Rod Compact Seal R22

DESCRIPTION

The Rod Compact seal R22 consists of a polyurethane profile ring, back-up anti-extrusion ring and a rubber ring as an element for increasing the preload force of the sealing lips.
It is a heavy duty single acting seal designed for installation in groove sized according to ISO 7425 -1
This set of seals is suitable for the hardest operating conditions and has a high resistance to extrusion into the gap. It is extremely insensitive to peak pressures and shows very good sealing at zero pressure.

APPLICATION
Where fabric reinforced seals are insuficient
Where chock loads and pressure peaks occur
Mobile hydraulics
Stationary hydraulics

MATERIAL

Standard material
Material Code SU515
Material Base Polyurethane, 94 Shore A
O-Ring energizer NBR 70 Shore A
back-up ring material base Polyamide filled

OPERATING CONDITIONS

Pressure, Speed
Working pressure, p 50 MPa
Pressure peaks 100 Mpa
Running speed, v 0,5 m/s

Medium, Working Temperature
Material Code SU515
Hydraulic oils: HL, HLP -30.. +110 ˚C
HFA, HFB fluids +5 … +60 oC
Mineral greases -30 … +110 °C

DESIGN RECOMMENDATION

Max.permissible gap dimension, emax
Profile Max operating pressure
S 16 MPa 26 MPa 40 MPa 50 MPa 70 MPa
7,5 0,60 0,40 0,30 0,25 0,20
10 0,70 0,50 0,35 0,30 0,25
12,5 0,80 0,60 0,40 0,35 0,30
15 1,00 0,80 0,45 0,40 0,35
Surface quality*
Surface roughness Ra Rz
Sliding surfaces 0,4μm ≤ 1,6 μm
Groove base ≤ 1,6 μm ≤ 6,3 μm
Groove flanks ≤ 3.2 μm ≤ 10 μm

*Contact area Mr = 50% to 90% at cutting depth c=Rz/2 and reference line Cref=0%

Ød
ØD
H
L