DMS SEALS TECHNOLOGY CO.,LIMITED
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GSI - PTFE Hydraulic Rod Seal with NBR/FKM O-Ring1
1 Installation Recommendation
2 Installation Sizes
Rod Dia meter d N h9 | Groove Diameter | Groove Width | Radius | Radial Clearance S max. | O-Ring Cross-Section | ||||
Standard Application | Light Application | Heavy Duty Application | D 1 H9 | L 1 +0.2 | R 1 | 10mpa | 20mpa | 40mpa | d 2 |
3-7.9 | 8-18.9 | - | d N +4.9 | 2.2 | 0.4 | 0.3 | 0.20 | 0.15 | 1.78 |
8-18.9 | 19-37.9 | - | d N +7.3 | 3.2 | 0.6 | 0.4 | 0.25 | 0.15 | 2.62 |
19-37.9 | 38-199.9 | 8-18.9 | d N +10.7 | 4.2 | 1.0 | 0.4 | 0.25 | 0.20 | 3.53 |
38-199.9 | 200-255.9 | 19-37.9 | d N +15.1 | 6.3 | 1.3 | 0.5 | 0.30 | 0.20 | 5.33 |
200-225.9 | 256-649.9 | 38-199.9 | d N +20.5 | 8.1 | 1.8 | 0.6 | 0.35 | 0.25 | 7.00 |
256-649.9 | 650-999.9 | 200-255.9 | d N +24.0 | 8.1 | 1.8 | 0.6 | 0.35 | 0.25 | 7.00 |
650-999.9 | ≥ 1000.0 | 256-649.9 | d N +27.3 | 9.5 | 2.5 | 0.7 | 0.50 | 0.30 | 8.40 |
≥ 1000.0 | - | 650-999.9 | d N +38.0 | 13.8 | 3.0 | 1.0 | 0.70 | 0.60 | 12.00 |
3. Application and properties
Applicable to high and low speed reciprocating motion environment , a wide range of fluids and high temperature condition. Suitable for larger gap of piston rod. Low friction, simple groove, be able to work in the medium с oil spots
Meet the standard of GB/T 15242.3.
4 Standard materials
Sealing ring: filled PTFE
O- R ing: NBR / FKM
5. Working Conditions
Working Conditions | ||||
Diameter Range | Pressure Range | Temperature Range | Speed | Medium |
3 - 1600mm | 0 - 60MPa | -45 ℃ +200 ℃ | 15 m/s | hydraulic oil, f lame retardant liquid, water, gas |
6 Installation Dimensions
Rod Dia. | Groove Dia. | Groove Width | Or der No. | O-Ring Dimensions |
D N h9 | D 1 H9 | L 1 +0.2 | ||
20 20 22 | 27.3 30.7 29.3 | 3.2 4.2 3.2 | GSI20*27.3*3.2 GSI20*30.7*4.2 GSI22*29.3*3.2 | 21.89*2.62 25.0*3.53 25.07*2.62 |
22 24 25 | 32.7 31.3 32.3 | 4.2 3.2 3.2 | GSI22*32.7*4.2 GSI24*31.3*3.2 GSI25*32.3*3.2 | 26.57*3.53 26.64*2.62 28.24*2.62 |
25 26 28 | 35.7 36.7 35.3 | 4.2 4.2 3.2 | GSI25*35.7*4.2 GSI26*36.7*4.2 GSI28*35.3*3.2 | 29.74*3.53 29.74*3.53 29.82*2.62 |
28 30 30 | 38.7 37.3 40.7 | 4.2 3.2 4.2 | GSI28*38.7*4.2 GSI30*37.3*3.2 GSI30*40.7*4.2 | 32.92*3.53 32.99*2.62 34.52*3.53 |
32 32 35 | 39.3 42.7 42.3 | 3.2 4.2 3.2 | GSI32*39.3*3.2 GSI32*42.7*4.2 GSI35*42.3*3.2 | 34.59*2.62 36.09*3.53 37.77*2.62 |
35 36 36 | 45.7 43.3 46.7 | 4.2 3.2 4.2 | GSI35*45.7*4.2 GSI36*43.3*3.2 GSI36*46.7*4.2 | 37.69*3.53 39.34*2.62 40.87*3.53 |
38 38 40 | 48.7 53.1 50.7 | 4.2 6.3 4.2 | GSI38*48.7*4.2 GSI38*53.1*6.3 GSI40*50.7*4.2 | 40.87*3.53 43.82*5.33 44.04*3.53 |
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