Piston Seal Set P21

DESCRIPTION
Piston Seal Set P21 is duoble acting seal for medium duty application and housing according to ISO 7425-1. It is consisting of Polyurethane profile ring and an O-ring as energising element.

Features of this seal are very high static and dynamic sealing effect, high resistance against abrasion and low friction without the apperiance of stick-slip.

APPLICATION
Standard cylinders
Cranes
Machine tools
Injection molding machines
Handling machinery
Industrial vehicles
Agricultural machinery

MATERIAL

Standard material
Material Set Code SN211
O-ring NBR 70 ShA, Code N7020
Polyurethane, Code U5012

OPERATING CONDITIONS

Pressure, Speed
Working pressure, p in Mpa 25
Running speed, v in m/s 0,5 m/s
Media, Operating temperature
Material Set Code SN211
Hydraulic oils: HL, HLP -30.. +100 ˚C
HFA, HFB fluids +5..+ 50 °C
HFC fluids -30..+40 °C
HFD fluids –
Water +5..+50 °C
Mineral greases -30.. +100 ˚C

DESIGN RECOMMENDATION

Max. permissible gap dimension, emax
Working temp. Profil, S Max operating pressure
(°C) (mm) 16MPa 25MPa
60 ≤ 10,5 0,50 0,35
80 ≤ 10,5 0,40 0,25
Surface quality*
Surface roughness Ra Rmax
Sliding surfaces 0.05.. 0,3 μm ≤ 2,5 μm
Groove base ≤ 1,6 μm ≤ 6,3 μm
Groove flanks ≤ 3,0 μm ≤ 15 μm

*Contact area Mr = 50% to 90% at cutting depth c=Rz/2 and reference line Cref=0%

ØD
Ød
H
L
S
Material
Filters Sort results
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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
3
0.5
12.37x2.62
SN211
P21-122001
25
14
4
4.2
5.5
4.5
0.5
13.87x3.53
SN211
P21-122002
25
17.5
3
3.2
3.75
3
0.5
17.12x2.62
SN211
P21-122003
32
21
4
4.2
5.5
4.5
0.5
20.22x3.53
SN211
P21-122004
32
24.5
3
3.2
3.75
3
0.5
23.47x2.62
SN211
P21-122005
35
27.5
3
3.2
3.75
3
0.5
26.64x2.62
SN211
P21-122043
40
29
4
4.2
5.5
4.5
0.5
28.17x3.53
SN211
P21-122006
40
32.5
3
3.2
3.75
3
0.5
31.42x2.62
SN211
P21-122007
45
34
4
4.2
5.5
4.5
0.5
32.92x3.53
SN211
P21-122008
50
34.5
6
6.3
7.75
6
0.9
32.69x5.33
SN211
P21-122009
50
39
4
4.2
5.5
4.5
0.5
37.70x3.53
SN211
P21-122010
55
39.5
6
6.3
7.75
6
0.9
37.47x5.33
SN211
P21-122011
55
44
4
4.2
5.5
4.5
0.5
44.04x3.53
SN211
P21-122012
56
45
4
4.2
5.5
4.5
0.5
44.04x3.53
SN211
P21-122013
60
44.5
6
6.3
7.75
6
0.9
43.82x5.33
SN211
P21-122014
60
49
4
4.2
5.5
4.5
0.5
47.22x3.53
SN211
P21-122015
63
47.5
6
6.3
7.75
6
0.9
46.99x5.33
SN211
P21-122016
63
52
4
4.2
5.5
4.5
0.5
50.39x3.53
SN211
P21-122017
65
49.5
6
6.3
7.75
6
0.9
46.99x5.33
SN211
P21-122018
65
54
4
4.2
5.5
4.5
0.5
53.57x3.53
SN211
P21-122019
70
54.5
6
6.3
7.75
6
0.9
53.34x5.33
SN211
P21-122020
70
59
4
4.2
5.5
4.5
0.5
56.74x3.53
SN211
P21-122021
75
59.5
6
6.3
7.75
6
0.9
56.52x5.33
SN211
P21-122022
75
64
4
4.2
5.5
4.5
0.5
63.09x3.53
SN211
P21-122023
80
64.5
6
6.3
7.75
6
0.9
62.87x5.33
SN211
P21-122024
80
69
4
4.2
5.5
4.5
0.5
66.27x3.53
SN211
P21-122025
85
69.5
6
6.3
7.75
6
0.9
69.92x5.33
SN211
P21-122026
90
74.5
6
6.3
7.75
6
0.9
72.39x5.33
SN211
P21-122027
100
84.5
6
6.3
7.75
6
0.9
81.92x5.33
SN211
P21-122028
105
89.5
6
6.3
7.75
6
0.9
88.27x5.33
SN211
P21-122029
110
94.5
6
6.3
7.75
6
0.9
91.44x5.33
SN211
P21-122030
115
94
7.7
8.1
10.5
8
0.9
93.00x7.00
SN211
P21-122044
115
99.5
6
6.3
7.75
6
0.9
97.79x3.53
SN211
P21-122031
120
104.5
6
6.3
7.75
6
0.9
100.97x5.33
SN211
P21-122032
125
104
7.7
8.1
10.5
8
0.9
103.00x7.00
SN211
P21-122033
125
109.5
6
6.3
7.75
6
0.9
107.32x5.33
SN211
P21-122034
130
109
7.7
8.1
10.5
8
0.9
108.00x7.00
SN211
P21-122035
130
114.5
6
6.3
7.75
6
0.9
113.67x5.33
SN211
P21-122045
140
119
7.7
8.1
10.5
8
0.9
116.84x7.00
SN211
P21-122036
150
129
7.7
8.1
10.5
8
0.9
126.37x7.00
SN211
P21-122037
160
139
7.7
8.1
10.5
8
0.9
135.89x7.00
SN211
P21-122038
170
149
7.7
8.1
10.5
8
0.9
145.42x7.00
SN211
P21-122039
180
159
7.7
8.1
10.5
8
0.9
158.12x7.00
SN211
P21-122040
190
169
7.7
8.1
10.5
8
0.9
164.47x7.00
SN211
P21-122041
200
179
7.7
8.1
10.5
8
0.9
177.17x7.00
SN211
P21-122042