The B01 profile represents a high-performance, single-acting non-metallic backup ring (also known as an anti-extrusion ring) designed to protect elastomeric sealing elements from structural damage in both static and dynamic linear applications. It features a solid, precision-machined rectangular cross-section that maximizes volumetric groove fill behind the primary seal. While it provides no independent fluid sealing function, the B01 profile acts as a rigid sacrificial structural barrier that fills the mechanical clearance gap, preventing the primary seal from extruding or nibbling under high operating pressures.

The solid backup body (shown in teal) is precision-machined from advanced high-modulus engineering plastics, most commonly Virgin Polytetrafluoroethylene (PTFE), carbon-filled or bronze-filled PTFE compounds, Polyoxymethylene (POM), or high-strength Thermoplastic Polyurethane (TPU). The selected compound provides exceptional shear resistance, high compressive strength, and minimal cold flow tendencies under intense load. It operates reliably within a wide temperature spectrum from -50°C to +135°C (up to +200°C when utilizing high-spec fluoropolymer variants) and demonstrates complete chemical compatibility with standard mineral hydraulic oils, synthetic lubricants, water-glycol fluids, and aggressive process chemicals.

The flat rectangular configuration provides an unyielding mechanical support wall that bridges the hardware clearance gap directly behind the primary seal’s low-pressure side. By providing a clean, flat backing surface, the B01 profile ensures uniform distribution of pre-load forces across the main seal body, completely eliminating localized stress concentrations and micro-shaving failures. Its robust structural cross-section elevates the pressure handling capacity of standard elastomeric seals up to 50 MPa or higher, significantly extending seal life in systems characterized by large clearance gaps, severe pressure spikes, or high-frequency pressure reversals.

The B01 rectangular backup ring is universally utilized across heavy-duty industrial, mobile hydraulic, and high-pressure fluid handling infrastructure where high system pressure or extreme clearances pose an extrusion risk. It is standardly equipped in high-pressure SAE hydraulic flanges, multi-stage control valve manifolds, heavy-duty agricultural implements, and high-load hydraulic cylinder piston or rod glands. Additionally, its superior anti-extrusion efficiency and low-friction wear properties make it the ideal selection for chemical processing metering pumps, high-pressure industrial pipe fittings, injection molding machines, and subsea oil and gas control valves.