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OEM Diaphragm Buna-N Repair Kit Parts for 1 Inch Yamada Pump K25-MN-1

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Image: Diaphragm Repair Parts Kit for 1 inch Yamada Pump part number K25-MN-1
SKU: YP-K25-MN-1
OEM 1" Yamada Pump Buna-N Repair Kit
List price: $314
Free Shipping to lower US 48
In Stock
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Quick Overview: 
  • OEM repair kit for NDP-25BAN Yamada Pump
  • Includes Diaphragms, Ball Valves and O-Rings
  • Made from Buna N Materials


This Repair Kit is an OEM part from Yamada that will fit our 1" Yamada Diaphragm Pump and includes replacement diaphragms, balls and O-Rings.

We only sell the Buna-N materials of this replacement kit which is a great material for the sealcoating industry because it holds up well to coal tar, asphalt emulsions and most importantly aggregates like sand.


We sell the "Buna-N" material in this replacement kit which we've found to do a great job with asphalt emulsion and coal tar sealers, and the Buna N holds up great with sealers that have abbrasives.

Yamada NDP-25BA Teardown Video


  • 2 x Diaphragm 25N-PP (772962)

  • 2 x O-Ring (640134)

  • 4 x O-Ring (640044)

  • 4 x Ball 25N (770581)

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Shipping Weight
Weight: 3 lb
Shipping Dimensions
Dimensions: 8 in × 8 in × 8 in