Water filter cartridge and manifold head seal

A water filter cartridge has a cap with radially oriented first and second (either inlet or outlet) flow channels on first and second generally cylindrical portions. First and second seals encircle the first flow channel on the first portion and third and fourth seals encircle the second flow channel on the second portion. The second and third seals form a void volume during use which may be accessed by a vent path to eliminate moisture or to test for or indicate leaks. The radial flow paths reduce axial, push out forces on the filter cartridge and allow smaller locking tabs to be used. The first seal forms a top void volume during use which may be accessed by a vent path to eliminate moisture or to test for or indicate leaks. 水过滤筒具有盖，该盖在第大致圆筒形部分和第二大致圆筒形部分上具有径向取向的第和第二(入口或出口)流动沟道。第密封件和第二密封件环绕第部分上的第流动沟道，并且第三密封件和第四密封件环绕第二部分上的第二流动沟道。第二密封件和第三密封件在使用期间形成空隙体积，该空隙体积可以通过通风路径被访问，以消除水分或测试或指示泄漏。径向流动路径减小了过滤筒上的轴向推出力，并允许使用更小的锁定突片。第密封件在使用期间形成顶部空隙体积，该空隙体积可以通过通风路径被访问，以消除水分或测试或指示泄漏。