1. What is the O-Ring Size Equation?

The O-Ring Size Equation calculates the squeeze percentage of an o-ring based on its cross-section diameter and gland depth. This helps determine the proper compression for effective sealing.

2. How Does the Calculator Work?

The calculator uses the O-Ring Size equation:

Where:

• \( S \) — O-Ring Size (unitless)
• \( CS \) — Cross-section diameter (mm)
• \( GD \) — Gland depth (mm)

Explanation: The equation calculates the compression percentage of the o-ring by comparing the difference between cross-section diameter and gland depth relative to the cross-section diameter.

3. Importance of O-Ring Size Calculation

Details: Proper o-ring compression is crucial for creating effective seals in various applications. Too little compression may cause leaks, while too much compression can damage the o-ring and reduce its lifespan.

4. Using the Calculator

Tips: Enter cross-section diameter and gland depth in millimeters. Both values must be positive numbers, with cross-section diameter greater than zero.

5. Frequently Asked Questions (FAQ)

Q1: What is the ideal o-ring compression percentage?
A: Typically, 15-30% compression is recommended for static seals, though this may vary based on material and application.

Q2: Can this calculator be used for dynamic seals?
A: While the basic calculation is similar, dynamic seals often require different compression percentages and additional considerations for movement and wear.

Q3: What units should I use for measurements?
A: The calculator uses millimeters (mm) for both cross-section diameter and gland depth measurements.

Q4: How accurate should my measurements be?
A: For best results, measurements should be precise to at least 0.1mm, as small variations can significantly affect the compression percentage.

Q5: What if my calculated compression is outside the recommended range?
A: You may need to select a different o-ring size or adjust the gland design to achieve proper compression for effective sealing.