Project title: A Mixed-Elastohydrodynamic Lubrication Model of a Capped-T-ring Seal with a Sectioned Multi-Material Film Thickness in Landing Gear Shock Absorber Applications General information Title of dataset: T-ring pressures Date and location of data collection: Data was collected from January to September 2024 in Cranfield, Bedfordshire, UK. Institution: Cranfield University. Data collector: Aaron Feria Alanis, Researcher. Supervision: Ahmed Al-Faisel Sheikh Al-Shabab, Researcher. Supervision: Martin Skote, Researcher. Keywords: Fluid film thickness, fluid pressure, asperity contact pressure, static contact pressure, flow rate, pressure balance, sealed pressure, piston velocity, gamma values. Funding source: This work was conducted under the ATI/Innovate UK (Grant No. 263261) Project: Future Landing Gear 2, with Airbus UK as Industrial Lead. The authors also acknowledge funding from EPSRC (Grant No. 2625870). Methodological information The data was obtained through computational simulations of a capped T-ring seal operating under various conditions. The approach involved numerical methods coupled with Finite Element Analysis in a fluid-solid interaction framework. A total of 55 simulations were conducted, producing key outputs such as static contact pressure, asperity contact pressure, fluid film pressure, fluid film thickness, dimensionless flow rate (broken down into its pressure, velocity, and sliding components), and the pressure balance. File name, structure, and file format Name of file: T_ring_pressures Attributes: The file includes the numerical results of 55 cases analysed in the paper. Each case consists of 10 columns containing the information regarding the fluid film thickness, fluid pressure, asperity contact pressure, static contact pressure, flow rate, and pressure balance File format: XML, CVS