O-ring seal and compression ratio

Value of the compression ratio of the O-ring seal on the cross-section diameter compression ratio for different seal occasions as follows:
General static seal compression rate: 10 "- '30%;
Low friction with the compression rate: 1.5 to 6%;
High pressure, reciprocating compression rate: 16%;
Hydraulic seal compression rate: 10 "--- 20%;
Vacuum-sealed compression rate: 40 "- 45%;
Cryogenic low temperature compression rate: 70 ~ 85% (to overcome the contraction of the volume of rubber in the two transition temperatures).