Shaft O-Ring Seal for Massey Ferguson 300 Series and 4200/4300 Series Tractors

Description

When you notice hydraulic fluid seeping around shafts or losing pressure in your hydraulic system, a worn shaft O-ring is likely the culprit. This essential seal maintains the critical barrier between moving parts and hydraulic fluid, preventing costly leaks and system contamination. A failed O-ring allows fluid to bypass where it should, leading to low pressure and eventual system failure. This replacement O-ring gets your Massey sealed up right so you can focus on the work at hand.

Key Features

• Quality rubber compounds resist hydraulic fluid and temperature extremes while maintaining the flexibility needed for reliable sealing
• Engineered to handle the demanding conditions of agricultural hydraulic systems from cold morning starts to hot summer field work
• Precise dimensions ensure proper fit and sealing performance in shaft applications
• Direct replacement that restores original system integrity without modifications

Built for Real Farm Work

This O-ring fits a wide range of Massey Ferguson tractors including the reliable 300 series models (362, 365, 375, 390, 396, 398, 399, 390T, 382) and the powerful 4200 and 4300 series tractors. Whether you’re running a mid-size 375 on hay equipment or operating a 4270 on heavy tillage work, these tractors depend on proper hydraulic sealing for three-point hitch operation, loader function, and remote hydraulics.

Made to Last

This O-ring uses special compounds designed specifically for hydraulic applications, with material that resists swelling and deterioration caused by hydraulic fluids while maintaining flexibility throughout its service life. It’s built to handle the constant pressure cycles and temperature swings that come with real farm work.

Installation Notes

Resealing hydraulic components is a perfect winter shop project – start by thoroughly cleaning the outside of all components so dirt doesn’t fall into open hydraulic lines. Lubricate the O-ring with clean hydraulic fluid before installation and ensure it isn’t twisted or pinched during assembly. If one O-ring has failed, others are likely marginal, so consider replacing all accessible seals while you’re at it.