Circular Pressure Window Calculator
Estimate indicative thickness for flat circular optical windows under pressure differential for subsea, vacuum and custom applications.
Use this calculator to estimate the required thickness of a flat rectangular pressure window based on width, height, pressure differential, material, safety factor and edge support condition. This tool is intended for early-stage design and lead qualification. Final design suitability depends on support method, edge finish, proof testing, safety requirements and application conditions.
Indicative thickness only
The calculated value is intended as an initial estimate and should not be treated as a final design approval.
Edge support affects performance
The way a circular pressure window is mounted can significantly affect stress distribution and required thickness. A clamped window will usually behave differently from a simply supported window.
Final design may require more thickness
Manufacturing tolerances, proof testing, coating requirements, thermal effects, edge quality and safety margins can all increase the final recommended thickness.
Common Materials for Circular Pressure Windows
Material selection depends on optical transmission, mechanical strength, environmental conditions and coating requirements.
Frequently Asked Questions
Calculator results are indicative only and do not constitute certified design approval. Final suitability depends on mechanical design, material data, mounting method, safety requirements and application environment.