6" 910-FA Upgrade Kit with neoprene gaskets to change 910-F, rated at150 psig (10.3 Bar), to 910-FA, rated at 285 psig @100F (19.7 Bar @ 38C).  

Kit includes replacement glass, gaskets, retainers, bolts, nuts, and faceplate with revised rating information.  Rating based on carbon steel body.
Glass:  Tempered borosilicate (2 pcs)
Seal Gasket:  Neoprene (2 pcs)
Cushion Gasket:  Fiber (2 pcs)
Retainer:  Carbon steel (2 pcs)
Fasteners:  Alloy Steel (4 pcs each, bolts and nuts)
Maximum Pressure:  285 psig @ 100 F (10.3 Bar @ 38 C)
Maximum temperature:  250 F (121 C)