Pack beans into 4 hot 1-pint jars to within 1/2 in. of the top. Add cayenne, garlic and dill seed to jars., In a large saucepan, bring water, vinegar and salt to a boil., Carefully ladle hot liquid over beans, leaving 1/2-in. headspace. Remove air bubbles and adjust headspace, if necessary, by adding hot mixture. Wipe rims. Center lids on jars; screw on bands until fingertip tight., Place jars into canner with simmering water, ensuring that they are completely covered with water. Bring to a boil; process for 10 minutes. Remove jars and cool.