John DeereO-Ring – Nominal Section (IN): 0.1390Part No: R522921

The John Deere O-Ring R522921 is built to deliver a dependable, leak-resistant seal in demanding hydraulic and fluid system environments. Engineered from strong, flexible materials, this O-Ring maintains its integrity under pressure and resists breakdown from oils, fuels, and extreme temperatures. Its round cross-section ensures uniform compression, allowing for an effective seal that prevents fluid loss and system contamination. Whether you’re performing routine service or replacing worn components in tractors, loaders, or other heavy-duty equipment, the R522921 helps maintain proper system performance and efficiency. It fits precisely, installs with ease, and contributes to extended equipment life by protecting against wear and mechanical failures. Reliable sealing is critical for operational uptime, and this O-Ring is designed to meet that need in the toughest field conditions. Available through Doggett John Deere, the R522921 offers the quality and durability trusted by professionals to keep their equipment running at its best.