BUCHI Syncor Polyvap - Manual (Page 53)

Syncore ® Accessories
version E 51
Resistance of FPM
A: Very good resistance: FPM may be used without rest-
rictions
B: Moderate resistance: Sealing made of FPM may swell.
Sealings may generally be used, but may under some
circumstances have to be replaced after being used
several times.
C: Poor resistance: Sealing deform. The sealings of FPM
should be used only to a limited extent. We recommend
that the sealings be tested beforehand (softening or
wetting the sealing discs).
D: Very poor resistance: Sealing deform. The sealing of
FPM should not be used.
Solvent Resistance
Acetaldehyde D
Acetone D
Benzene B
Butanol A
Chloroform B
Diethyl ether D
Dimethylformamide C
Dimethylbenzene (Xylol) A
Dioxane C
Acetic acid D
Acetic acid anhydride D
Ethanol B
Ethyl acetate D
Hexane A
Isobutanol A
Isopropanol A
Methanol A
Methylene chloride C
Nitrobenzene B
Phenol A
Propanol A
Sulphuric acid, fuming A
Carbon tetrachloride A
Tetrahydrofurane D
Toluene A
Triethylamine B
Trichloroacetic acid C
Trichloroethane A
Trifluoroacetic acid D
Vinylidene chloride (Dichloroethylene) B
Aqueous hydrogen bromide, saturated A
Aqueous hydrogen chloride, saturated B
Aqueous ammonia solution C
Aqueous caustic soda B
Aqueous nitric acid B
Table 7: Resistance of the FPM sealings
5 Appendix