Description

When your hydraulic system starts losing pressure or you’re hearing that tell-tale whine from the pump, one of the first places to check is the standpipe O-ring. This little ring sits inside your hydraulic pump and seals the critical 4000-4600 pressure line. If it’s cracked or worn, it’ll let pressurized oil leak internally, robbing your system of the pressure you need for loader work and three-point operation.

What You’re Getting

Quality O-ring designed specifically for Ford New Holland hydraulic pump standpipes
Proper seal material that handles high hydraulic pressures and temperature cycling
Part of comprehensive hydraulic pump service kit 404607 for complete system maintenance
Sold in 5-pack so you’ll have spares for future service or multiple machines

Built for Real Farm Work

This O-ring fits the hydraulic pumps on Ford 40 Series tractors and New Holland TS Series models that put in long days running loaders, operating three-point implements, and powering steering systems. These are the workhorses handling everything from feeding cattle to running hay equipment, and they need hydraulic systems that work when you need them.

Made to Last

Farm hydraulic systems see extreme pressure swings and temperature changes from cold morning startups to hot afternoon fieldwork. This O-ring is made from materials that stay flexible through temperature cycles and maintain their seal even under full system pressure.

Installation Notes

You’ll need to drain the hydraulic system and remove the pump to access this O-ring, so it’s smart to do this work as part of a complete pump service. Clean the groove thoroughly before installing the new ring, and take your time—a nicked O-ring is a leaking O-ring.