Company Advantages1. Dms Seals Technology Co.,limited only choose the safe material for manufacturing piston seals. High-end talents and advanced technology have enabled DMS 
o-ring seal quality to reach the industry's leading level
2. To reduce costs with high-efficiency work is the DMS's purpose. the specifications of hydraulic piston seals,pneumatic piston seals can be customized.
3.  Experiments indicated that o-ring seal with reliable performance and unique designing fashion can hydraulic piston seals sizes. The high pressure seals have strong wear resistance to hard conditions
4. Quality control of the seals is the basis for DMS Seals. Patented piston seals,hydraulic piston seals technology guarantees a flexible applicability, satisfying customers with different requirements..
5. DMS Seal manufacturer was established in 2008 and now has more than 10 years professional experience. The hydraulic piston seals,hydraulic cylinder piston seals know this fact well and offer high-quality custom o-ring seal,hydraulic piston seals suppliers.
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
Back-up ring: filled PTFE / PA
Guide ring: filled PTFE / PA
Working Conditions
| Working  Conditions | 
| Diameter Range | Pressure Range | Temperature Range | Speed | Medium | 
| 3-1600mm | 0-45MPa | -30℃+200℃ | 1 m/s | hydraulic oil, flame retardant liquid, water and others | 
Installation Dimensions
| D | d | b | d2 | d3 | a | c | f | e | Order No. | 
| 4045
 50
 | 2631
 34
 | 3232
 39
 | 3237
 42
 | 3641
 46
 | 3.53
 3
 | 15.515.5
 20.5
 | 8.258.25
 9.25
 | 77
 7
 | DDKK40*26*32DDKK45*31*32
 DDKK50*34*39
 | 
| 5660
 63
 | 4044
 47
 | 3939
 39
 | 4852
 55
 | 5256
 59
 | 33
 3
 | 20.520.5
 20.5
 | 9.259.25
 9.25
 | 77
 7
 | DDKK56*40*39DDKK60*44*39
 DDKK63*47*39
 | 
| 6570
 75
 | 4954
 59
 | 3939
 39
 | 5762
 67
 | 6166
 71
 | 33
 3
 | 20.520.5
 20.5
 | 9.259.25
 9.25
 | 77
 7
 | DDKK65*49*39DDKK70*54*39
 DDKK75*59*39
 | 
| 8085
 90
 | 6267
 72
 | 4343
 43
 | 7277
 82
 | 7681
 86
 | 33
 3
 | 22.522.5
 22.5
 | 10.2510.25
 10.25
 | 77
 7
 | DDKK80*62*43DDKK85*67*43
 DDKK90*72*43
 | 
| 95100
 105
 | 7782
 87
 | 4343
 43
 | 8792
 97
 | 9196
 101
 | 33
 3
 | 22.522.5
 22.5
 | 10.2510.25
 10.25
 | 77
 10
 | DDKK95*77*43DDKK100*82*43
 DDKK105*87*43
 | 
| 110115
 120
 | 9297
 102
 | 4343
 43
 | 102107
 112
 | 106111
 116
 | 33
 3
 | 22.522.5
 22.5
 | 10.2510.25
 10.25
 | 1010
 10
 | DDKK110*92*43DDKK115*97*43
 DDKK120*102*43
 | 
| 125130
 140
 | 103108
 118
 | 5353
 53
 | 115120
 130
 | 121126
 136
 | 44
 4
 | 26.526.5
 26.5
 | 13.2513.25
 13.25
 | 1010
 10
 | DDKK125*103*53DDKK130*108*53
 DDKK140*118*53
 | 
| 150160
 165
 | 128138
 143
 | 5353
 57
 | 140150
 155
 | 146156
 161
 | 44
 6
 | 26.526.5
 26.5
 | 13.2513.25
 15.25
 | 1010
 10
 | DDKK150*128*53DDKK160*138*53
 DDKK165*143*57
 | 
| 170180
 190
 | 148158
 165
 | 5757
 64
 | 160170
 180
 | 166176
 186
 | 66
 4.5
 | 26.526.5
 31.5
 | 15.2515.25
 16.25
 | 1010
 10
 | DDKK170*148*57DDKK180*158*57
 DDKK190*165*64
 | 
| 195200
 210
 | 170175
 185
 | 6464
 71
 | 185190
 200
 | 191196
 206
 | 4.54.5
 8
 | 31.531.5
 31.5
 | 16.2516.25
 19.75
 | 1010
 12
 | DDKK195*170*64DDKK200*175*64
 DDKK210*185*71
 | 
 DMS Seal Manufacturer is an integrated piston seals contractor integrating design, procurement and development. 
2.  Call Now! In Order To Meet The Market Demand, DMS Seal Manufacturer Will Continually Develop New hydraulic piston seals, pneumatic piston seals, hydraulic piston seals sizes. Please See More Information On Our Website. 
3.  DMS Seal Manufacturer aims to be an international o-ring seal exporter. Check it!