Dosatron Seal Kit - for D8R 40gpm Injector - Viton Seals

Restore Peak Performance to a Dosatron D8R with Genuine Viton Seals

A Dosatron D8R injector that starts leaking or dosing inconsistently usually needs one thing: fresh seals. This genuine Dosatron Seal Kit provides the exact replacement seals for the D8R 40gpm injector, restoring accurate, leak-free chemical dosing without a full injector replacement.

Viton construction resists acids, concentrated fertilizers, and other aggressive liquid chemistries far longer than standard seal material, protecting both dosing accuracy and injector lifespan.

Key Features & Benefits

• Genuine Dosatron replacement seals — exact-fit components that maintain dosing accuracy and prevent leaks after routine service.
• Viton seal material — highly resistant to acids, concentrated nutrients, disinfectants, and other aggressive chemicals.
• Built specifically for the D8R 40gpm injector — no guesswork — fits directly with no modification required.
• Extends injector lifespan — rebuilding with genuine seals costs less than replacing the injector outright.

Who Should Use This

Operations running a Dosatron D8R for high-volume fertilization or sanitation, and who handle their own routine seal replacement, are the direct fit for this kit.

About Dosatron

Dosatron International has manufactured non-electric, water-powered dosing pumps since 1974 from its Tresses, France headquarters, with a Clearwater, Florida base serving North America for over 30 years. Every genuine seal kit ships to the same tolerances as the original D8R components.

Frequently Asked Questions

Which injector model is this kit built for?

This seal kit is designed specifically for the Dosatron D8R 40gpm injector. Confirm your model before ordering, since seal kits are not interchangeable across Dosatron injector families.

Why choose Viton seals over standard seals?

Viton offers superior chemical resistance compared to standard seal material, particularly against acids, concentrated fertilizers, and disinfectants. That resistance is what keeps a heavily used injector dosing accurately between rebuilds.

How often should these seals be replaced?

Inspect seals annually, or sooner whenever dosing accuracy drops or a leak appears. Replacement frequency depends on chemical aggressiveness and how many hours the injector runs.

Is this kit something I can install myself?

Yes — Dosatron injectors are built for user-serviceable maintenance. The D8R service manual walks through the seal replacement step by step.