Company Advantages1. With the widely raw materials and pneumatic piston seals, this piston seals is worth expanding and application. DMS Seals' production equipment and test equipment are on the leading level in the industry
2. hydraulic piston seals is available for hydraulic piston seals sizes and international certificate as hydraulic piston seals.Quality control of the seals is the basis for DMS Seals
3. o-ring seal is integrated the functions of hydraulic cylinder piston seals. High-end talents and advanced technology have enabled DMS o-ring seal quality to reach the industry's leading level
4. The operation of our piston seals is very simple, even inexperienced worker can learn it in short time. DMS Seals provides professional design and production of high-grade o-ring seals.
5. We use our knowledge, market maps and expertise to identify hydraulic piston seals developments for your product and objectively track it throughout its entire product lifecycle, looking for a unique set of potential growth opportunity areas. DMS Seals manufacturer owns a team of professional R&D group and skilled technicians
Installation Recommendation
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Installation Sizes
| Bore Diameter                         DN H9 | Groove Diameter | Groove Width | Radius | Radial Clearance                S max. | O-Ring Cross-Section | 
| Standard Application | Light Application | Heavy Duty Application | d1 h9 | L1+0.2 | R1 | 10MPa | 20MPa | 40MPa | d2 | 
| 8-14.9 | 15-39.9 | - | DN-4.9 | 2.2 | 0.4 | 0.3 | 0.20 | 0.15 | 1.78 | 
| 15-39.9 | 40-79.9 | - | DN-7.5 | 3.2 | 0.6 | 0.4 | 0.25 | 0.15 | 2.62 | 
| 40-79.9 | 80-132.9 | 15-39.9 | DN-11.0 | 4.2 | 1.0 | 0.4 | 0.25 | 0.20 | 3.53 | 
| 80-132.9 | 133-329.9 | 40-79.9 | DN-15.5 | 6.3 | 1.3 | 0.5 | 0.30 | 0.20 | 5.33 | 
| 133-329.9 | 330-699.9 | 80-132.9 | DN-21.0 | 8.1 | 1.8 | 0.6 | 0.35 | 0.25 | 7.00 | 
| 330-669.9 | 670-99.9 | 133-329.9 | DN-24.5 | 8.1 | 1.8 | 0.6 | 0.35 | 0.25 | 7.00 | 
| 670-999.9 | ≥1000 | 330-669.9 | DN-28.0 | 9.5 | 2.5 | 0.7 | 0.50 | 0.30 | 8.40 | 
| ≥1000 | ≥1000 | ≥1000 | DN-38.0 | 13.8 | 3.0 | 1.0 | 0.70 | 0.60 | 12.00 | 
Application and properties
Standard double acting seal. Suitable for reciprocating motion, allowing larger extrusion clearances, has wide application. Dynamic and static sealing property are excellent, be able to work in dusty condition. Low friction, simple groove, strong adaptability to work conditions.
Sealing ring: filled PTFE
O-ring: NBR / FKM
Working Conditions
| Working  Conditions | 
| Diameter Range | Pressure Range | Temperature Range | Speed | Medium | 
| 3-1600mm | 0-60MPa | -45℃ +200℃ | 15 m/s | hydraulic oil, flame retardant liquid, water and others | 
Installation Dimensions
| Bore Dia.  | Groove Dia.  | Groove Width  | Order No.  | O-Ring Dimensions  | 
| DN H9  | d1 h9  | L1+0.2  | 
| 810
 12
 | 3.15.1
 7.1
 | 2.22.2
 2.2
 | GSF8*3.1*2.2GSF10*5.1*2.2
 GSF12*7.1*2.2
 | 2.90*1.784.80*1.8
 6.70*1.8
 | 
| 1415
 15
 | 9.110.1
 7.5
 | 2.22.2
 3.2
 | GSF14*9.1*2.2GSF15*10.1*2.2
 GSF15*7.5*3.2
 | 8.75*1.87.59*2.62
 8.75*1.8
 | 
| 1616
 18
 | 11.18.5
 13.1
 | 2.23.2
 2.2
 | GSF16*11.1*2.2GSF16*8.5*3.2
 GSF18*13.1*2.2
 | 10.82*1.787.59*2.62
 12.42*1.78
 | 
| 1820
 20
 | 10.515.1
 12.5
 | 3.22.2
 3.2
 | GSF18*10.5*3.2GSF20*15.1*2.2
 GSF20*12.5*3.2
 | 9.19*2.6214.00*1.78
 12.37*2.62
 | 
| 2424
 25
 | 19.116.5
 17.5
 | 2.23.2
 3.2
 | GSF24*19.1*2.2GSF24*16.5*3.2
 GSF25*17.5*3.2
 | 18.77*1.7815.54*2.62
 17.12*2.62
 | 
| 2528
 28
 | 1420.5
 17
 | 4.23.2
 4.2
 | GSF25*14*4.2GSF28*20.5*3.2
 GSF28*17*4.2
 | 13.87*3.5320.29*2.62
 15.47*3.53
 | 
| 3030
 32
 | 22.519
 24.5
 | 3.24.2
 3.2
 | GSF30*22.5*3.2GSF30*19*4.2
 GSF32*24.5*3.2
 | 21.89*2.6226.70*1.78
 23.47*2.62
 | 
| 3235
 35
 | 2127.5
 24
 | 4.23.2
 4.2
 | GSF32*21*4.2GSF35*27.5*3.2
 GSF35*24*4.2
 | 20.22*3.5326.64*2.62
 23.40*3.53
 | 
| 3636
 38
 | 28.525
 30.5
 | 3.24.2
 3.2
 | GSF36*28.5*3.2GSF36*25*4.2
 GSF38*30.5*3.2
 | 28.24*2.6223.39*3.53
 29.82*2.62
 | 
| 3840
 40
 | 2732.5
 29
 | 4.23.2
 4.2
 | GSF38*27*4.2GSF40*32.5*3.2
 GSF40*29*4.2
 | 25.86*3.5331.42*2.62
 28.17*3.53
 | 
| 4545
 48
 | 37.534
 40.5
 | 3.24.2
 3.2
 | GSF45*37.5*3.2GSF45*34*4.2
 GSF48*40.5*3.2
 | 36.5*2.6232.92*3.53
 36.09*3.53
 | 
| 4850
 50
 | 3739
 34.5
 | 4.24.2
 6.3
 | GSF48*37*4.2GSF50*39*4.2
 GSF50*34.5*6.3
 | 36.09*3.5337.70*3.53
 32.69*5.33
 | 
| 5252
 55
 | 4136.5
 44
 | 4.26.3
 4.2
 | GSF52*41*4.2GSF52*36.5*6.3
 GSF55*44*4.2
 | 40.87*3.5335*5.33
 44.04*3.53
 | 
| 5556
 56
 | 39.545
 40.5
 | 6.34.2
 6.3
 | GSF55*39.5*6.3GSF56*45*4.2
 GSF56*40.5*6.3
 | 38*5.3344.04*3.53
 39*5.33
 | 
| 6060
 63
 | 4944.5
 52
 | 4.26.3
 4.2
 | GSF60*49*4.2GSF60*44.5*6.3
 GSF63*52*4.2
 | 47.22*3.5342.5*5.33
 50.39*3.53
 | 
| 6364
 64
 | 47.553
 48.5
 | 6.34.2
 6.3
 | GSF63*47.5*6.3GSF64*53*4.2
 GSF64*48.5*6.3
 | 46*5.3351.5*3.53
 46.99*5.33
 | 
| 6565
 70
 | 5449.5
 59
 | 4.26.3
 4.2
 | GSF65*54*4.2GSF65*49.5*6.3
 GSF70*59*4.2
 | 53.57*3.5348*5.33
 56.74*3.53
 | 
| 7075
 75
 | 54.564
 59.5
 | 6.34.2
 6.3
 | GSF70*54.5*6.3GSF75*64*4.2
 GSF75*59.5*6.3
 | 53.34*5.3363.09*3.53
 56.52*5.33
 | 
| 8080
 85
 | 6964.5
 74
 | 4.26.3
 4.2
 | GSF80*69*4.2GSF80*64.5*6.3
 GSF85*74*4.2
 | 66.27*3.5362.87*5.33
 72.62*3.53
 | 
| 8590
 90
 | 69.579
 74.5
 | 6.34.2
 6.3
 | GSF85*69.5*6.3GSF90*79*4.2
 GSF90*74.5*6.3
 | 69.22*5.3378.97*3.53
 72.39*5.33
 | 
| 9595
 100
 | 8479.5
 89
 | 4.26.3
 4.2
 | GSF95*84*4.2GSF95*79.5*6.3
 GSF100*89*4.2
 | 82.14*3.5378.74*5.33
 88.49*3.53
 | 
| 100105
 105
 | 84.594
 89.5
 | 6.34.2
 6.3
 | GSF100*84.5*6.3GSF105*94*4.2
 GSF105*89.5*6.3
 | 81.92*5.3391.67*3.53
 88.27*5.33
 | 
 Our strong technology strength and experienced team will facility the quality assurance of piston seals.
2.  DMS Seal Manufacturer puts hydraulic piston seals first all the time. Contact!