Description
If your Solo backpack sprayer is losing pressure or you’ve noticed chemical residue around the pump area, a worn O-ring is likely the culprit. This small rubber seal keeps your pump system tight and prevents those annoying leaks that waste chemicals and reduce your spray pressure. When O-rings fail, you’ll spend more time pumping and less time getting the job done.
What You’re Getting
- Perfect seal for maintaining proper pump pressure in your Solo sprayer
- Chemical-resistant rubber that holds up to herbicides, pesticides, and fertilizer solutions
- Direct replacement part that restores factory performance
- Precision-sized to fit Solo 425 and 475 models without modifications
Built for Real Farm Work
This O-ring fits the Solo 425 and 475 backpack sprayers, the workhorses that handle everything from spot-spraying fence rows to treating entire fields. Whether you’re mixing up tank loads of glyphosate for weed control or applying fungicides to crops, this seal ensures your sprayer maintains the pressure you need for consistent coverage.
Made to Last
Solo uses chemically resistant seals throughout their sprayers, and this O-ring is built to the same standards. The rubber compound resists swelling and cracking from chemical exposure, temperature changes, and the constant pressure cycles of pump operation.
Installation Notes
Replacing this O-ring is straightforward—just make sure to clean the groove thoroughly before installing the new seal. A little spray lubricant helps with installation, and double-check that the O-ring sits properly in its groove before reassembling your pump. It’s a good idea to replace pump seals as a set when you’re in there.
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