A canister of high-viscosity hydraulic fluid, essential for maintaining the functionality of heavy machinery and doors within the USG Ishimura. The canister is cylindrical, made of durable metal with a slightly worn and scratched surface, indicating frequent use. It features a secure, screw-top lid with a pressure valve, and the fluid inside is a dark, oily substance that subtly reflects light, giving it a slick appearance. Warning labels and usage instructions are printed in faded, utilitarian fonts on the side.