Seal for positive and negative pressure floor drain

Abstract

1. The name of the design product: sealing element of positive and negative pressure floor drain. 2. The use of the design product: the product is used for sealing element of positive and negative pressure floor drain cooperating with opening and closing valve plate. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: perspective view. 5. Other circumstances that need to be explained: the sectional view is the sectional view of the front view.

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