Piston Seal Set P20
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
Material
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ØD | Ød | H | L | S | C | R | O-ring size | Material | Order code | ||
|---|---|---|---|---|---|---|---|---|---|---|---|
190 |
169 |
7.7 |
8.1 |
10.5 |
10.5 |
2 |
164.47x7.00 |
SF207 |
P20-120434 |
|
|
195 |
174 |
7.7 |
8.1 |
10.5 |
10.5 |
2 |
170.82x7.00 |
SF207 |
P20-120447 |
|
|
200 |
179 |
7.7 |
8.1 |
10.5 |
10.5 |
2 |
177.17x7.00 |
SF207 |
P20-120435 |
|
|
210 |
189 |
7.7 |
8.1 |
10.5 |
10.5 |
2 |
183.52x7.00 |
SF207 |
P20-120436 |
|
|
215 |
194 |
7.7 |
8.1 |
10.5 |
10.5 |
2 |
189.87x7.00 |
SF207 |
P20-120448 |
|
|
220 |
199 |
7.7 |
8.1 |
10.5 |
10.5 |
2 |
196.22x7.00 |
SF207 |
P20-120437 |
|
|
225 |
204 |
7.7 |
8.1 |
10.5 |
10.5 |
2 |
202.57x7.00 |
SF207 |
P20-120449 |
|
|
230 |
209 |
7.7 |
8.1 |
10.5 |
10.5 |
2 |
202.57x7.00 |
SF207 |
P20-120438 |
|
|
240 |
219 |
7.7 |
8.1 |
10.5 |
10.5 |
2 |
215.27x7.00 |
SF207 |
P20-120439 |
|
|
250 |
229 |
7.7 |
8.1 |
10.5 |
10.5 |
2 |
227.97x7.00 |
SF207 |
P20-120440 |
|