Seal Compression (Squeeze)

O-ring compression is a result of three factors: the force applied to compress the seal, durometer, and cross section. These relationships are demonstrated in Illustration 5.3. Additionally, O-ring stretch affects seal compression by reducing cross section, which reduces the sealing potential of the O-ring. This relationship is demonstrated in the equation below.

(Reduced O-Ring CS)

Note: Approximation

   

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