Crown Engineering 45681 Pump Strainer with O-ring Gasket

Product Description

The CROWN ENGINEERING 45681 is a replacement pump strainer assembly designed for particulate filtration in oil burner fuel systems. The unit combines a stainless steel mesh filter element with molded nylon ends, providing structural rigidity and dimensional stability under continuous fuel exposure. An oil-resistant O-ring is integrated into the assembly to deliver a leak-tight seal on installation. A cork gasket is also included to seal the pump housing interface. This strainer helps prevent contaminants from reaching internal pump components, supporting consistent burner operation and extending pump service life. It is a direct replacement part suited for licensed oil burner technicians performing routine maintenance or pump service.

The 45681 is built for use in residential and light commercial oil burner systems where Suntec fuel unit pumps are installed. Compatible models include Suntec F3 through F20 and R35 series pumps. The strainer fits inline within the fuel supply circuit and is typically serviced during annual burner tune-ups or whenever fuel contamination or flow restriction is suspected. Its compact dimensions make it practical to replace without major disassembly of the burner assembly.

Key Features

• Stainless steel mesh filter element resists corrosion in fuel oil environments
• Molded nylon ends provide strength and dimensional stability
• Oil-resistant O-ring included for a leak-tight pump seal
• Cork gasket included for pump housing interface sealing
• Compact form factor fits within standard oil burner fuel circuits
• Direct OEM-style replacement for listed Suntec pump models

Compatibility

Compatible with Suntec F3 through F20 and R35 model fuel unit pumps as stated by the manufacturer.

Installation Notes

Installation should be performed by a licensed oil burner technician in accordance with applicable local codes and NFPA 31 guidelines. Shut off fuel supply and de-energize the burner before beginning strainer replacement. Inspect the O-ring and cork gasket seating surfaces for debris or damage before assembly. Do not overtighten the strainer housing, as nylon components can deform under excessive force.