Company Advantages1. To ensure piston seals is standard on pneumatic piston seals. We have developed solutions of the sealing of special working condition
2. DMS 
o-ring seal has advanced machines and equipment for its production. DMS Seal Manufacturer's competitive advantage is bound up with its history and has matched to hydraulic piston seals,hydraulic piston seals sizes market opportunity.
3. DMS Seal manufacturer was established in 2008 and now has more than 10 years professional experience, We Provides And Tailor Makes A Full Line Of o-ring seal, hydraulic piston seals With Many Special Designs.
| Bore Dia. | Groove Dia. | Width | Order No.  | O-ring Dimension | 
| D H9 | d1 h9 | L1+0.2 | 
| 910
 12
 | 4.15.1
 7.1
 | 2.22.2
 2.2
 | GSD9*4.1*2.2GSD10*5.1*2.2
 GSD12*7.1*2.2
 | 3.68*1.784.80*1.8
 6.70*1.8
 | 
| 1518
 20
 | 10.110.7
 15.1
 | 2.23.2
 2.2
 | GSD15*10.1*2.2GSD18*10.7*3.2
 GSD20*15.1*2.2
 | 9.25*1.789.19*2.62
 14.0*1.78
 | 
| 2022
 25
 | 12.714.7
 17.7
 | 3.23.2
 3.2
 | GSD20*12.7*3.2GSD22*14.7*3.2
 GSD25*17.7*3.2
 | 12.37*2.6213.94*2.62
 17.12*2.62
 | 
| 2728
 30
 | 16.317.3
 19.3
 | 4.24.2
 4.2
 | GSD27*16.3*4.2GSD28*17.3*4.2
 GSD30*19.3*4.2
 | 15.47*3.5316.4*3.53
 18.66*3.53
 | 
| 3232
 35
 | 24.721.3
 24.3
 | 3.24.2
 4.2
 | GSD32*24.7*3.2GSD32*21.3*4.2
 GSD35*24.3*4.2
 | 23.47*2.6220.22*3.53
 23.40*3.53
 | 
| 3638
 40
 | 25.327.3
 32.7
 | 4.24.2
 3.2
 | GSD36*25.3*4.2GSD38*27.3*4.2
 GSD40*32.7*3.2
 | 24*3.5326*3.53
 31.42*2.62
 | 
| 4045
 48
 | 29.934.3
 37.3
 | 4.24.2
 4.2
 | GSD40*29.3*4.2GSD45*34.3*4.2
 GSD48*37.3*4.2
 | 28.17*3.5332.92*3.53
 36.09*3.53
 | 
| 5050
 52
 | 39.334.9
 41.3
 | 4.26.3
 4.2
 | GSD50*39.3*4.2GSD50*34.9*6.3
 GSD52*41.3*4.2
 | 37.70*3.5332.69*5.33
 40.87*3.53
 | 
| 5560
 63
 | 44.344.9
 52.3
 | 4.26.3
 4.2
 | GSD55*44.3*4.2GSD60*44.9*6.3
 GSD63*52.3*4.2
 | 44.04*3.5343.82*5.33
 50.39*3.53
 | 
| 6364
 65
 | 47.948.9
 49.9
 | 6.36.3
 6.3
 | GSD63*47.9*6.3GSD64*48.9*6.3
 GSD65*49.9*6.3
 | 46.99*5.3346.99*5.33
 46.99*5.33
 | 
| 7070
 75
 | 59.354.9
 59.9
 | 4.26.3
 6.3
 | GSD70*59.3*4.2GSD70*54.9*6.3
 GSD75*59.9*6.3
 | 56.74*3.5353.34*5.33
 56.52*5.33
 | 
| 8080
 85
 | 64.959.5
 69.9
 | 6.38.1
 6.3
 | GSD80*64.9*6.3GSD80*59.5*8.1
 GSD85*69.9*6.3
 | 62.87*5.3358*7.0
 69.22*5.33
 | 
| 9090
 95
 | 74.969.5
 79.9
 | 6.38.1
 6.3
 | GSD90*74.9*6.3GSD90*69.5*8.1
 GSD95*79.9*6.3
 | 72.39*5.3368*7.0
 78.74*5.33
 | 
| 95100
 100
 | 74.584.9
 79.5
 | 8.16.3
 8.1
 | GSD95*74.5*8.1GSD100*84.9*6.3
 GSD100*79.5*8.1
 | 73*7.081.92*5.33
 78*7.0
 | 
| 110120
 125
 | 94.9104.9
 104.5
 | 6.36.3
 6.3
 | GSD110*94.9*6.3GSD120*104.9*6.3
 GSD125*109.9*6.3
 | 91.44*5.33104.14*5.33
 107.32*5.33
 | 
| 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 | 
| 8-16.9 | 17-26.9 | -- | DN-4.9 | 2.2 | 0.4 | 0.30 | 0.20 | 0.15 | 1.78 | 
| 17-26.9 | 27-59.9 | -- | DN-7.3 | 3.2 | 0.6 | 0.40 | 0.25 | 0.15 | 2.62 | 
| 27-59.9 | 60-199.9 | 17-26.9 | DN-10.7 | 4.2 | 1.0 | 0.50 | 0.30 | 0.20 | 3.53 | 
| 60-199.9 | 200-255.9 | 27-59.9 | DN-15.1 | 6.3 | 1.3 | 0.70 | 0.40 | 0.25 | 5.33 | 
| 200-255.9 | 256-669.9 | 60-199.9 | DN-20.5 | 8.1 | 1.8 | 0.80 | 0.60 | 0.35 | 7.00 | 
| 256-669.9 | 670-999.9 | 200-669.9 | DN-24.0 | 8.1 | 1.8 | 0.90 | 0.70 | 0.40 | 7.00 | 
| 670-999.9 | -- | 256-669.9 | DN-28.0 | 9.5 | 2.5 | 1.00 | 0.80 | 0.60 | 8.40 | 
| -- | 1000-2000 | -- | DN-28.0 | 9.5 | 2.5 | 1.00 | 0.80 | 0.60 | 8.40 | 
| -- | -- | 670-999.9 | DN-38.0 | 13.8 | 3.0 | 1.20 | 0.90 | 0.60 | 12.00 | 
| 1000-2700 | -- | -- | DN-38.0 | 13.8 | 3.0 | 1.20 | 0.90 | 0.60 | 12.00 | 
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| 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 | 
![undefined undefined]() Company Features1.
Company Features1. Dms Seals Technology Co.,limited holds a paramount position in Chinese piston seals market. - Our workers are regularly trained to produce high quality hydraulic piston seals.
2.  Dms Seals Technology Co.,limited has in-depth deployment of nation-wide specialized and large-scale o-ring seal production bases.
3.  Offered product range is fabricated from optimum quality raw material that renders superior strength and durability. - Such business principles and strategic guidelines as pneumatic piston seals have been formed through the course of Dms Seals Technology Co.,limited's development. Ask!