Dunham Bush Replacement Seals In Stock

Dunham Bush mechanical seal is a device that helps join systems or mechanisms together by preventing leakage (e.g. in a plumbing system), containing pressure, or excluding contamination. The effectiveness of a seal is dependent on adhesion in the case of sealants and compression in the case of gaskets.


Almost everywhere where pumps with rotating shafts are used, a shaft seal is involved. The shaft seal forms a barrier between what is inside the pump and the atmosphere.


Seal performance greatly influences pump performance. When functioning correctly, the seal remains unnoticed. As soon as it starts to leak, however, significant problems can arise, either with the pump or the surrounding environment. The importance of the shaft seal must never be underestimated during pump design, operation, or maintenance.

Part # Dunham Bush Seal Part # Shaft Size (inches)  
632 996 (OLD) 1/2" Add to RFQ
106 996 (NEW) 1/2" Add to RFQ
118 5/8" Add to RFQ
508 614 5/8" Add to RFQ
633 472 5/8" Add to RFQ
487 3/4" Add to RFQ
60740 124820 (OLD) 3/4" Add to RFQ
107125 124820 (NEW 1" Add to RFQ
499 GA-1781-4 1" Add to RFQ
236 1" Add to RFQ
236-21 860 1" Add to RFQ
159 GA-1781-1 1" Add to RFQ
355 861 1-1/8" Add to RFQ
384-21 861 1-1/8" Add to RFQ
756 3179 1-1/4' Add to RFQ