Kaco U-rings PNN…V

Get a quote
Category:

Only Kaco U-rings of the PNN …V series may be used for sealing hydraulic equipment. A description of the sealing lip of these U-rings was already given on pages 4 and 5.

The characteristic projection of material over the sealing edge displays considerable advantages for the design of the installation location and functioning of the U-ring. As the ring body projecting over the support shoulder lies free during the expansion of the internal sealing lip by the rod, the resulting radial forces can only find support in the area of the sealing edge and this results in the fact that the tension force is at its maximum at the sealing edge. As a result of this, especially in the case of highly viscous hydraulic oils or in the case of low starting temperatures, permeation of

the sealing lip contact surface by the highly viscous medium is avoided and good sealing is obtained. But also in normal applications, the necessary pressing of the seal is guaranteed by the sealing lip projection, even if in the course of time the characteristics of the elastomer material alter due to material fatigue and aging.

PNN …V type U-rings are installed without support ring (figure 27). As a result of this, the back can be kept narrower and axial space requirements are reduced. As a result of the reverse displaced sealing edge, the relatively wide front side of the material projection can find sufficient support when approaching the groove wall (e.g. in the case of excessive stick-friction).

This type of U-ring can be used not only for piston but also for a rod sealing with operating pressures up to 160 bar. Figure 28 shows the installation conditions of a piston and a rod seal. A comparison of figure 26 and figure 28 shows the differences found in the installation of U-rings with and without support ring.

The width of the recesses (groove width) in the machi-ned path for mounting of the U-ring must be1 mm larger than the U-ring height H.

 

Item number  d D H h
PNN4 • 14  V01 4 14 7 4,5
PNN6 • 14 V01 6 14 5,5 2,8
PNN6 • 22  V01 6 22 10 6,5
PNN8 • 16  V01 8 16 6,5 3,5
PNN10 • 20 V01 10 20 6 3,2
PNN10  • 28 V01 10 28 10 5
PNN12 • 20 V01 12 20 6,5 3,4
PNN14 • 24 V01 14 24 9 4
PNN14 • 24 V02 14 24 7,2 4,1
PNN15 • 25 V01 15 25 10 6
PNN16 • 24 V01 16 24 6,5 3,2
PNN16 • 24 V02 16 24 5,5 2,8
PNN16 • 26 V01 16 26 5,5 2,8
PNN16 • 26 V02 16 26 9 4
PNN16 • 26 V03 16 26 7,2 4,1
PNN16 • 30 V01 16 30 7 3,5
PNN17 • 25 V01 17 25 6 2,8
PNN18 • 25 V01 18 25 5 2,3
PNN18 • 26 V01 18 26 6 3,2
PNN18 • 28 V01 18 28 6 3,2
PNN20 • 28 V01 20 28 6,5 3,2
PNN20 • 30 V01 20 30 9,2 4,7
PNN20 • 30 V02 20 30 7,2 4,1
PNN21 • 36 V01 21 36 9 4,5
PNN22 • 32 V01 22 32 9 4,7
PNN22 • 32 V02 22 32 7,2 4,1
PNN24 • 40 V01 24 40 10 5,5
PNN25  • 35 V01 25 35 7 3,5
PNN28 • 40 V01 28 40 9 5
PNN30  • 40 V01 30 40 7 3,5
PNN30 • 45 V01 30 45 11 6
PNN30 • 46 V01 30 46 11 6
PNN30 • 47 V01 30 47 11 6
PNN30 • 50 V01 30 50 12 7
PNN32 • 44  V01 32 44 10 5,5
PNN32 • 45 V01 32 45 10 6
PNN35 • 45 V01 35 45 7 3,5
PNN36 • 50 V01 36 50 9 5
PNN40 • 50 V01 40 50 7 3,5
PNN40 • 55 V01 40 55 10 5
PNN45 • 60 V01 45 60 10 5
PNN50 • 70 V01 50 70 12 6,5
PNN56 • 76 V01 56 76 12 6,5
PNN63 • 83 V01 63 83 15 9,5
PNN65 • 85 V01 65 85 10 5
PNN70 • 90 V01 70 90 12 6,5
PNN76 • 92 V01 76 92 14,5 8,8
PNN80 • 100 V01 80 100 15 9
PNN85 • 105 V01 85 105 12 6
PNN90 • 110 V01 90 110 10 15
PNN100 • 120 V01 100 120 15 9
PNN105 • 130 V 01 105 130 18 11
PNN110 • 135 V01 110 135 15,5 8,5

Merk

Kaco

Beoordelingen

Er zijn nog geen beoordelingen.

Wees de eerste om “Kaco U-rings PNN…V” te beoordelen

Het e-mailadres wordt niet gepubliceerd. Vereiste velden zijn gemarkeerd met *

WE’D LOVE TO HELP

Get a qoute