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- Great chemical resistance (in line with PTFE)
- Exemplary wear resistance
- Continuous operation up to 260°C (500°F)
- Excellent electrical insulation
- Good dimensional stability
- Fantastic mechanical strength
- Resists hydrolysis
- 500 has low friction coefficient
- 207 capable of bearing high loads
- Both easily machinable
CHEMICALLY RESISTANT AND DIMENSIONALLY STABLE PTFE-BASED PRODUCTS
The Fluorosint class of plastic materials distinguishes itself as a type of high-performance engineering plastics. Both Fluorosint 500 and 207 fall within this class, but these semi-crystalline materials separate themselves as different material families based on their qualities and composition. Fluorosint 500 contains PTFE (polytetrafluoroethylene) filled with a proprietary blend of fillers, usually mica or molydbenum disulfide. This crowns it as one of the most dimensionally stable forms of PTFE available. Also as a PTFE-based product, Fluorosint 500 offers a lower wear rate and a lower thermal expansion coefficient than PTFE. Fluorosint 207 is also a PTFE-based material but has a combination of different fillers, including bronze, a lower concentration of mica, and/or other PTFE resins as fillers. In contrast, this material is more ductile but has a higher coefficient of expansion.
GRADE | PRODUCT CHARACTERISTICS | COMMON APPLICATIONS |
|---|---|---|
Fluorosint 500 | Low coefficient of friction, good electrical properties, low wear rate | Bearings, bushings, and other wear items |
Fluorosint 207 | More ductile, stable to 550F | Hot air and steam applications |
FLUOROSINT 500
While several properties make Fluorosint 500 stand out, its thermal stability, low friction coefficient, and dimensional stability despite intense conditions mark the material best. Some varieties have the molybdenum disulfide fill that allows a very low coefficient of thermal expansion (approximately 40% of unfilled PTFE) along with a lower wear rate than PTFE.
The unique fillers enhance the material here to make it more accommodating of sliding and rotating components that need that reduced friction element. Due to this factor, Fluorosint 500 makes an excellent choice for bearings, bushings, and other items that assemblies use constantly to function.
Regarding its chemical resistance and operating temperature range, Fluorosint 500 still performs well against tougher conditions. The 500 family can withstand temperatures down to cryogenic levels up to 260°C without losing its structural integrity. Engineers and designers note the material for its chemical resistance to several corrosive liquids among other substances. Resisting most types of chemicals and having little — if any — effect on the product's stability, this material proves itself as a material meant for prolonged use.
COMMON FLUOROSINT 500 APPLICATIONS
- Bearings and bushings
- Seals and gaskets
Although similar to the 500 family, Fluorosint 207 has other properties that separate it from the other. For example, the 207 family has a lower mica fill level. This results in a more ductile material but a higher coefficient of thermal expansion. Fluorosint 207 compares well to 25% glass filled Teflon with the added benefits of strength and less abrasiveness. Additionally, many have noticed its superior creep resistance as another benefit to this material. This figures into its high load bearing capacity and mechanical strength while still retaining thermal conductivity.
Regarding the 207 family's temperature and hydrolysis resistances, their high capacity to remain unmoved by these factors mark it for use in hot air and steam applications. As it stays stable up to 288°C (~550°F), this resin family can take the heat without compromising its structure.
With its chemical resistance, it holds much of the same resistances as its 500 family counterparts. However, if the material needs resistance against strong alkalis, we strongly recommend seeking another material more suited to that use.
COMMON FLUOROSINT 207 APPLICATIONS
- Bearings
- Wear pads
- Thrust washers
- Other applications that need such tribological properties
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