Back-up Ring types |
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External sealing (piston) |
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Type BV: Rectangular, uncut, PTFE |
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Internal sealing (rod) |
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Type BH: Rectangular, cut, PTFE |
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Type BU: Rectangular, uncut, PTFE |
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Type BD: Concave, cut, PTFE |
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Type BG: Rectangular, cut, PTFE |
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Type BP: Spiral, PTFE |
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Type BC: Concave, cut, PTFE |
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Type BB: Concave, uncut, NBR + FKM |
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Type BP: Spiral, PTFE |
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Type BA: Concave, uncut, PTFE |
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Type BB: Concave, uncut, NBR + FKM + PTFE |
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Back-up Ring |
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Back-up Ring types for external sealing (piston) |
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Back-up Ring types, uncut |
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Back-up Ring types, cut |
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Type BV |
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Type BH |
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»Rectangular cross section |
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»Rectangular cross section |
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»Material: PTFE |
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»Material: PTFE |
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»Static and dynamic use |
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»Cut angle of 30°C or 45°C |
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»Reciprocating and rotating movements possible |
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»Static and dynamic use |
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»Reciprocating and rotating movements possible |
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Type BB |
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»Preferred for installations in a closed groove where |
»Concave cross section |
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»uncut Back-up Rings are not suitable |
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»Material: NBR, FKM |
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»The large contact surface protects the O-Ring against |
Type BD |
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deformation in case of high pulsating pressure |
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»Concave cross-section |
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»Dimensional stability of the O-Ring improves the sealing |
»Material: PTFE |
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force and increases the service life |
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»Cut angle of 30°C or 45°C |
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»Preferably for static use |
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»The large contact surface protects the O-Ring against |
»Reciprocating movements possible |
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deformation in case of high pulsating pressure |
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»Dimensional stability of the O-Ring improves the sealing |
Type BA |
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force and increases the service life |
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»Concave cross section |
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»Static and dynamic use |
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»Material: PTFE |
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»Reciprocating movements possible |
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»The large contact surface protects the O-Ring against |
»Preferred for installations in a closed groove where |
deformation in case of high pulsating pressure |
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uncut Back-up Rings are not suitable |
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»Dimensional stability of the O-Ring improves the sealing |
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force and increases the service life |
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Back-up Ring types, spiral |
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»Static and dynamic use |
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Type BP |
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»Reciprocating and rotating movements possible |
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»Rectangular cross section |
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»Material: PTFE |
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Snap-back Back-up Ring, special Type |
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»Cut angle of 30°C or 45°C |
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»Easy installation in closed grooves due to the snap-back |
»Consists as standard two spiral windings which are cut at |
effect of the material |
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the ends at an angle |
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»The dimensions are different compared to the standard |
»Static and dynamic use |
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Back-up Rings. Production only on request according to |
»For reciprocating movements only |
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drawing |
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»Preferred for installations in a closed groove where |
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uncut Back-up Ring are not suitable |
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»Compensation of large temperature changes and |
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tolerances without difficulties by a screw-like elongation |
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and contraction. Easy Installation in closed grooves for |
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external sealing applications |
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»The dimensions are different compared to standard |
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Back-up Rings |
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