FEP and FPA SEALING RINGS
material
FEP
FPA
application characteristics
EPDM
- 54 ° to + 150 ° C
- 54 ° to + 150 ° C
good weather and ozone resistance - excellent resistance to water and steam - good chemical resistance to organic and inorganic acids and polarized alkalis such as alcohols, ketones and esters
Silicone / VMQ
- 60 ° to + 205 ° C
- 60 ° to + 205 ° C
low compression settings - good heat resistance, low temperatures - moderate alkali resistance - good weather and ozone resistance
Viton / FKM
- 26 ° to + 205 ° C
- 26 ° to + 205 ° C
low compression at elevated temperatures - good weather, ozone and aging resistance, - high temperature resistance - good for wide application in oils and solvents, such as aliphatic, aromatic and halogen hydrocarbons, vegetable oils, acids
FEP - transparent - max. 204 ° C - excellent chemical and corrosion resistance - does not absorb moisture - excellent elasticity - smooth / self-lubricating surface - FDA compliant - USP Class VI approved
PFA - transparent / light blue - max. 260 ° C - excellent thermal and chemical resistance - better resistance to cracking and stress than FEP - extremely smooth surface - low vapor saturation - FDA compliant - USP Class VI approved
Possibilities of choosing rubber cores depending on the operating parameters, wall thickness from 0.25 to 1.14 mm depending on the cross section.
