Description
When you’re dealing with hydraulic leaks on your tractor or implement, it’s usually the O-rings that are causing the trouble. This hefty 3-3/4 inch inside diameter O-ring handles the bigger fittings and connections you’ll find on main hydraulic lines, cylinders, and pump assemblies. It’s built for the demanding world of plumbing, hydraulics, heavy equipment, automotive, and irrigation work where a failed seal can shut down your operation.
What You’re Getting
- Made of 70 Durometer Buna-N Rubber that stands up to hydraulic fluid, diesel fuel, and the temperature swings farm equipment faces
- 1/8 inch cross-section provides the right compression for reliable sealing without over-squeezing
- Comes in a 10-pack so you’ll have spares on hand for field repairs or scheduled maintenance
- Large 4-inch outside diameter fits the bigger hydraulic components on tractors and implements
Built for Real Farm Work
O-rings appear everywhere on modern equipment – hydraulic fittings, fuel system connections, oil filter housings, coolant joints, and air system fittings all depend on these simple but crucial seals. This size is commonly found on larger tractors, combines, sprayers, and implements where main hydraulic lines connect to cylinders, motors, and valve bodies.
Made to Last
Despite their simplicity, O-rings face harsh conditions. Heat cycles cause them to harden and lose elasticity. Chemical exposure from fuels and fluids degrades rubber compounds. Buna-N rubber resists these problems better than standard rubber, keeping its flexibility and sealing ability longer in the tough farm environment.
Good to Know
Always clean the groove thoroughly before installing a new O-ring – any dirt or old rubber pieces will cause the new seal to fail. A light coat of hydraulic fluid helps with installation and prevents pinching. Keep a few extras in your toolbox since O-rings have a way of failing at the worst possible times.
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