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Foot-shaped slip ring combination seal JK2—Ⅰ
I. Overview
Foot-shaped slip ring combination seal JK2-I is composed of a foot-shaped slip ring filled with polytetrafluoroethylene (PTFE) composite material and an O-shaped rubber ring (non-standard). It is used for the sealing or static sealing of hydraulic and pneumatic ultra-high pressure reciprocating unidirectional piston rods (shafts), generally using open grooves.
2. Working conditions
Working pressure: 0～200MPa
Operating temperature: -55～+250℃ (depending on O-ring material)
Reciprocating speed: ≤6m/s
Applicable medium: air, water, water-glycol, mineral oil, acid, alkali, mud, etc.
3. Schematic diagram of assembly structure
JK2—Ⅰ Groove size
|
Axis diameter d(f8) |
Groove bottom diameter D(H9) |
Groove width L+0.2 |
Section diameter of O-ring d2 |
Radial clearance S≤ |
Chamfer Z≥ |
| 51~95 | d+13.8 | 13.3 | 8.0 | 0.3 | 4 |
| 96~140 | d+18.0 | 17.4 | 10.0 | 0.3 | 5 |
| 141~200 | d+22.2 | 21.3 | 13.0 | 0.4 | 7 |
| 201~450 | d+30.0 | 27.0 | 16.0 | 0.5 | 7 |