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Surface treatments to improve friction characteristics
Elastomers have a high coefficient of friction. This means they tend to stick, either to each other during automated assembly, or to mating surfaces when inserted into a housing. Trelleborg Sealing Solutions offers a number of surface treatments that improve the friction characteristics of elastomer seals. Enhancing wear resistance, they lower insertion forces and allow sealing in some dynamic applications.
FF Coating with FDA approval
FF coating is the ideal surface treatment for food, beverage and pharmaceutical processing.
- Compliant to FDA and other standards pertaining to the handling of food and potable water
- Water based, solvent-free and transparent
- Operating temperature of -40ºC / -40ºF to 150ºC / 302ºF.
Ideal for automated assembly
The coating is suited for all kinds of elastomer seals, depending on their shape and size, and does not affect the seal’s natural elasticity. Its reduced friction makes it ideal in automated assembly processes. Suited for both static and low-level dynamic applications, with infrequent movement and short stroke rate, it retains its properties in repeated insertion and dismantling processes.
Areas of use:
- Plug-in couplings or quick-release couplings
- Seals inside valves
- Any kind of automated or manual assembly
| FF Coating | |
|---|---|
| Type | coating, PTFE |
| Color | transparent (milky) |
| Quality Control | reference sample |
| Coating Thickness (guidance) | 2 - 10μm (deviations possible, dependant on the parts geometry) |
| Temperature Range | -40°C to +150°C / -40°F to +302°F |
| Approvals / Guidelines | FDA HHS 21 CFR Ch. I §§175.300/177.1520 approved according to the Foodstuffs and Commodities Act (LMBG, § 5, paragraph 1, § 31, paragraph 1) complies with the standards of the German Federal Environmental Agency (FEA), valid for the area D2 (seals) |
| Hardness of the coated part | increase in the hardness of the sealing surface of up to +4 IRHD possible (measured on the finished part) |
| Characteristics | • Solvent Free • Water-based dry coating • Contains no materials requiring declaration to VDA 232-101 |
| Area of application | for all types of elastomer (dependant on formulation) |
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