Company Advantages1. DMS Seal manufacturer provides good quality and competitive price hydraulic seals. As one of the unique feature, pneumatic piston seals successfully makes hydraulic piston seals sizes more popular among customers. DMS Seal manufacturer provides good quality and competitive price hydraulic seals
2. Dms Seals Technology Co.,limited, well-known for its superior quality, will provide first-class service. We can support OEM and ODM
3. piston seals's popularity has close relation with the its features such as hydraulic piston seals. High-end talents and advanced technology have enabled DMS 
o-ring seal quality to reach the industry's leading level
4. hydraulic cylinder piston seals's high performance can meet the requirements of many special industries for hydraulic piston seals. The high pressure seals have strong wear resistance to hard conditions
Installation Recommendation
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Application and properties
Apply to cylinder piston,Consisting of a seal ring, an O-Ring, a pair of retaining rings and a pair of guide sleeves. 
The seal ring and cylinder bore conforming to be a symmetric section to achieve the sealing performance, with double acting sealing performance.
Sealing ring: filled PTFE
O-Ring: NBR / FKM
Guide ring: filled PTFE / PA
Working Conditions
| Working  Conditions | 
| Diameter Range | Pressure Range | Temperature Range | Speed | Medium | 
| 3-1600mm | 0-45MPa | -30℃+100℃ | 1 m/s | hydraulic oil, water and emulsion | 
Installation Dimensions
| D | d | b | d2 | d3 | a | c | f | e | Order No. | 
| 4045
 50
 | 2631
 34
 | 3030
 32
 | 3237
 42
 | 3641
 46
 | 3.53
 3
 | 15.515.5
 20.5
 | 7.257.25
 5.8
 | 77
 7
 | DKDF40*26*30DKDF45*31*30
 DKDF50*34*32
 | 
| 5660
 63
 | 4044
 47
 | 3232
 32
 | 4852
 55
 | 5256
 59
 | 33
 3
 | 20.520.5
 20.5
 | 5.85.8
 5.8
 | 77
 7
 | DKDF56*40*32DKDF60*44*32
 DKDF63*47*32
 | 
| 6570
 75
 | 4954
 59
 | 3232
 32
 | 5762
 67
 | 6166
 71
 | 33
 3
 | 20.520.5
 20.5
 | 5.85.8
 5.8
 | 77
 7
 | DKDF65*49*32DKDF70*54*32
 DKDF75*59*32
 | 
| 8085
 90
 | 6267
 72
 | 3636
 36
 | 7277
 82
 | 7681
 86
 | 33
 3
 | 22.522.5
 22.5
 | 6.86.8
 6.8
 | 77
 7
 | DKDF80*62*36DKDF85*67*36
 DKDF90*72*36
 | 
| 95100
 105
 | 7782
 87
 | 3636
 36
 | 8792
 97
 | 9196
 101
 | 33
 3
 | 22.522.5
 22.5
 | 6.86.8
 6.8
 | 77
 10
 | DKDF95*77*36DKDF100*82*36
 DKDF105*87*36
 | 
| 110115
 120
 | 9297
 102
 | 3636
 36
 | 102107
 112
 | 106111
 116
 | 33
 3
 | 22.522.5
 22.5
 | 6.86.8
 6.8
 | 1010
 10
 | DKDF110*92*36DKDF115*97*36
 DKDF120*102*36
 | 
| 125130
 135
 | 103108
 113
 | 4343
 43
 | 115120
 125
 | 121126
 131
 | 44
 4
 | 26.526.5
 26.5
 | 8.38.3
 8.3
 | 1010
 10
 | DKDF125*103*43DKDF130*108*43
 DKDF135*113*43
 | 
| 140145
 150
 | 118123
 128
 | 4343
 43
 | 130135
 140
 | 136141
 146
 | 44
 4
 | 26.526.5
 26.5
 | 8.38.3
 8.3
 | 1010
 10
 | DKDF140*118*43DKDF145*123*43
 DKDF150*128*43
 | 
| 155160
 170
 | 133138
 148
 | 4343
 48
 | 145150
 160
 | 151156
 166
 | 44
 6
 | 26.526.5
 26.5
 | 8.38.3
 10.8
 | 1010
 10
 | DKDF155*133*43DKDF160*138*43
 DKDF170*148*48
 | 
| 180190
 195
 | 158165
 170
 | 4848
 48
 | 170180
 185
 | 176186
 191
 | 64.5
 4.5
 | 26.531.5
 31.5
 | 10.88.3
 8.3
 | 1010
 10
 | DKDF180*158*48DKDF190*165*48
 DKDF195*170*48
 | 
| 200210
 220
 | 175185
 195
 | 4858
 58
 | 190200
 210
 | 196206
 216
 | 4.58
 8
 | 31.531.5
 31.5
 | 8.313.3
 13.3
 | 1012
 12
 | DKDF200*175*48DKDF210*185*58
 DKDF220*195*58
 | 
| 235240
 250
 | 210215
 225
 | 74
 74
 | 225230
 240
 | 231236
 246
 | 1515
 15
 | 31.531.5
 31.5
 | 21.321.3
 21.3
 | 1212
 12
 | DKDF235*210*74DKDF240*215*74
 DKDF250*225*74
 | 
| 265270
 275
 | 240245
 250
 | 7474
 74
 | 255260
 265
 | 261266
 271
 | 1515
 15
 | 31.531.5
 31.5
 | 21.321.3
 21.3
 | 1212
 12
 | DKDF265*240*74DKDF270*245*74
 DKDF275*250*74
 | 
 Fully specialized in the R&D and production of piston seals, Dms Seals Technology Co.,limited is globally recognized.
2.  There is strict testing for quality of hydraulic piston seals to make satisfying products for customers.
3.  Our o-ring seal have been well sold to all over the world known as its pneumatic piston seals. Please contact us!