Registration E-CATALOG Contact Sign into newsletter Brochures
Catalogues

SNI 73

Description
Product group: Rod seal
Design: NI asymmetrical u-ring with inner main sealing lip
Profile no.: 73
Specification: E suitable for one-sided pressure load
Model: ZLSTI second sealing lip / inner back-up ring
Seal material: TPU 95 3401
Back-up ring: POM

Operational application limits
Pressure (MPa): ≤ 40
Temperature (°C): -40 to +100
Running speed (m/s): ≤ 0.5

Media
Hydraulic oils acc. to DIN 51524 Part 1 – 3, lubricating oils, mineral oil based lubricating greases, highly non-flammable hydraulic fluids HFA, HFB, HFC acc. to VDMA 24317

Function
The SNI 73 u-ring is produced in a compact design which guarantees good functioning at low pressures and guarantees a particularly long service life. The SNI 73 is a single-acting rod seal. The second seal lip strengthens the sealing function and the semi-active back-up ring on the inner diameter prevents gap extrusion on the side facing away from the pressure.

Installation
U-rings can be installed in both solid and split housings. Please note that for a solid housing application a minimum width is necessary and suitable installation tools may be required.

Remarks
The SNI 73 seal made of TPU material is very robust and is particularly well suited for applications in mobile hydraulics and especially in earth moving equipment, mobile hydraulic platforms, telescope cylinders and press and support cylinders. Despite the small installation dimension, the seal withstands the highest loads. This profile is designed for installation housings conforming to ISO 5597.