Head seal Prädifa series NLA, FlexiSeal® | Product Series

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Outside Diameter (mm)

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Head seal Prädifa series NLA, FlexiSeal® Head seal Prädifa series NLA, FlexiSeal®

Head seal Prädifa series NLA, FlexiSeal®

Symmetric head seals design. FlexiSeal. Spring-energized PTFE seal.

Technical Specifications

  • Media: Hydraulic
  • Polymer Material Options: Polytetrafluoroethylene (PTFE, mPTFE, TFM, Polon®), Ultra-High Molecular Weight Polyethylene (UHMW-PE)
  • Maximum Operating Pressure: 200 bar
  • Minimum Operating Temperature: -200 to -190 °C
  • Maximum Surface Speed: 5 m/sec
  • Unit of Measure: Length: mm
  • Cushioning Mechanism: No
  • Thermal Application Type: Expanded Low and High Temperature (< -35 to 140°C)
  • Pressure Rating: Medium Pressure (< 250 bar)
Safety Warning

Full Product Description

The NLA product series is a FlexiSeal® design with a cantilever spring. It is ideally suited for static applications requiring greater flexibility of the seal cross-section (spring travel) due to higher coaxiality fluctuations between the rod and groove or due to excessive expansion and contraction (“breathing”). It is characterized by extremely high temperature and chemical resistance. NLA may also be used for dynamic applications (internal and external).

• Symmetric lip design.
• Cantilever spring for low load / high compliance behaviour.
• Many high-resilience energizer options available, including choice of light, medium and heavy loads and NACE for oil field use.
• Available with silicone filling for food and drug applications.
• Allows the integration of a stand-off ring to protect the sealing lips in case of reverse pressure.

Related Documents

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Products Inside Diameter (mm) Outside Diameter (mm) Element Height (mm) Groove Width Minimum Working Temperature (C) Maximum Working Temperature (C) Seal Material
NLA-M000794-01-006-4 7,94 10,8 2,4 2.4 -200 80 6
NLA-M000800-02-007-4 8 12,5 3,6 3.6 -190 230 7
NLA-M002420-01-001-4 24,2 27 2,4 2.4 -190 230 1
NLA-M002500-04-001-4 25 34,5 7,1 7.1 -190 230 1
NLA-M002500-04-005-4 25 34,5 7,1 7.1 -190 230 5
NLA-M002501-03-006-4 25 31,2 4,8 4.8 -200 80 6
NLA-M002540-04-005-4 25,4 34,9 7,1 7.1 -190 230 5
NLA-M002800-02-045-4S 28 32,5 3,6 3.6 -190 230 45
NLA-M003000-03-011-4 30 36,2 4,8 4.8 -190 230 11
NLA-M003001-03-005-4 30 36,2 4,8 4.8 -190 230 5
NLA-M003050-04-005-4 30,5 40 7,1 7.1 -190 230 5
NLA-M003055-04-005-4 30,6 40 7,1 7.1 -190 230 5
NLA-M003810-04-005-4 38,1 47,6 7,1 7.1 -190 230 5
NLA-M004445-04-005-4 44,5 53,9 7,1 7.1 -190 230 5
NLA-M004950-04-005-4 49,5 59 7,1 7.1 -190 230 5
NLA-M005080-04-005-4 50,8 60,3 7,1 7.1 -190 230 5
NLA-M005460-04-007-4 54,6 64,1 7,1 7.1 -190 230 7
NLA-M006000-04-007-2 60 69,5 7,1 7.1 -190 230 7
NLA-M006000-04-011-4 60 69,5 7,1 7.1 -190 230 11
NLA-M006050-04-005-4 60,5 70 7,1 7.1 -190 230 5
NLA-M007001-03-005-4S 70 76,2 4,8 4.8 -190 230 5
NLA-M008001-03-005-4S 80 86,2 4,8 4.8 -190 230 5
NLA-M009800-04-005-2 98 107 7,1 7.1 -190 230 5
NLA-M011000-04-010-4 110 119 7,1 7.1 -190 230 10
NLA-M011100-05-007-2 111 123 9,5 9.5 -190 230 7
NLA-M011400-02-007-2 114 119 3,6 3.6 -190 230 7
NLA-M011600-05-007-2 116 128 9,5 9.5 -190 230 7
NLA-M012780-05-011-4 128 140 9,5 9.5 -190 230 11
NLA-M013335-02-001-4 133 138 3,6 3.6 -190 230 1
NLA-M013970-04-006-4 140 149 7,1 7.1 -200 80 6
NLA-M014500-04-005-4 145 154 7,1 7.1 -190 230 5
NLA-M015243-03-001-4 152 159 4,8 4.8 -190 230 1
NLA-M016500-04-005-4 165 174 7,1 7.1 -190 230 5
NLA-M020320-04-006-4 203 213 7,1 7.1 -200 80 6
NLA-M002750-02-001-2 27.5 32.02 3.6 3.6 -190 230 Polon 001
NLA-M010200-02-001-4 102 106.52 3.6 3.6 -190 230 Polon 001

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