Buna-N Rubber O-Ring 5-1/8 Inch ID x 5-3/8 Inch OD – 10 Pack

Description

When you’re dealing with a hydraulic leak on your tractor or loader, you know how frustrating it can be to find fluid puddles under your equipment. These Buna-N rubber O-rings are the reliable seals that stop those annoying leaks and keep your hydraulic systems running smooth. At this larger size, they’re commonly used in bigger hydraulic components where a solid seal means the difference between a productive day and downtime in the shop.

What You’re Getting

• Ten high-quality O-rings made from 70 durometer Buna-N rubber that resists hydraulic fluid and temperature swings
• Precise 5-1/8 inch inside diameter and 5-3/8 inch outside diameter for exact fit in larger hydraulic housings
• 1/8 inch cross-section width provides the right compression for reliable sealing
• Chemical resistance to hydraulic oil, diesel fuel, and most petroleum products you’ll encounter on the farm
• Flexibility that maintains seal integrity through temperature changes from cold morning starts to hot summer field work

Built for Real Farm Work

These larger O-rings are perfect for hydraulic pumps, valve bodies, cylinder housings, and other heavy-duty components where reliable sealing is critical. For use in plumbing, hydraulics, heavy equipment, automotive, irrigation and more. Whether you’re rebuilding a loader valve, resealing a three-point hitch cylinder, or fixing a hydraulic pump, these rings handle the pressure and keep your systems sealed tight.

Made to Last

Buna-N rubber is the workhorse material for farm hydraulics because it stands up to the heat, pressure, and fluid exposure that comes with agricultural equipment. The 70 durometer rating gives you the right balance of flexibility for sealing and firmness to resist extrusion under pressure. These rings maintain their sealing properties through thousands of pressure cycles and temperature swings.

Installation Notes

Clean the O-ring grooves thoroughly before installation – any dirt or old rubber fragments will cause the new seal to leak. A light coat of hydraulic fluid helps the O-ring slide into place without nicking or twisting. Never force an O-ring into a groove that’s too small, and check that you’re using the right size for your application.