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

MATERIAL

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) – – + + – –

OPERATING CONDITIONS

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

DESIGN RECOMMENDATION

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
140
119
7.7
8.1
10.5
10.5
2
116.84x7.00
SN203
P20-120246
145
124
7.7
8.1
10.5
10.5
2
123.19x7.00
SN203
P20-120259
150
129
7.7
8.1
10.5
10.5
2
126.37x7.00
SN203
P20-120247
155
134
7.7
8.1
10.5
10.5
2
132.72x7.00
SN203
P20-120260
160
139
7.7
8.1
10.5
10.5
2
135.89x7.00
SN203
P20-120248
165
144
7.7
8.1
10.5
10.5
2
142.24x7.00
SN203
P20-120261
170
149
7.7
8.1
10.5
10.5
2
145.42x7.00
SN203
P20-120249
175
154
7.7
8.1
10.5
10.5
2
151.77x7.00
SN203
P20-120262
180
159
7.7
8.1
10.5
10.5
2
158.12x7.00
SN203
P20-120250
185
164
7.7
8.1
10.5
10.5
2
158.12x7.00
SN203
P20-120263
190
169
7.7
8.1
10.5
10.5
2
164.47x7.00
SN203
P20-120251
195
174
7.7
8.1
10.5
10.5
2
170.82x7.00
SN203
P20-120264
200
179
7.7
8.1
10.5
10.5
2
177.17x7.00
SN203
P20-120252
210
189
7.7
8.1
10.5
10.5
2
183.52x7.00
SN203
P20-120253
215
194
7.7
8.1
10.5
10.5
2
189.87x7.00
SN203
P20-120265
220
199
7.7
8.1
10.5
10.5
2
196.22x7.00
SN203
P20-120254
225
204
7.7
8.1
10.5
10.5
2
202.57x7.00
SN203
P20-120266
230
209
7.7
8.1
10.5
10.5
2
202.57x7.00
SN203
P20-120255
240
219
7.7
8.1
10.5
10.5
2
215.27x7.00
SN203
P20-120256
250
229
7.7
8.1
10.5
10.5
2
227.97x7.00
SN203
P20-120257
20
12.5
3
3.2
3.75
4.5
0.5
12.37x2.62
SN209
P20-120292
22
14.5
3
3.2
3.75
4.5
0.5
13.94x2.62
SN209
P20-120293
24
16.5
3
3.2
3.75
4.5
0.5
15.54x2.62
SN209
P20-120294
25
17.5
3
3.2
3.75
4.5
0.5
17.12x2.62
SN209
P20-120295
28
20.5
3
3.2
3.75
4.5
0.5
20.29x2.62
SN209
P20-120296
30
22.5
3
3.2
3.75
4.5
0.5
21.89x2.62
SN209
P20-120297
32
24.5
3
3.2
3.75
4.5
0.5
23.47x2.62
SN209
P20-120298
35
27.5
3
3.2
3.75
4.5
0.5
26.64x2.62
SN209
P20-120299
36
28.5
3
3.2
3.75
4.5
0.5
28.24x2.62
SN209
P20-120300
38
30.5
3
3.2
3.75
4.5
0.5
29.82x2.62
SN209
P20-120301
40
29
4
4.2
5.5
6
0.8
28.17x3.53
SN209
P20-120302
42
31
4
4.2
5.5
6
0.8
29.75x3.53
SN209
P20-120303
45
34
4
4.2
5.5
6
0.8
32.92x3.53
SN209
P20-120304
48
37
4
4.2
5.5
6
0.8
36.09x3.53
SN209
P20-120305
50
39
4
4.2
5.5
6
0.8
37.69x3.53
SN209
P20-120306
50
42.5
3
3.2
3.75
4.5
0.5
40.94x2.62
SN209
P20-120349
50
34.5
5.9
6.3
7.75
8
1.2
32.69x5.33
SN209
P20-120350
52
41
4
4.2
5.5
6
0.8
40.87x3.53
SN209
P20-120307
55
44
4
4.2
5.5
6
0.8
44.04x3.53
SN209
P20-120308
60
49
4
4.2
5.5
6
0.8
47.22x3.53
SN209
P20-120309
63
47.5
5.9
6.3
7.75
8
1.2
46.99x5.33
SN209
P20-120351
63
52
4
4.2
5.5
6
0.8
50.39x3.53
SN209
P20-120310
65
54
4
4.2
5.5
6
0.8
53.57x3.53
SN209
P20-120311
70
54.5
5.9
6.3
7.75
8
1.2
53.34x5.33
SN209
P20-120312
70
59
4
4.2
5.5
6
0.8
63.09x3.53
SN209
P20-120313
75
59.5
5.9
6.3
7.75
8
1.2
56.52x5.33
SN209
P20-120314
75
64
4
4.2
5.5
6
0.8
63.09x3.53
SN209
P20-120315
80
59
7.7
8.1
10.5
10.5
2
58.00x7.00
SN209
P20-120316
80
64.5
5.9
6.3
7.75
8
1.2
62.87x5.33
SN209
P20-120317
80
69
4
4.2
5.5
6
0.8
66.27x3.53
SN209
P20-120352
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