K 780

DESCRIPTION

Compact piston seal K 780 was designed as robust seal for application with closed grooves in one-part pistons, but it can be used for split pistons as well. This double-acting seal use a rubber sealing profile which showed excellent wear resistance during the tests. The seal can operate very efficiently in wide range of medium-duty applications. The seal consists of one NBR multi-lip sealing ring, two split back-up rings, two profile rings and two split guiding L-rings.

Advantages of material and shape combination are following:

  • very good lifetime
  • one-part piston construction is possible
  • low friction and very good dynamic tightness at low pressure
  • very good resistance against the extrusion due to special shape of back-up rings at high pressure

ASSEMBLY

Please, assemble in following order:
first assemble the rubber ring, then put the back-up rings and finally mount the guiding rings.

MEDIA

This seal is suitable for liquids based on mineral oil in range from -40°C to +100°C. For HFA liquids only to +60°C. Resistance in other media is subject to request.

Operating conditions


Maximum pressure
´v´max. Temperature range Temperature range
m/s -30°C / +80°C -30°C / +100°C
0.5 250 bar 160 bar
0.15 400 bar 260 bar

Product filtering


Number of products found: 83

Product number
Stock
Quantity
Uom
Shop
Unit price from
Inner
Ø d1
Outer
Ø D1
L1 Housing
height
H Seal
height
S Profile
width
L2 Bearing
length
d2 Bearing
diameter
Max
pressure
Max
temp
Min
temp
Max
speed
Compound 1 Compound 2 Compound 3 Compound
combination
Type Seal type
Yes
pc
on request
11
20
13.50
4.50
2.10
17
400
100
-30
0.50
NBR
TPE
ACETAL
NBR / TPE / ACETAL
K780
Compact piston seals
Yes
pc
on request
15
25
12
5
4
21
400
100
-30
0.50
NBR
TPE
ACETAL
NBR / TPE / ACETAL
K780
Compact piston seals
Yes
pc
on request
16
25
13.50
4.50
2.10
22
400
100
-30
0.50
NBR
TPE
ACETAL
NBR / TPE / ACETAL
K780
Compact piston seals
Yes
pc
on request
21
30
13.50
4.50
2.10
27
400
100
-30
0.50
NBR
TPE
ACETAL
NBR / TPE / ACETAL
K780
Compact piston seals
Yes
pc
on request
22
32
15.50
5
2.60
28
400
100
-30
0.50
NBR
TPE
ACETAL
NBR / TPE / ACETAL
K780
Compact piston seals
Yes
pc
on request
22
32
16.40
5
6.35
28.50
400
100
-30
0.50
NBR
TPE
ACETAL
NBR / TPE / ACETAL
K780
Compact piston seals
Yes
pc
on request
25
35
15.50
5
2.60
31
400
100
-30
0.50
NBR
TPE
ACETAL
NBR / TPE / ACETAL
K780
Compact piston seals
Yes
pc
on request
25
35
16.40
5
6.35
31.40
400
100
-30
0.50
NBR
TPE
ACETAL
NBR / TPE / ACETAL
K780
Compact piston seals
Yes
pc
on request
24
40
18.40
8
6.35
35.40
400
100
-30
0.50
NBR
TPE
ACETAL
NBR / TPE / ACETAL
K780
Compact piston seals
Yes
pc
on request
26
40
15.50
8
2.60
36
400
100
-30
0.50
NBR
TPE
ACETAL
NBR / TPE / ACETAL
K780
Compact piston seals

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