Description
If you’ve noticed gear oil spots under your David Brown or heard that tell-tale whining from the rear end that signals trouble ahead, worn half axle seals are likely the culprit. These little seals work overtime to keep your differential oil where it belongs while keeping dirt and water out of expensive gears. When they start leaking, you’re looking at more than just messy oil spots—you’re risking serious damage to bearings and ring gears that cost real money to replace.
What You’re Getting
- Precision 81mm x 45mm dimensions that fit exactly like the originals did
- Heavy-duty nitrile rubber construction that handles gear oil and temperature swings without breaking down
- Double-lip design gives you twice the protection against leaks and contamination
- Metal outer case ensures the seal stays put during installation and operation
- Works with both Selectamatic and Implematic transmissions
Built for Real Farm Work
The 990-996 series models are ideal for smaller farms and specialty crop operations where maneuverability matters as much as power. Your 990 might be the designated rake tractor during hay season, that 995 could handle all your mowing duties, or the 996 might be perfect for running the feed mixer. They’re the tractors that just keep going decade after decade, as long as you can get them started each morning.
Made to Last
These seals are built to handle the constant stress of axle movement, oil pressure, and the contamination that comes with farm work. The metal case design prevents the seal from walking out of its bore, while the double-lip construction gives you backup protection if one lip starts to wear. Quality materials mean these seals hold up to temperature extremes and resist the breakdown that cheaper seals suffer from exposure to gear oil additives.
Installation Notes
This job requires pulling the rear wheels and partially disassembling the axle housing to reach the seal location. Before installation, thoroughly clean the seal bore and inspect shaft surfaces – even minor grooves cause rapid seal failure. Use proper seal drivers to avoid lip damage. Apply light coating of gear oil to seal lips before installation. Take your time getting these positioned correctly—a crooked seal is a leaking seal.
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