks were manufactured by various companies over the years, as the retailer did not produce them in-house. The jacks were often sourced from different manufacturers and sold under the Montgomery Ward brand. Some well-known manufacturers that produced similar jacks for retailers included companies like Walker and others in the automotive supply industry.
Madam Walker did not make the straightening comb. It existed in the 1870s when she still was a child. She was born in 1867.
synthetic hydraulic fluid made for phosphate-ester base
Pressure by the hydraulic pump is made​​.
Pop corn and peanuts.
balls
not all !
The Jaws of Life are made of metal and use a hydraulic system. The official name is "Hydraulic Rescue Tool".
Hydraulic.