A portable computing device, including a latch apparatus and system, may include a rotatable high wear plastic oversnapping arm, a pivot portion on the portable computing device, and an enclosure door with a geometric mating feature. The oversnapping arm may be configured to rotate 90.degree. about the pivot portion to snap over the geometric mating feature and secure the enclosure door in a closed, latched position. As the oversnapping arm is rotated downward, its progress may be frictionally impeded by the geometric mating feature. Applying downward pressure on the oversnapping arm towards the physical interference may cause the oversnapping arm to bend over the interfering feature and snap into a closed, geometrically interlocked position. In the closed, latched position, the oversnapping arm may apply a positive pressure against the enclosure door. The positive pressure on the enclosure door increases the environmental sealing capabilities by putting additional pressure on the existing environmental seal.