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https://www.efunda.com/designstandards/oring/oring_chemical.cfm?SM=none&SC=Tetrachloroethane eFunda: O-Ring Materials Compatibile with Chemical Tetrachloroethane Chemical compatibility database selector for o-rings materials. o ring materials compatibile chemical tetrachloroethane https://www.cdc.gov/niosh/npg/npgd0597.html CDC - NIOSH Pocket Guide to Chemical Hazards - 1,1,1,2-Tetrachloroethane Yellowish-red liquid. niosh pocket guide chemical hazards 1 2 cdc tetrachloroethane