

The K501 is a two-piece, double-acting piston seal consisting of a sealing ring made of nitrile (NBR) and an O-ring of polyamide (PA) as the energizing element.
The K501 is a two-piece, double-acting piston seal consisting of a sealing ring made of nitrile (NBR) and an O-ring of polyamide (PA) as the energizing element.
Suitable for heavy cylinders, construction machinery and applications that must withstand high and variable pressure.
| Ambient temperature | Pressure (bar) | Speed (m/sec) | Fluid |
|---|---|---|---|
| -30°C to +100°C | ≤500 bar | ≤1.0 m/sec | Mineral oils (DIN 51524) |
| +5°C to +50°C | ≤500 bar | ≤1.0 m/sec | HFA and HFB |
| -20°C to +50°C | ≤500 bar | ≤1.0 m/sec | HFC |

Before buying, measure the current part with calipers and match it against the specification table: inner diameter (ID) at the shaft contact surface, outer diameter (OD) at the housing seat, and thickness (height) measured perpendicular to these two diameters. If you're unsure about the size or lip type, send the old part's code or a photo of it to IranSeal's sales team so they can find the exact match.
IranSeal's sales team is ready to answer your questions about price and availability for this product.
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