A seal in an electrochemical fuel cell prevents fluid in a space from leaking. The seal includes a first layer and a second layer having different coefficients of elasticity. The seal is made of rubber. An electrochemical fuel cell includes an electrolyte membrane, a first electrode on one side of the...http://www.google.com.au/patents/US6440597?utm_source=gb-gplus-sharePatent US6440597 - Seal and fuel cell with the seal
