Our fluoropolymer-booted insert holder is used in applications where aggressive corrosives are present. A solid PFA insert is pressed into the inner diameter of the holder. When used with rupture discs with fluoropolymer liners attached to the process side, only fluoropolymer is in contact with the media. The PFA insert can be used with the OPR/OPK holder and with FRDI and PRDI non-torque-sensitive holders.