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
20
12.5
3
3.2
3.75
4.5
0.5
12.37x2.62
SN203
P20-120201
22
14.5
3
3.2
3.75
4.5
0.5
13.94x2.62
SN203
P20-120202
24
16.5
3
3.2
3.75
4.5
0.5
15.54x2.62
SN203
P20-120203
25
17.5
3
3.2
3.75
4.5
0.5
17.12x2.62
SN203
P20-120204
28
20.5
3
3.2
3.75
4.5
0.5
20.29x2.62
SN203
P20-120205
30
22.5
3
3.2
3.75
4.5
0.5
21.89x2.62
SN203
P20-120206
32
24.5
3
3.2
3.75
4.5
0.5
23.47x2.62
SN203
P20-120207
35
27.5
3
3.2
3.75
4.5
0.5
26.64x2.62
SN203
P20-120208
36
28.5
3
3.2
3.75
4.5
0.5
26.64x2.62
SN203
P20-120209
38
30.5
3
3.2
3.75
4.5
0.5
29.82x2.62
SN203
P20-120210
40
29
4
4.2
5.5
6
0.8
28.17x3.53
SN203
P20-120211
42
31
4
4.2
5.5
6
0.8
29.75x3.53
SN203
P20-120212
45
34
4
4.2
5.5
6
0.8
32.92x3.53
SN203
P20-120213
48
37
4
4.2
5.5
6
0.8
36.09x3.53
SN203
P20-120214
50
39
4
4.2
5.5
6
0.8
37.69x3.53
SN203
P20-120215
50
42.5
3
3.2
3.75
4.5
0.5
40.94x2.62
SN203
P20-120258
50
34.5
5.9
6.3
7.75
8
1.2
32.69x5.33
SN203
P20-120259
52
41
4
4.2
5.5
6
0.8
40.87x3.53
SN203
P20-120216
55
44
4
4.2
5.5
6
0.8
44.04x3.53
SN203
P20-120217
60
49
4
4.2
5.5
6
0.8
47.22x3.53
SN203
P20-120218
63
47.5
5.9
6.3
7.75
8
1.2
46.99x5.33
SN203
P20-120260
63
52
4
4.2
5.5
6
0.8
50.39x3.53
SN203
P20-120219
65
54
4
4.2
5.5
6
0.8
53.57x3.53
SN203
P20-120220
70
54.5
5.9
6.3
7.75
8
1.2
53.34x5.33
SN203
P20-120221
70
59
4
4.2
5.5
6
0.8
56.74x3.53
SN203
P20-120222
75
59.5
5.9
6.3
7.75
8
1.2
56.52x5.33
SN203
P20-120223
75
64
4
4.2
5.5
6
0.8
63.09x3.53
SN203
P20-120224
80
59
7.7
8.1
10.5
10.5
2
58.00x7.00
SN203
P20-120225
80
64.5
5.9
6.3
7.75
8
1.2
62.87x5.33
SN203
P20-120226
80
69
4
4.2
5.5
6
0.8
66.27x3.53
SN203
P20-120261
85
64
7.7
8.1
10.5
10.5
2
63.00x7.00
SN203
P20-120227
85
69.5
5.9
6.3
7.75
8
1.2
69.22x5.33
SN203
P20-120228
90
69
7.7
8.1
10.5
10.5
2
68.00x7.00
SN203
P20-120229
90
74.5
5.9
6.3
7.75
8
1.2
72.39x5.33
SN203
P20-120230
95
74
7.7
8.1
10.5
10.5
2
73.00x7.00
SN203
P20-120231
95
79.5
5.9
6.3
7.75
8
1.2
78.74x5.33
SN203
P20-120232
100
79
7.7
8.1
10.5
10.5
2
78.00x7.00
SN203
P20-120233
100
84.5
5.9
6.3
7.75
8
1.2
81.92x5.33
SN203
P20-120234
105
89.5
5.9
6.3
7.75
8
1.2
88.97x5.33
SN203
P20-120235
110
89
7.7
8.1
10.5
10.5
2
88.00x7.00
SN203
P20-120236
110
94.5
5.9
6.3
7.75
8
1.2
91.44x5.33
SN203
P20-120237
115
94
7.7
8.1
10.5
10.5
2
94.00x7.00
SN203
P20-120238
115
99.5
5.9
6.3
7.75
8
1.2
97.79x3.53
SN203
P20-120239
120
99
7.7
8.1
10.5
10.5
2
98.00x7.00
SN203
P20-120240
120
104.5
5.9
6.3
7.75
8
1.2
100.97x5.33
SN203
P20-120241
125
104
7.7
8.1
10.5
10.5
2
103.00x7.00
SN203
P20-120242
125
109.5
5.9
6.3
7.75
8
1.2
107.32x5.33
SN203
P20-120243
130
109
7.7
8.1
10.5
10.5
2
108.00x7.00
SN203
P20-120244
130
114.5
5.9
6.3
7.75
8
1.2
113.67x5.33
SN203
P20-120245
135
114
7.7
8.1
10.5
10.5
2
113.67x7.00
SN203
P20-120258
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