Master cylinder, cap, dust seal.

总泵，帽，防尘密封。

Maintain light and dust seal at a minimum of 50% compression.

至少可以压缩到50%还可以保持轻度以及防尘。

Due to shell has good dust seal to guarantee whole body anti explosion and to strengthen safety of coal feeder.

由于壳体的防尘密封，确保了整体防爆性，增强了给料机的安全性。

The concrete can be used to dust, damp sponge rails and grooves on clean with a dry sponge, once more, to keep clean seal.

具体可以先用干净的湿海绵拭擦滑轨、沟槽上的灰尘，再用干海绵擦拭多一次，以保持密封圈的清洁。

If the wall is not dry, dust is not clean, the release of water vapor from the wall and seal failure.

若墙体未枯燥、尘埃未铲除洁净，墙体释放出的水蒸气及会使密封失效。