Dosatron® D128R Upper Dosing Seal

Product Overview

A compromised upper dosing seal in your Dosatron unit can lead to immediate system shutdowns or inaccurate chemical ratios, resulting in uneven crop growth or severe fertigation failures. During peak growing seasons or tight project deadlines, a leaking injector is more than a nuisance; it is a code violation risk and a threat to your client's yield. With global supply chains remains unpredictable, waiting for a seal to fail before ordering leads to costly downtime and emergency service calls. Keeping these critical wear items in stock ensures your crews can perform on-site maintenance immediately, maintaining project schedules and keeping your clients' systems operational when the heat is highest.

The Dosatron D128R Upper Dosing Seal is engineered specifically for the precise tolerances of the D128R series, offering superior chemical resistance compared to generic O-rings or low-grade alternatives. This specialized component reduces labor costs by ensuring a perfect fit the first time, eliminating the need for repeat visits to address minor leaks. By standardized on genuine Dosatron replacement parts, you ensure the long-term accuracy of the injection system and protect your reputation for high-quality maintenance. Being prepared with a full kit of seals provides a distinct competitive edge by minimizing the turnaround time for critical irrigation repairs.

Product Specifications

Available Models & Sizes

This specific seal is designed for the D128R series injectors, though we maintain a comprehensive inventory of seals and gaskets for the entire Dosatron line including the D14 and D25 models. Please contact our sales team for full seal kit configurations or bulk pricing for large-scale maintenance contracts.

Key Features

• Engineered for high chemical resistance to withstand aggressive fertilizers and acids.
• Precision molded dimensions ensure an airtight seal within the dosing stem assembly.
• Reduces internal friction to maintain consistent injection rates across varying flow levels.
• Genuine Dosatron component guarantees compatibility without the risk of system damage.
• Simple drop-in design allows for rapid field replacement by your installation crews.
• Durable elastomer construction extends the service interval between routine maintenance.

Common Applications

• Agricultural and crop irrigation.
• Greenhouse and nursery operations.
• Chemical and fertigation delivery.
• Commercial landscape irrigation.
• Golf course and sports turf maintenance.
• Municipal parks and public spaces.

Installation Notes

Before installing the new upper dosing seal, ensure the D128R unit is depressurized and disconnected from the main water supply. Clean the dosing stem thoroughly to remove any mineral buildup or debris that could compromise the seal. We recommend applying a small amount of silicone-based lubricant to the seal as per manufacturer guidelines to prevent tearing during reassembly. Always follow local plumbing codes regarding backflow prevention when servicing chemical injection equipment.