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
85
64
7.7
8.1
10.5
10.5
2
63.00x7.00
SN209
P20-120318
85
69.5
5.9
6.3
7.75
8
1.2
69.22x5.33
SN209
P20-120319
90
69
7.7
8.1
10.5
10.5
2
68.00x7.00
SN209
P20-120320
90
74.5
5.9
6.3
7.75
8
1.2
72.39x5.33
SN209
P20-120321
95
74
7.7
8.1
10.5
10.5
2
73.00x7.00
SN209
P20-120322
95
79.5
5.9
6.3
7.75
8
1.2
78.74x5.33
SN209
P20-120323
100
79
7.7
8.1
10.5
10.5
2
78.00x7.00
SN209
P20-120324
100
84.5
5.9
6.3
7.75
8
1.2
81.92x5.33
SN209
P20-120325
105
89.5
5.9
6.3
7.75
8
1.2
88.97x5.33
SN209
P20-120326
110
89
7.7
8.1
10.5
10.5
2
88.00x7.00
SN209
P20-120327
110
94.5
5.9
6.3
7.75
8
1.2
91.44x5.33
SN209
P20-120328
115
94
7.7
8.1
10.5
10.5
2
94.00x7.00
SN209
P20-120329
115
99.5
5.9
6.3
7.75
8
1.2
97.79x3.53
SN209
P20-120330
120
99
7.7
8.1
10.5
10.5
2
98.00x7.00
SN209
P20-120331
120
104.5
5.9
6.3
7.75
8
1.2
100.97x5.33
SN209
P20-120332
125
104
7.7
8.1
10.5
10.5
2
103.00x7.00
SN209
P20-120333
125
109.5
5.9
6.3
7.75
8
1.2
107.32x5.33
SN209
P20-120334
130
109
7.7
8.1
10.5
10.5
2
108.00x7.00
SN209
P20-120335
130
114.5
5.9
6.3
7.75
8
1.2
113.67x5.33
SN209
P20-120336
135
114
7.7
8.1
10.5
10.5
2
113.67x7.00
SN209
P20-120349
140
119
7.7
8.1
10.5
10.5
2
116.84x7.00
SN209
P20-120337
145
124
7.7
8.1
10.5
10.5
2
123.19x7.00
SN209
P20-120350
150
129
7.7
8.1
10.5
10.5
2
126.37x7.00
SN209
P20-120338
155
134
7.7
8.1
10.5
10.5
2
132.72x7.00
SN209
P20-120351
160
139
7.7
8.1
10.5
10.5
2
135.89x7.00
SN209
P20-120339
165
144
7.7
8.1
10.5
10.5
2
142.24x7.00
SN209
P20-120352
170
149
7.7
8.1
10.5
10.5
2
145.42x7.00
SN209
P20-120340
175
154
7.7
8.1
10.5
10.5
2
151.77x7.00
SN209
P20-120353
180
159
7.7
8.1
10.5
10.5
2
158.12x7.00
SN209
P20-120341
185
164
7.7
8.1
10.5
10.5
2
158.12x7.00
SN209
P20-120354
190
169
7.7
8.1
10.5
10.5
2
164.47x7.00
SN209
P20-120342
195
174
7.7
8.1
10.5
10.5
2
170.82x7.00
SN209
P20-120355
200
179
7.7
8.1
10.5
10.5
2
177.17x7.00
SN209
P20-120343
210
189
7.7
8.1
10.5
10.5
2
183.52x7.00
SN209
P20-120344
215
194
7.7
8.1
10.5
10.5
2
189.87x7.00
SN209
P20-120356
220
199
7.7
8.1
10.5
10.5
2
196.22x7.00
SN209
P20-120345
225
204
7.7
8.1
10.5
10.5
2
202.57x7.00
SN209
P20-120357
230
209
7.7
8.1
10.5
10.5
2
202.57x7.00
SN209
P20-120346
240
219
7.7
8.1
10.5
10.5
2
215.27x7.00
SN209
P20-120347
250
229
7.7
8.1
10.5
10.5
2
227.97x7.00
SN209
P20-120348
20
12.5
3
3.2
3.75
4.5
0.5
12.37x2.62
SF207
P20-120384
22
14.5
3
3.2
3.75
4.5
0.5
13.94x2.62
SF207
P20-120385
24
16.5
3
3.2
3.75
4.5
0.5
15.54x2.62
SF207
P20-120386
25
17.5
3
3.2
3.75
4.5
0.5
17.12x2.62
SF207
P20-120387
28
20.5
3
3.2
3.75
4.5
0.5
20.29x2.62
SF207
P20-120388
30
22.5
3
3.2
3.75
4.5
0.5
21.89x2.62
SF207
P20-120389
32
24.5
3
3.2
3.75
4.5
0.5
23.47x2.62
SF207
P20-120390
35
27.5
3
3.2
3.75
4.5
0.5
26.64x2.62
SF207
P20-120391
36
28.5
3
3.2
3.75
4.5
0.5
28.24x2.62
SF207
P20-120392
38
30.5
3
3.2
3.75
4.5
0.5
29.82x2.62
SF207
P20-120393
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