DESCRIPTION
P20 Piston Seal Set is duoble acting seal for medium duty application and housing according to ISO 7425-1. It is consisting of PTFE profile ring and an O-ring as energising element.
Features of this seal are very high static and dynamic sealing effect, high resistance against pressure, extrusion, abrasiion and low friction without the apperiance of stick-slip.
APPLICATION
Industrial vehicles
Agricultural machinery
Cranes
Presses
Handling equipment
Marine hydraulics
Injection moulding machines
Control and regulation equipment
Standard material | |||
---|---|---|---|
Material Code | SN203 | SN209 | SF207 |
O-ring NBR 70 ShA | N7020 | N7020 | – |
O-ring FKM 70 | – | – | F9172 |
PTFE Bronze | T1004 | – | T1004 |
PTFE glass,MoS2 | – | T1021 | – |
Applications Selection Table |
PTFE Bronze-NBR Set code SN203 |
PTFE Glass-NBR Set code SN209 |
PTFE Bronze-FKM Set code SF207 |
---|---|---|---|
Hydraulic oils (-10..+200˚C) | – – | – – | + + |
Hydraulic oils (-30..+100˚C) | + + | + – | – – |
Water Hydraulics (-30..+100˚C) | – – | + + | – – |
Pressure, Speed | |
---|---|
Working pressure | Max 40 Mpa |
Running speed, v | Up to 5 m/s |
Medium, Working temperature | |||
---|---|---|---|
Material Code | SN203 | SN209 | SF207 |
Hydraulic oils:HL, HLP | -30.. +100 ˚C | -30.. +100 ˚C | -10.. +200 ˚C |
HFA, HFB fluids | – | +5..+60 oC | – |
HFC fluids | – | -30..+60 oC | – |
HFD fluids | – | – | -10.. +200 ˚C |
Water | – | +5..+100oC | – |
Mineral greases | -30.. +100 ˚C | -30.. +100 ˚C | -10.. +200 ˚C |
Max. permissible gap dimension, emax | |||||
---|---|---|---|---|---|
Profile size | Max operating pressure | ||||
L | S | 16 MPa | 26 MPa | 32 MPa | 40 MPa |
3,2 | 3,75 | 0,40 | 0,35 | – | – |
4,2 | 5,50 | 0,50 | 0,40 | 0,30 | – |
6,3 | 7,55 | 0,55 | 0,45 | 0,35 | 0,30 |
8,1 | 10,50 | 0,60 | 0,50 | 0,40 | 0,30 |
Surface quality* | ||
---|---|---|
Surface roughness | Ra | Rmax |
Sliding surfaces | 0.05 .. 0,3μm | ≤ 2,5 μm |
Groove base | ≤ 1,6 μm | ≤ 6,3 μm |
Groove flanks | ≤ 3,0 μm | ≤ 15 μm |
Chamfer | ≤ 4,0 μm | ≤ 16 μm |
*Contact area Mr = 50% to 90% at cutting depth c=Rz/2 and reference line Cref=0%
ØD
Ød
H
L
S