Back-up Ring Type BH / rectangular, cut is a high-performance support ring designed to prevent seal extrusion in high-pressure applications. Featuring a rectangular cross-section and a cut design, it allows easy installation without stretching. Used with O-Rings in static and dynamic systems, Type BH enhances sealing reliability, resists deformation, and extends service life in demanding hydraulic and pneumatic environments. This is a Custom Article Number with a Customer Specific Design.