MS PTFEPP Lined Spacers Size: 25 NB TO 300 NB. Outer Body ASTM A 106 Grade B Flanges ASTM A 105IS 2062 Temperature: FEP-Max 180 Degree Celsius. PFA Max: 200 Degree Celsius. PP Max: 100 Degree Celsius. Flange Connection: ANSI B 16.5. Face to Face: ANSI B 16.10. Spark Testing of PFAFEPPP at 15 KVA. Hydro Test at 29.8 kgcm2.