Sealing Form and Failure Mechanism of Deep In Situ Rock Core Pressure-Maintaining Controller

Table 1

Sealing parameters of the pressure-maintaining controller.

Parameter	Numerical value	Variable
		O-ring radius
		Seal groove depth
		Seal groove width
		Seat diameter
		Elastic modulus of O-ring
	12	Shear strength of O-ring
	15°	Angle of sealing surface