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shirmeyx@dshseals.com
Hydraulic seals, Piston Seals , Oil Seals Manufacturer Supplier for over 20 years .
A double-acting O-Ring energized seal developed for sealing between two media such as fluid and gas. It incorporates a limited footprint quad-ring Seal inset into the dynamic sealing face. Installed in grooves. Applied to mobile hydraulics, holding cylinders, piston accumulators, etc.
DQF combines the characteristics of low friction, high pressure, and high speed seals, as well as the excellent sealing of rubber elastomers. Therefore, it is suitable for working at high speeds, high pressures and under pressure.
It can be used as a double-acting piston accumulator to control and guide the cylinder sealing elements. Suitable for machine tools, presses, rolling mills, accumulators and lifting cylinders.
Recommended for certain heavy duty and large diameter applications.
Characteristics
Low friction and high elasticity, double guarantee
High sealing effect in fluid/fluid or fluid/gas
Low gas permeability
Excellent sliding properties, no stick-slip behavior
Can be used under high pressure conditions, good sliding performance
Simple groove design
Simple installation
◆◆ PTFE+NBR/FKM
| Material description | PTFE filled Bronze, PTFE filled carbon fiber and MoS2, PTFE filled Graphite, PTFE filled PI, PTFE filled Ekonol and so on. |
| Available Color | Black, green, coffee, white, red, blue, gold and so on |
| Material Strength | High precision, excellent wear resistance, good self-lubricating performance, environmental protection. |
| temperature | -45~+200℃ |
| speed | ≤3m/s |
| pressure | ≤60MPa |
| Medium： | Mineral oil based hydraulic fluids,barely flammable hydraulic fluids,water,air and others. |
| Applied device | Mobile hydraulics / Holding cylinders/Piston accumulators, etc. |
◆◆ Piston Seals – DQF
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| Technical Data | |||||||||||
| Pressure | Temperature | Sliding speed | Medium | ||||||||
| Standard | ≤60 MPa | -45…+200 ℃ | ≤3 m/s | ineral oil based hydraulic fluids,barely flammable hydraulic fluids, water,air and others. | |||||||
| Material | |||||||||||
| O ring & X ring | slide ring | ||||||||||
| Standard | NBR | PTFE-Bronze | |||||||||
| Special(on request) | FKM | PTFE-Carbon | |||||||||
| Pressure | 160bar | 200bar | 300bar | ||||||||
| Max Gap E | E≤0.6mm | E≤0.4mm | E≤0.3mm | ||||||||
| Order Example for standard version: | |||||||||||
| Diameter D=100mm | |||||||||||
| Order Code: DQF100*87*8.3 | |||||||||||
| Installation Dimension table based on Metric Size(mm) | |||||||||||
| D H9 | d h9 | L +0.2 | d1 | d2 | R1 | C≥ | |||||
| 40~79 | D-10 | 6.3 | 2.62 | 1.78 | 0.6 | 4 | |||||
| 80~133 | D-13 | 8.3 | 3.53 | 2.62 | 1.0 | 4 | |||||
| 135~462 | D-18 | 12.3 | 5.33 | 3.53 | 1.3 | 6 | |||||
| 465~700 | D-31 | 16.3 | 6.99 | 5.33 | 1.8 | 7.5 | |||||
| Order Number | D H9 | d h9 | L +0.2 | Order Number | D H9 | d h9 | L +0.2 | |
| DQF0400 | 40 | 30 | 6.3 | DQF1500 | 150 | 132 | 12.3 | |
| DQF0420 | 42 | 32 | 6.3 | DQF1600 | 160 | 142 | 12.3 | |
| DQF0450 | 45 | 35 | 6.3 | DQF1700 | 170 | 152 | 12.3 | |
| DQF0480 | 48 | 38 | 6.3 | DQF1800 | 180 | 162 | 12.3 | |
| DQF0500 | 50 | 40 | 6.3 | DQF1900 | 190 | 172 | 12.3 | |
| DQF0520 | 52 | 42 | 6.3 | DQF2000 | 200 | 182 | 12.3 | |
| DQF0550 | 55 | 45 | 6.3 | DQF2100 | 210 | 192 | 12.3 | |
| DQF0600 | 60 | 50 | 6.3 | DQF2200 | 220 | 202 | 12.3 | |
| DQF0630 | 63 | 53 | 6.3 | DQF2300 | 230 | 212 | 12.3 | |
| DQF0650 | 65 | 55 | 6.3 | DQF2400 | 240 | 222 | 12.3 | |
| DQF0700 | 70 | 60 | 6.3 | DQF2500 | 250 | 232 | 12.3 | |
| DQF0750 | 75 | 65 | 6.3 | DQF2600 | 260 | 242 | 12.3 | |
| DQF0800 | 80 | 67 | 8.3 | DQF2700 | 270 | 252 | 12.3 | |
| DQF0850 | 85 | 72 | 8.3 | DQF2800 | 280 | 262 | 12.3 | |
| DQF0900 | 90 | 77 | 8.3 | DQF3000 | 300 | 282 | 12.3 | |
| DQF0950 | 95 | 82 | 8.3 | DQF3200 | 320 | 302 | 12.3 | |
| DQF1000 | 100 | 87 | 8.3 | DQF3500 | 350 | 332 | 12.3 | |
| DQF1050 | 105 | 92 | 8.3 | DQF4000 | 400 | 382 | 12.3 | |
| DQF1100 | 110 | 97 | 8.3 | DQF4200 | 420 | 402 | 12.3 | |
| DQF1150 | 115 | 102 | 8.3 | DQF4500 | 450 | 432 | 12.3 | |
| DQF1200 | 120 | 107 | 8.3 | DQF4800 | 480 | 449 | 16.3 | |
| DQF1250 | 125 | 112 | 8.3 | DQF5000 | 500 | 469 | 16.3 | |
| DQF1300 | 130 | 117 | 8.3 | DQF6000 | 600 | 569 | 16.3 | |
| DQF1350 | 135 | 117 | 12.3 | DQF6500 | 650 | 619 | 16.3 | |
| DQF1400 | 140 | 122 | 12.3 | DQF7000 | 700 | 669 | 16.3 |
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