Teflonajkas tengelytömítés rozsdamentes acélházzal

APT1 is a single action rotary shaft seal for rotating or pivoting shafts with a very long lifespan. Good sealing action is guaranteed by the pre-stressed PTFE sealing lip on the shaft. The very low friction coefficient of the PTFE material prevents a stick-slip effect, lowers the starting resistance and is therefore also a good choice for dry operation or applications with insufficient lubrications. The APT1 can be used at high peripheral speeds as limited thermal development occurs. It is suitable for large pressure loads, optionally 5/10/25 bar. Tight and accurate fitting is achieved by the metal outer casing. The APT1 design has limited sealing action with thin fluid and gaseous media and in split housings. To guarantee a high degree of static sealing on the outer surface, better surface treatment of the housing bore is required or an additional coat of paint should be applied to the metal outer casing.

Material
PTFE
FKM 75 SHORE A
carbon steel
spring steel
MediaMineral oils, Synthetic lucricants
Temperature-90°C / +250 °C
Pressure≤ 25 bar
Speed40 m/s

Product advantages

  • High thermal resistance
  • Pressure Loadable
  • High chemical resistance
  • Permits high shaft speeds
  • Applicable with insufficient lubrication and dry running
  • Very low friction coefficient, stick-slip free running

Application

Sealing of rotating machine elements, such as shafts, hubs and axles at high peripheral speeds, high pressures and/or high temperatures. Sealing of aggressive chemi­cals due to the excellent chemical resistance of PTFE. For dry operation or applications with insufficient lubrica­tion due to the very good friction coefficient of PTFE.

Seal housing tolerance

Ødf8/h11
ØDH8

Installation

The outer diamenter of the metal outer casing is centralised in the housing by press-fitting. Suitable tools should be used for installation. It is recommended that the installation housing is designed to provide the rotary shaft seal with axial support. The PTFE sealing lip must not be damaged during installation. For this reason, we recommend using an installation cone.

Surface roughnessRa(μm)Rz(μm)Rmax
Groove base ØD≤1.6-6.3≤10-25≤25
Shaft≤0.2-0.8≤1.0-5.0≤6.3

Szeretne többet megtudni az APT 1 tömítésről?

KAPCSOLAT