10PCS/lot O-Rings Seals Black Fluorine Rubber Ring FKM CS 3.1mm OD10/11/12/13/14/15/16/17/18/19/20mm wear Resistant Oil Gaskets(OD20xCS3.1mm)

Material: Made of high quality steel and rubber to ensure maximum reliability and performance. Durable and long lasting. Rust and corrosion resistance.
Part Type:cylinder rebuild seal kit
Function:When the Hydraulic Cylinder is leaking, it is time to check if the inside seal was crank or damaged. To rebuild your Hydraulic Cylinder Gland and Piston , you will need this cylinder seal kit.
Easy to install:This kit usually takes less than an hour to install and can be done with a vice, pipe wrench and a few hand tools.
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