Y-type rubberY-type rubber seals investigate structure

Y-type rubber seals are often used in hydraulic or pneumatic cylinder, since only one-way seal, its product structure is provided within the outer lip lip A and B in order to obtain a better initial sealing effect, engineers design products should, in its inner and outer lip leave some amount of interference. After loading the trench work, two lip seals only the groove diameter portion in contact with the sliding surface to produce a certain amount of prestressing, play a role in sealing. In operation, the fluid pressure at the sealing lip is deformed in the circumferential direction, completely fit on the surface of the piston rod and the cylinder mating surface, it acts as a seal.

Its design working pressure Y type rubber seals of related design parameters with different working pressures need to be adjusted accordingly. Y-ring design parameters include, the amount of interference lip, lip thickness a, the outer lip of the cylinder and the piston rod or the inner lip angle A, the size of the roots, as well as the inner and outer lip angle B.

Y-type rubber seals installed, the lip seal portions which contact interface with a certain amount of interference, generating an initial sealing force to achieve the sealing effect. The initial excessive interference will cause friction sealing lip and activities increase the contact surface between the lip parts easy to wear, Y rubber seals shortened life; the initial amount of interference is too small, the sealing lip and the movable contact surfaces preload between the small, sealed the result is not satisfactory, or even can not meet the high pressure seal. When the working pressure is small, it can be considered products are used in non-pressure state, when the sealing force is only in contact with the sealing lip preload movable contact surface; the higher the pressure, not only to consider the sealing lip interference size, but also to consider the corresponding increase in the thickness, in order to increase the bending resistance of the sealing lip. Y type rubber seal sealing lip can be molded or shaped mechanical cutting mode. Small lip size or dimensions are particularly large, the general compression molding. When using cutting mode cutting lip, required special mold, and more a process, a long production cycle.

Inner lip and outer lip of the piston or the cylinder directly affects the size of the angle between the size of its respective sealing lip contact area of ??the contact surfaces. The larger the angle, Y-type rubber seals sealing lip contact area of ??the smaller their respective contact surfaces, which has little effect on the low pressure sealing effect, but the effect will affect the high pressure sealing; when the angle is small, its sealing lip the contact area between the movable contact surface is large, with the increasing work pressures, interference due to the expansion force of the sealing lip generated increases in favor of the seal, but it will increase the friction contact surface wear and tear, the impact of product use life. Under pressure to meet the working conditions, to choose the right angle, to get a good seal, and can effectively extend the life of the product. Y-type rubber seals on the reasonable value of the angle should be appropriate mechanical analysis.

Y-type rubber seals under pressure, its roots will be compressed and deformed shape, resulting in a width dimension becomes large, the height of a small, working pressure is not the same, the width of the root gap seals from the cylinder or piston clearance radius, instead of using the value of size closely related to life; if the working pressure for extrusion gap is large enough, the seal may be due to their own roots pressure and damage on the extrusion gap.

In addition, the number of high pressure sealing the occasion, even if the choice of extrusion gap is more reasonable, but also more difficult to guarantee the root material from damage. For the Y-type rubber seals can work under pressure, can be increased to its roots support ring, the support ring generally choose low friction coefficient of PTFE or polyamide.

The actual installed capacity assessment test temperature of 100 ?, after 24h of continuous work on the device, no leakage, indicating good sealing effect. After removal, with no appearance of seals observed large deformation and failure phenomenon. seals investigate structure

Y-type rubber seals are often used in hydraulic or pneumatic cylinder, since only one-way seal, its product structure is provided within the outer lip lip A and B in order to obtain a better initial sealing effect, engineers design products should, in its inner and outer lip leave some amount of interference. After loading the trench work, two lip seals only the groove diameter portion in contact with the sliding surface to produce a certain amount of prestressing, play a role in sealing. In operation, the fluid pressure at the sealing lip is deformed in the circumferential direction, completely fit on the surface of the piston rod and the cylinder mating surface, it acts as a seal.

Its design working pressure Y type rubber seals of related design parameters with different working pressures need to be adjusted accordingly. Y-ring design parameters include, the amount of interference lip, lip thickness a, the outer lip of the cylinder and the piston rod or the inner lip angle A, the size of the roots, as well as the inner and outer lip angle B.

Y-type rubber seals installed, the lip seal portions which contact interface with a certain amount of interference, generating an initial sealing force to achieve the sealing effect. The initial excessive interference will cause friction sealing lip and activities increase the contact surface between the lip parts easy to wear, Y rubber seals shortened life; the initial amount of interference is too small, the sealing lip and the movable contact surfaces preload between the small, sealed the result is not satisfactory, or even can not meet the high pressure seal. When the working pressure is small, it can be considered products are used in non-pressure state, when the sealing force is only in contact with the sealing lip preload movable contact surface; the higher the pressure, not only to consider the sealing lip interference size, but also to consider the corresponding increase in the thickness, in order to increase the bending resistance of the sealing lip. Y type rubber seal sealing lip can be molded or shaped mechanical cutting mode. Small lip size or dimensions are particularly large, the general compression molding. When using cutting mode cutting lip, required special mold, and more a process, a long production cycle.

Inner lip and outer lip of the piston or the cylinder directly affects the size of the angle between the size of its respective sealing lip contact area of ??the contact surfaces. The larger the angle, Y-type rubber seals sealing lip contact area of ??the smaller their respective contact surfaces, which has little effect on the low pressure sealing effect, but the effect will affect the high pressure sealing; when the angle is small, its sealing lip the contact area between the movable contact surface is large, with the increasing work pressures, interference due to the expansion force of the sealing lip generated increases in favor of the seal, but it will increase the friction contact surface wear and tear, the impact of product use life. Under pressure to meet the working conditions, to choose the right angle, to get a good seal, and can effectively extend the life of the product. Y-type rubber seals on the reasonable value of the angle should be appropriate mechanical analysis.

Y-type rubber seals under pressure, its roots will be compressed and deformed shape, resulting in a width dimension becomes large, the height of a small, working pressure is not the same, the width of the root gap seals from the cylinder or piston clearance radius, instead of using the value of size closely related to life; if the working pressure for extrusion gap is large enough, the seal may be due to their own roots pressure and damage on the extrusion gap.

In addition, the number of high pressure sealing the occasion, even if the choice of extrusion gap is more reasonable, but also more difficult to guarantee the root material from damage. For the Y-type rubber seals can work under pressure, can be increased to its roots support ring, the support ring generally choose low friction coefficient of PTFE or polyamide.

The actual installed capacity assessment test temperature of 100 ?, after 24h of continuous work on the device, no leakage, indicating good sealing effect. After removal, with no appearance of seals observed large deformation and failure phenomenon.