in connection with an embodiment is included in at least one embodiment of the subject matter disclosed thus the appearance of the phrases u201c in one embodiment u201d or u201c in an embodiment u201d in various places throughout the specification is not necessarily referring to the same embodiment further the particular features structures or characteristics may be combined in any suitable manner in one or more embodiments fig4 illustrates a cross section across a removable device 200 according to an exemplary embodiment the device 200 includes a rigid portion 210 and an o ring 220 seal the rigid portion 210 is made of a material similar with the material of a receiver plate in which the device is inserted e g stainless steel the o ring 220 seal is made of a rubber like material e g an elastomer in a non limiting embodiment the removable device 200 has a diameter d of about 1 u2033 and a length l of about 1 5 u2033 the o ring seal 220 illustrated in fig4 is not intended to be limiting relative to the useable types of seals seals having other types of seals than the o type may be used to prevent a fluid leak between the receiver plate and the removable device 200 the rigid portion 210 has a tubular shape with a channel 212 substantially in the middle when the lmrp and the lower bop stack are attached to each other fluid from the mux pod may circulate through the channel 212 towards devices in the bop.