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FSR-V Variseal for shaft With V-shaped spring

FSR-V Variseal for shaft With V-shaped spring

Diameter Range
Pressure Range
Temperature Range
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1. Performance and use

It is suitable for one-way sealing, can be used for reciprocating pistons, and can also be used for rotary sealing, and has good sealing performance at high, medium and low pressure.

The working pressure adapts to a wide range, and the pressure resistance can be enhanced by adding a retaining ring.

The friction coefficient is small, the contact pressure with the mating surface is low, the friction force with the mating surface is the smallest among all types of seals during operation, it can work with or without lubrication, it is wear-resistant and has a long service life.

The working medium of the sealing sleeve has wide adaptability, except for soluble alkali metal, high-temperature fluorine gas and chlorine trifluoride, other chemicals do not react with it.

The wide operating temperature range can be used from -200°C to +250°C.

It can be used in special working conditions such as extremely high speed, extremely low speed, and micro stroke.

It is suitable for aviation, military and industrial sealing groove sizes, the installation groove is small, and the groove is open or semi-open. The standard product has a small cross section and can be installed in the O-ring groove of the same level; the size change is flexible and the adaptability is wide, and a suitable seal can be designed for almost any size of the installation groove, and the design of non-standard parts is very convenient.

2. Materials

Sealing sleeve: Filled with polytetrafluoroethylene (PTFE). According to different working conditions and sealing requirements, different filling materials and filling processes can be selected, please contact us for details.

Spring: stainless steel 301, 302, 304, 316 or 718, determined according to specific working conditions, the default is 301, please inquire and explain before ordering for special working conditions.

3. Labeling method

Mark with the size of the installation groove. The marking method is:

FSK "bore diameter D" x "groove bottom diameter d" x "groove width L" – "spring material" V

For example, "FSK100×90×7.5-316V" means "V-shaped spring hole with universal plug, groove size: hole diameter 100, groove bottom diameter 90, groove width 7.5, spring material stainless steel 316.

4. Matters needing attention:

Ⅰ. The installation groove must be open or semi-open, and it is recommended to be open.

Ⅱ. If it is a rotary shaft seal, the surface hardness of the shaft should not be less than HRC40.

Ⅲ. When considering the adaptability of the working medium, the adaptability of the sealing sleeve and the spring should be considered.

Ⅳ. In principle, the groove of any size can be designed with a corresponding pan-seal ring, but please try to choose a standard pan-seal ring that satisfies the size relationship in the above table, so as to achieve the best performance.

Ⅴ, The normal groove width can only withstand pressure of 20MPa, and the groove width must be increased if it exceeds 20MPa.


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