Dear Khun Suwan,
Kindly note that I am going to order the seals NBR+PTFE GASKET / PTFEC-300 - 3" rubber and Teflon 10.00 pcs each of Bht.420.00.
5 units will be using with the IBC and 5 units will be delivering to ESSSO as a spare.
For which please kindly approve.