In reply to shankar_logic:
If it is fixed delay, parameterized sequence can be used.
class test_seq#(parameter int DELAY= 10) extends uvm_sequence
#DELAY ... //Update this parameter from test while creating sequence
If it is variable delay, it can be done as -
class test_seq extends uvm_sequence
rand time DELAY; //Assign this value from test as test_seq.DELAY = 10ns
#DELAY ... //It will be randomized once sequence randomization is called