ACM
Polyacrylate Rubber
Glass Transition (Tg)
-30 to -15 °C
Melting Point (Tm)
—
Density
1.10 g/cm³
CAS Number
9003-01-4
Recycling Code
None
Category
Elastomer
Repeat Unit
–[CH₂–CH(CO–O–C₄H₉)]ₙ–
The repeating unit is the smallest structural fragment whose repetition builds the whole chain. Subscripts show the relative share of each unit in copolymers.
Key Properties
Better hot-oil and oxidation resistance than NBR; poor water resistance and low-temperature flexibility.
Applications
Transmission seals, engine gaskets, hot-oil O-rings.