Elastomer rhymes with:
customer, customer, latimer, lattimer, astronomer, bancomer, bessemer, beumer, bodamer, bodenhamer, burkhammer, cathmor, chrismer, customer, derhammer, goldammer, gossamer, grismer, isomer, jasmer, jesmer, kasmer, kennamer, latecomer, latimer, lattimer, machamer, merksamer, monomer, osmer, polymer, ruchlamer, schellhammer, shelhamer, tesmer, wasmer, wismer, ziesmer