Dynamic Seals

Scraper

A scraper prevents the adhering dirt and dust of the rod from being drawn into hydraulic and pneumatic systems. Scrapers exist in a variety of materials; the most common ones are PTFE (with or without fillers), elastomer and polyurethane.

   

Scraper A3

The Scraper A3 consists of a PTFE element with two wiper edges and an O-ring as preload element. The Scraper A3 has excellent sliding properties, runs stick-slip free and has good media resistance. This is ideal for all applications with heavy dirt infestations. The second sealing lip wipes off the residual oil film from the rod. This is ideal for large installation spaces in comparison to the A2 design, especially suitable for heavy use.

The PTFE compound is filled with bronze or carbon graphite to improve the compressive strength. O-rings are available in a variety of different materials.

fields of application
static
dynamic
single-acting
double-acting
linear
rotatory
oscillating
materials
elastomers, PTFE, PTFE with filling material
technical data
material NBR
pressure -
temperature -30°C / +80°C (material dependent)
speed up to 10 m/s
material FKM
pressure -
temperature -20°C / +200°C (material dependent)
speed up to 10 m/s
Maximum values temperature, speed and pressure are simultaneously not applicable! The values vary in dependence of material and media. For technical queries please contact our application consultants – we have the right solution for you. 
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Your contact person regarding

Technical topics - special designs

Do you have any questions, ideas or suggestions?

We would be happy to advise you.

Personally, by phone or in digital form.

Mr. Andreas Raidt
+49 (0) 7034 2518 - 240

ara(a)ulman.de

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