P169984 HYDRAULIC HEAD ASSY ASSEMBLY Part Number: P169984 Replaces Part Number: R55632D1 Manufacturer: DONALDSON Description: HEAD ASSY DONALDSON REPLACEMENT FOR P & H R55632D1 DURAMAX HMK25 HEAD ASSY HMK25 head assy 1-1/2" flange ports no bypass 25 psi visual indicators both sides DONALDSON HMK05 (single) and HMK25 (double) Duramax spin-on filters are perfect for high-flow applications, featuring a heavy-duty steel body and die-cast top plate for added strength. A special head-to-canister O-Ring seal prevents leakage. Buna-N® seals are standard. Viton® seals made of fluorocarbon are available. Since both HMK05 and HMK25 models use the same replacement filters, they make a great team within your application. Both filters feature identical pressure ratings, but the HMK25 double filter head means double flow capability, with two filters to hold more contaminant. So there’s no need to inventory two different part numbers for replacement filters. Take advantage of Donaldson’s mix and match system of in-stock heads, housings and media choices – so you can get exactly what you need. Media options include wire mesh and Donaldson’s exclusive Synteq™ synthetic media designed especially for liquid filtration.