O-Ring Size Finder
O-ring engineering calculator

O-Ring Groove Design Check

Select an AS568 size to preload its nominal dimensions, choose the application type, and check your actual groove geometry.

Engineering tool

O-Ring Groove Design Check

Select an AS568 size, choose the application type, then enter your actual groove dimensions. The tool calculates geometry checks; it does not prescribe a universal groove design.

Engineering caution: This tool is a preliminary geometry check. It does not calculate a standard-compliant housing recommendation. Suitable squeeze, fill, stretch, clearance and groove dimensions depend on seal type, pressure, temperature, material, hardness, tolerances, extrusion gap and groove geometry. Verify production designs against the applicable standard or manufacturer design data.

What this tool checks

It calculates nominal squeeze from cross-section and groove depth, a simplified cross-section fill estimate, and installation stretch when the O-ring ID and groove mean diameter are provided.

Why application matters

Static radial, dynamic radial and face-seal applications do not share one universal groove design. Pressure, motion, tolerances, material and clearance can change the design limits.

Why stretch matters

Installation stretch can reduce the effective squeeze diameter. Parker's handbook specifically notes that designs using more than about 2–3% stretch should account for that effect when determining gland depth.

Engineering reference

Parker's O-Ring Handbook provides detailed static and dynamic gland-design tables and explains that suitable squeeze is a compromise among leakage, friction, wear, temperature, pressure and material factors.

Trelleborg's O-Ring Calculator likewise distinguishes application types and applies different limits according to the selected application and ISO 3601 design framework.

Parker O-Ring Handbook (ORD 5700) · Trelleborg O-Ring Calculator

This website is a reference and screening tool, not a substitute for a standard, manufacturer design table or engineering validation.