### Instruction:

Extract the cause and effect entities from the following sentence:
Elastomers shall not have a corrosive effect on other materials when exposed to conditions normally encountered in service

### Assistant:

CONDITION: have a corrosive effect on other materials
KEYWORD: when
VARIABLE: Elastomers
NEGATION: shall not
EFFECT_1: Elastomers shall not have a corrosive effect on other materials
CAUSE_1: exposed to conditions normally encountered in service

