Precision-machined groove in weir plates and nozzle bodies designed to securely hold O-rings or sealing gaskets for fluid containment.
A precisely engineered recess or channel machined into the mating surfaces of weir plates and nozzle bodies in industrial equipment. This groove provides a controlled compression zone for elastomeric O-rings or flat gaskets, creating a reliable static seal that prevents fluid leakage between connected components under varying pressure and temperature conditions.
诱因 → 失效模式 → 工程缓解
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Typically 15-30% compression for static seals, depending on material and application. Higher compression provides better sealing but increases friction and potential for extrusion.
Use backup rings, reduce clearance gaps, select harder elastomers, or design with stepped or dovetail groove geometries that mechanically restrain the seal.
32-125 μin Ra (0.8-3.2 μm) is typical. Too smooth can cause adhesion; too rough allows leakage paths. Directional polishing should follow fluid flow direction.
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