Dynamic Applications

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 A7

The Scraper A7 is a one-piece wiper with a vulcanized metal supporting ring, and is available in NBR or FKM. The scraper A7 in:

  • NBR is suitable for hydraulic and pneumatic applications
  • FKM is particularly suitable for applications where a higher chemical resistance is required.

The vulcanized metal supporting ring ensures a greater stability and allows simple groove design and installation.

The scraper A7 has a elastomeric material hardness of 90 to 95 Shore A.

fields of application
static
dynamic
single-acting
double-acting
linear
rotatory
oscillating
materials
elastomers, metal
technical data
material NBR
pressure -
temperature -40°C / +100°C (material dependent)
speed up to 1 m/s
material FKM
pressure -
temperature -20°C / +200°C (material dependent)
speed up to 1 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. 

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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