K-mini  K-100  K-200

K-mini K-100 K-200

K-100 K-200 K-Mini O-rings

These pumps use 3 O-rings. The Larger 2.5" diameter o-ring (part # 6331) goes on the plunger end and creates the air seal. This o-ring requires light lubrication. The other 2 o-rings are the same size/part number. These 2" diameter o-rings (part # 6326) act as cushions and are located on the plunger shaft. One can be seen from the outside of the pump and act as a bumper on the down-stroke and the other is inside the pump and acts as a bumper on the up-stroke.

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Regular price $3.50
Sale price $3.50
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Unit price
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2.5" replacement o-ring
Regular price $3.00
Sale price $3.00
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2.0" replacement o-ring.