Common Dosatron Seal Materials
AF, or Aflas
AF, or Aflas is generally suited to alkaline products and many agricultural or cleaning-related applications. It is commonly selected when dosing products that require strong resistance to higher pH solutions and demanding chemical environments.
VF, or Viton
VF, or Viton, is generally suited to acidic products and a wide range of chemical dosing applications where strong compatibility with lower pH solutions is required. It is often used when dosing acids, sanitisers, and other more aggressive treatment products.
AF vs VF at a Glance
AF / Aflas
- Typically suited to alkaline products
- Common in fertiliser and cleaning applications
- Good resistance in high pH environments
VF / Viton
- Typically suited to acidic products
- Common in acid dosing and treatment applications
- Good resistance in lower pH environments
How to Choose the Right Seal Material
The right seal material depends on the chemical or product you intend to dose. As a general guide, Aflas is more commonly selected for alkaline products, while Viton is more commonly selected for acidic products.
However, chemical compatibility can vary depending on the exact product concentration, formulation, temperature, and operating conditions. If you are unsure, it is always best to confirm compatibility before selecting a pump.
Typical Application Examples
Important note: Always confirm chemical compatibility for the exact product being used.
| AF / Aflas may be suitable for: | V/S | VF / Viton may be suitable for: | |||
|---|---|---|---|---|---|
| Many alkaline fertiliser solutions | Acidic treatment products | ||||
| Some detergents and cleaning products | Sanitisers and disinfection chemicals | ||||
| General agricultural chemical dosing where alkaline resistance is needed | pH correction and water treatment applications |
What Happens if the Wrong Seal Material is Chosen?
Selecting the wrong seal material can reduce pump performance, shorten service life, and increase maintenance requirements. Incompatible materials may swell, harden, crack, or deteriorate over time when exposed to unsuitable chemicals.
Choosing the correct seal material helps protect your investment and ensures more reliable long-term dosing performance.
How Seal Material Appears in the Model Code
Dosatron model codes often include the seal material as part of the product name, making it easier to identify the correct option when choosing a pump.
Examples:
- AF = Aflas
- VF = Viton
Example Model: D25RE2VF
In this model code, VF indicates a Viton seal configuration suited to acidic chemical applications.
Need Help Choosing the Right Seal Material?
If you are unsure which seal option is best for your application, our team can help guide you based on your chemical type, dosing requirements, and operating conditions.