LOW-FRICTION PISTON SEALS

The LF-1 Low-Friction Piston Seal from RL Hudson offers a number of functional advantages and is less expensive than many sealing alternatives. The LF-1 seal successfully reduces the coefficient of friction and therefore reduces or eliminates the problems of stick-slip, breakout, and running friction in many pneumatic cylinder applications.

REDUCES FRICTION

Friction in a pneumatic cylinder is a function of the compressive force of a seal on the surface area of the cylinder. The LF-1 seal is designed with a very narrow axial cross section which minimizes this force by reducing the size of the contact area between the seal and the cylinder. An O-ring with a similarly small axial cross section would fail due to spiraling.

RESISTS SPIRALING

The LF-1 resists spiraling due to its increased radial cross section. The LF-1 can be used as a floating seal with no radial cross section interference, or as a compression seal with only 4-8% radial compression. A dynamic O-ring seal usually has interference of 10-20%.

PROVIDES LUBRICATION

An important feature of the LF-1 design is its lubrication delivery system. The seal features one large concentric groove and several radial grooves on each side which, when packed with grease, provide lubrication to the leading edge of the seal.

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