H Type Oil Seals Spring Energized Seal

H Type Oil Seals Spring Energized Seal

H type
Delivery Time
3-7 days
Standard product/Customized product
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The H Type oil seals from DSH Seals are spring energized radial lip seals designed for high performance applications. These seals feature precisely calibrated springs that continuously exert pressure on the sealing lips, keeping them firmly engaged on the shaft.

When considering a rotary service seal and additional gland length is available, an O-Ring Heel Seal provides a level of anti-rotation and redundant sealing. The addition of an O-Ring on the heel of a radial seal creates a high friction interface at the bore to counteract rotary forces. With proper hardware design, a high level of sealing can be realized, making an O-Ring Heel Seal a good choice where gaseous or low viscosity fluids need to be sealed.

Single-Lip V-Spring-loaded rotary shaft seal for extreme environments.

This seal is designed to provide long service life and low friction for extreme service applications over a wide temperature range.

This seal is for high PV applications characterized by high pressure and low speed.    This seal has a relatively small axial length and is available in many materials specially suited to handle aggressive chemicals and environments.  


Common Materials Used in this Product


  • The most popular fillers for products are graphite, fiberglass/molybdenum disulfide, carbon fiber and mineral.


Graphite Filled


  • Since graphite is often used as a lubricant, it does not significantly increase the coefficient of friction of PTFE when used as a filler. The low friction allows the compound to be used when both shaft speed and pressure are high. Graphite also is chemically inert which enables its use in corrosive medias.


Proprietary Low Wear PTFE


  • This proprietary filled PTFE offers low wear and friction properties, used in general applications where long life is required. Not recommended for applications with abrasive


Molybdenum Disulfide and Fiberglass Filled


  • Molybdenum disulfide increases the hardness of the seal surface while decreasing friction. It is normally used in small proportions combined with other fillers such as glass. MoS2 is
    also inert towards most chemicals.


Carbon Fiber Filled


  • Carbon fiber lowers creep, increases flex and compressive modulus and raises hardness. Coefficient of thermal expansion is lowered and thermal conductivity is higher for compounds of carbon fiber filled PTFE. Ideal for automotive applications in shock absorbers and water pumps.




Material description Filled PTFE (such as MoS2/Glass fiber, Ekonol and so on), or Virgin PTFE is available, O ring maerial depends on the specific application.
Available Color White, black,yellow, gold etc.
Material Strength Virgin PTFE can meet the requirement of food grade approval.
Type H oil seal has single lip, apply to high pressure till 20 bar. We can offer you different kinds of material which apply to your specific application. Customized sealing solution is available.
temperature -20~+100℃
Speed ≤8 m/s
Pressure ≤20 bar
Medium oil, grease.
Applied device H Type oil seal has single lip wiht V type spring reinforced, suitable for poor roundness and largely swung rotary shaft sealing.