Piston U-Ring Set P36

DESCRIPTION
Single acting Piston U-Ring Set P36 has asymmetrical profile and shortened outer lip and fabric reinforcement on the dynamic sealing side and an active back-up ring for gap closing. Piston Seal set P36 can be installed in “back-to-back” position in double-acting piston design with pressure on both sides.

Low friction due to fabric reinforcement, wide operating temperature range, easy instalation in closed groove and material FPM in black or brown color are significiant advantages of this Set.

APPLICATION
Earth moving equipment
Special hydraulic cylinders.
Truck tail lift
Presses
Industrial wehicles
Mobile hydraulics

MATERIAL

Standard material
Material set code SN218 SF266
Material base NBR 80 Shore A FPM 80 Shore A
Fabric Cotton Cotton
Back-up ring Acetal resine (POM) PTFE compound

For very low temperature applications up to -60 C, or excellent medium-rubber compatybility in special applications a few materials are recommended and available on request

OPERATING CONDITIONS

Pressure, Speed
Working pressure, P 40 Mpa
Running speed, v 0,5 m/s
Medium; Working Temperature
Material set code SN218 SF266
Hydraulic oils HL, HLP -30 to 100˚C -15 to +150˚C
HFA, HFB fluids +5 to +60˚C –
HFC fluids -30 to +60˚C –
HFD fluids – -15 to +150˚C
Water +5 to +90˚C –
Mineral greases -30 to +90˚C -15 to +150˚C

DESIGN RECOMMENDATION

Max. permissible gap dimension, emax
Max pressure ØD ≤ 80 ØD > 80
16 Mpa 0,60 0,65
26 Mpa 0,50 0,55
32 Mpa 0,40 0,45
40 Mpa 0,35 0,40
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
Reset Apply
ØD
Ød
H
L
S
Ød1
C
Material
Order code
Sing in
100
75
15
16
12.5
87.5
6.5
SF266
P36-211062
100
80
12
13
10
90
6
SF266
P36-211063
110
90
12
13
10
100
6
SF266
P36-211064
115
90
15
16
12.5
102.5
6.5
SF266
P36-211065
120
100
12
13
10
110
6
SF266
P36-211066
125
100
15
16
12.5
112.5
6.5
SF266
P36-211067
125
105
12
13
10
115
6
SF266
P36-211068
140
120
12
13
10
130
6
SF266
P36-211069
150
125
15
16
12.5
137.5
6.5
SF266
P36-211070
160
130
18
19
15
145
7.5
SF266
P36-211071
160
135
15
16
12.5
147.5
6.5
SF266
P36-211072
180
150
18
19
15
165
7.5
SF266
P36-211073
200
170
18
19
15
185
7.5
SF266
P36-211074
200
175
15
16
12.5
187.5
6.5
SF266
P36-211075
220
190
18
19
15
205
7.5
SF266
P36-211076
220
195
15
16
12.5
207.5
6.5
SF266
P36-211077
250
215
20
21
17.5
232.5
10
SF266
P36-211078
250
225
19
20
12.5
237.5
6.5
SF266
P36-211080
250
220
18
19
15
235
7.5
SF266
P36-211079
280
250
18
19
15
265
7.5
SF266
P36-211081
300
270
19
20
15
285
7.5
SF266
P36-211082
320
280
23
24
20
300
11
SF266
P36-211083
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