Description
When hydraulic fluid starts dripping under your tractor or you’re replacing a fitting and notice a hardened old O-ring, you know it’s time to get some fresh seals in your parts bin. These Buna-N O-rings are the workhorses of farm equipment sealing—they handle hydraulic pressure, resist petroleum products, and keep your systems running tight. For use in plumbing, hydraulics, heavy equipment, automotive, irrigation and more.
What You’re Getting
- High-quality Buna-N rubber construction that resists hydraulic fluids, diesel fuel, and most petroleum products
- 10 per package, sold by the package so you’ve got spares when you need them
- 70 durometer rating provides the right balance of flexibility and compression resistance
- Precise 1/2 inch inner diameter and 11/16 inch outer diameter for proper fit and seal
Built for Real Farm Work
These O-rings fit into hydraulic fittings, cylinder caps, pump housings, and anywhere you need a reliable seal in agricultural equipment. Whether you’re working on loader cylinders, three-point lift systems, or hydraulic remote outlets, having the right size O-ring on hand saves time and prevents fluid loss that can damage expensive components.
Made to Last
Buna-N rubber handles the temperature swings and chemical exposure that farm equipment dishes out. Unlike cheaper rubber compounds that crack and harden after a season or two, these O-rings maintain their elasticity and sealing ability through years of service in hydraulic systems operating under pressure.
Installation Notes
Always replace O-rings when disturbing hydraulic connections—reusing old ones invites leaks. Clean the sealing surfaces thoroughly and apply a thin coat of compatible hydraulic fluid to the O-ring before installation. Don’t overstretch the O-ring during installation, and make sure it seats properly in its groove.
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