Company Advantages1. DMS Seals takes the lead in grasping the development trend of the industry. As one of the unique feature, pneumatic piston seals successfully makes hydraulic piston seals sizes more popular among customers. DMS Seals takes the lead in grasping the development trend of the industry
2. Dms Seals Technology Co.,limited, well-known for its superior quality, will provide first-class service. High-end talents and advanced technology have enabled DMS o-ring seal quality to reach the industry's leading level
3. DMS Seals implements and optimizes its quality control systems, DMS Seal Manufacturer Has Many Years' Experience In piston seals, hydraulic piston seals Design And Manufacturing.
4. The R&D teams have the ability to design and develop seals for various of complicated working condition of sealing system. hydraulic cylinder piston seals produced by our advanced technology guarantees the long lifespan of hydraulic piston seals,hydraulic piston seals suppliers.
5. Seal we produced has applications in a wide range of fields. With the unique o-ring seal,rubber piston seals,our product is better with it.
Installation Recommendation

Application and properties
Standard double acting sealing, a wide range of applications. Friction resistance is very low, no crawling phenomenon, strong wear resistance, and saving installation space.
Sealing ring: filled PTFE
O-Ring: NBR / FKM
Working Conditions
Working Conditions |
Diameter Range | Pressure Range | Temperature Range | Speed | Medium |
3-1600mm | 0-35MPa | -30℃+200℃ | 1.5 m/s | hydraulic oil, flame retardant liquid, water and others. |
Installation Dimensions
Nominal Size of Packing, and Housing dimensions | L +0.2 | Order No. |
d | D | H |
30 31.5 32 | 20.5 22 22.5 | 4.3 4.3 4.3 | 4.5 4.5 4.5 | SPG30*20.5*4.5 SPG31.5*22*4.5 SPG32*22.5*4.5 |
35 35.5 40 | 25.5 26 30 | 4.3 4.3 4.3 | 4.5 4.5 4.5 | SPG35*25.5*4.5 SPG35.5*26*4.5 SPG40*30*4.5 |
45 50 55 | 35 40 45 | 4.3 4.3 4.3 | 4.5 4.5 4.5 | SPG45*35*4.5 SPG50*40*4.5 SPG55*45*4.5 |
56 60 63 | 46 50 48 | 4.3 4.3 7.3 | 4.5 4.5 7.5 | SPG56*46*4.5 SPG60*50*4.5 SPG63*48*7.5 |
65 69 70 | 50 54 55 | 7.3 7.3 7.3 | 7.5 7.5 7.5 | SPG65*50*7.5 SPG69*54*7.5 SPG70*55*7.5 |
71 75 80 | 56 60 65 | 7.3 7.3 7.3 | 7.5 7.5 7.5 | SPG71*56*7.5 SPG75*60*7.5 SPG80*65*7.5 |
85 90 95 | 70 75 80 | 7.3 7.3 7.3 | 7.5 7.5 7.5 | SPG85*70*7.5 SPG90*75*7.5 SPG95*80*7.5 |
100 105 108 | 85 90 92 | 7.3 7.3 7.3 | 7.5 7.5 7.5 | SPG100*85*7.5 SPG105*90*7.5 SPG108*92*7.5 |
110 112 120 | 94 96 104 | 7.3 7.3 7.3 | 7.5 7.5 7.5 | SPG110*94*7.5 SPG112*96*7.5 SPG120*104*7.5 |
125 130 135 | 109 114 119 | 7.3 7.3 7.3 | 7.5 7.5 7.5 | SPG125*109*7.5 SPG130*114*7.5 SPG135*119*7.5 |
140 145 150 | 124 129 134 | 7.3 7.3 7.3 | 7.5 7.5 7.5 | SPG140*124*7.5 SPG145*129*7.5 SPG150*134*7.5 |
155 160 170 | 139 144 148 | 7.3 7.3 10.8 | 7.5 7.5 11 | SPG155*139*7.5 SPG160*144*7.5 SPG170*148*11 |
Company Features1. There is strict testing for quality of piston seals to make satisfying products for customers.
2. Our hydraulic piston seals have been well sold to all over the world known as its pneumatic piston seals. Welcome to visit our factory!