Piston Seal P12

DESCRIPTION
Piston seal P12 is a two-way seal for heavy-duty applications.
It consists of one sliding ring made of PTFE, one preloading element made of rubber, and two rings for protection against extrusion into the gap made of POM material.
This seal is characterized by high pressure resistance up to 60 MPa, good extrusion protection even with large gaps, high resistance to abrasion and low friction without stick-slip effect.

APPLICATION
Earth moving equipment
Excavators
Lifting machines
Industrial vehicles
Presses
Heavy duty cylinders

MATERIAL

Standard material
Material Set Code SN121 SN221
NBR 85 ShA N4280 N5180
PTFE Bronze T1004 ‘T1004
POM P6221 P6221

OPERATING CONDITIONS

Pressure, Speed
Working pressure, max 50 Mpa 50 Mpa
Running speed v,max 1,5 m/s 1,5 m/s
Medium, Working Temperature
Material Set Code SN121 SN221
Hydraulic oils: HL, HLP -30.. +100 ˚C -50.. +80 ˚C
Mineral greases -30.. +100 ˚C -50.. +80 ˚C

DESIGN RECOMMENDATION

Max. admissible gap , emax, mm
Profil Size Max operating pressure
S mm 16 MPa 26 MPa 32 Mpa 40 Mpa
7 0,8 0,7 0,5 0,3
7,5 0,9 0,8 0,5 0,3
11,5 1 0,9 0,6 0,4
Surface finish*
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%

Profile size, S, mm Lead-in chmfers, C, mm
7 6
7.5 7
11.5 9
ØD
Ød
H
L
Material
Filters Sort results
Reset Apply
ØD
Ød
H
L
Material
Order code
50
36
8.5
9
SN121
P12-215050
55
41
8.5
9
SN121
P12-215051
60
46
8.5
9
SN121
P12-215052
63
58
10.5
11
SN121
P12-215053
65
50
10.5
11
SN121
P12-215054
70
55
10.5
11
SN121
P12-215055
75
60
10.5
11
SN121
P12-215056
80
65
10.5
11
SN121
P12-215057
85
70
10.5
11
SN121
P12-215058
90
75
10.5
11
SN121
P12-215059
95
80
10.5
12.5
SN121
P12-215060
100
85
12
12.5
SN121
P12-215061
105
90
12
12.5
SN121
P12-215062
110
95
12
12.5
SN121
P12-215063
115
100
12
12.5
SN121
P12-215064
120
105
12
12.5
SN121
P12-215065
125
102
15.5
16
SN121
P12-215066
130
107
15.5
16
SN121
P12-215067
135
112
15.5
16
SN121
P12-215068
140
117
15.5
16
SN121
P12-215069
145
122
15.5
16
SN121
P12-215070
150
127
15.5
16
SN121
P12-215071
155
132
15.5
16
SN121
P12-215072
160
137
15.5
16
SN121
P12-215073
165
142
15.5
16
SN121
P12-215074
170
147
15.5
16
SN121
P12-215075
180
157
15.5
16
SN121
P12-215076
200
177
15.5
16
SN121
P12-215077
50
36
8.5
9
SN221
P12-215126
55
41
8.5
9
SN221
P12-215127
60
46
8.5
9
SN221
P12-215128
63
48
10.5
11
SN221
P12-215129
65
50
10.5
11
SN221
P12-215130
70
55
10.5
11
SN221
P12-215131
75
60
10.5
11
SN221
P12-215132
80
65
10.5
11
SN221
P12-215133
85
70
10.5
11
SN221
P12-215134
90
75
10.5
11
SN221
P12-215135
95
80
10.5
12.5
SN221
P12-215136
100
85
12
12.5
SN221
P12-215137
105
90
12
12.5
SN221
P12-215138
110
95
12
12.5
SN221
P12-215139
115
100
12
12.5
SN221
P12-215140
120
105
12
12.5
SN221
P12-215141
125
102
15.5
16
SN221
P12-215142
130
107
15.5
16
SN221
P12-215143
135
112
15.5
16
SN221
P12-215144
140
117
15.5
16
SN221
P12-215145
145
122
15.5
16
SN221
P12-215146
150
127
15.5
16
SN221
P12-215147
12