KR Piston Composite Seal PU
KR is a two piece double acting sealing set which consists of a hard polyurethane seal ring and an NBR elastomer ring as energizer.
They are suitable for high fluid temperatures and medium to heavy-duty applications.
- Description
- Technical Information
- Specifications
- Recommended Products
Description
Structural Design:
During a pressure cycle, piston seals or piston rings guarantee that fluid or other media does not bypass the piston when system pressure forces the piston down the cylinder.
Polyurethane sealing element is robust, wear resistant, with a high modulus of elasticity which enables easier fitting.
The energizer seal with rectangular cross section, prevents twisting in housing.
Summary of Advantages:
- Operating without vibration even with low speeds
- The O-ring prevents the shell from twisting
- Low dry run properties
- Very good abrasion resistance
Typically made from polyurethane, alternative materials can be provided upon request to suit your specific needs.
Technical Information

Technical Parameters:
|
Pressure |
400bar |
|
Speed |
0.5m/s |
|
Material |
PU + NBR |
|
Temperature(°C) |
-35℃~110℃ |
Specifications
|
Designation |
Outer Diameter |
Inner Diameter |
Housing groove width |
|
KR-40*32.5*3.2 |
40 |
32.5 |
3.2 |
|
KR-40*29*4.2 |
40 |
29 |
4.2 |
|
KR-45*34*4.2 |
45 |
34 |
4.2 |
|
KR-45*32*6.3 |
45 |
32 |
6.3 |
|
KR-50*39*4.2 |
50 |
39 |
4.2 |
|
KR-50*34.5*6.3 |
50 |
34.5 |
6.3 |
|
KR-55*39.5*6.3 |
55 |
39.5 |
6.3 |
|
KR-60*49*4.2 |
60 |
49 |
4.2 |
|
KR-60*44.5*6.3 |
60 |
44.5 |
6.3 |
|
KR-63*52*4.2 |
63 |
52 |
4.2 |
|
KR-63*47.5*6.3 |
63 |
47.5 |
6.3 |
|
KR-63*50*6.3 |
63 |
50 |
6.3 |
|
KR-70*59*4.2 |
70 |
59 |
4.2 |
|
KR-70*54.5*6.3 |
70 |
54.5 |
6.3 |
|
KR-70*57*6.3 |
70 |
57 |
6.3 |
|
KR-75*59.5*6.3 |
75 |
59.5 |
6.3 |
|
KR-75*62*6.3 |
75 |
62 |
6.3 |
|
KR-80*69*4.2 |
80 |
69 |
4.2 |
|
KR-80*64.5*6.3 |
80 |
64.5 |
6.3 |
|
KR-80*59*10.5 |
80 |
59 |
10.5 |
|
KR-85*71.5*6.3 |
85 |
71.5 |
6.3 |
|
KR-90*74.5*6.3 |
90 |
74.5 |
6.3 |
|
KR-90*69*8.1 |
90 |
69 |
8.1 |
|
KR-90*69*10.5 |
90 |
69 |
10.5 |
|
KR-95*79.5*6.3 |
95 |
79.5 |
6.3 |
|
KR-100*84.5*6.3 |
100 |
84.5 |
6.3 |
|
KR-100*86.5*6.3 |
100 |
86.5 |
6.3 |
|
KR-100*79*8.1 |
100 |
79 |
8.1. |
|
KR-105*84*6.3 |
105 |
84 |
6.3 |
|
KR-105*89.5*6.3 |
105 |
89.5 |
6.3 |
|
KR-110*89*8.1 |
110 |
89 |
8.1 |
|
KR-110*89*10.5 |
110 |
89 |
10.5 |
|
KR-115*94*8.1 |
115 |
94 |
8.1 |
|
KR-120*99*8.1 |
120 |
99 |
8.1 |
|
KR-120*99*10.5 |
120 |
99 |
10.5 |
|
KR-125*109.5*6.3 |
125 |
109.5 |
6.3 |
|
KR-125*104*8.1 |
125 |
104 |
8.1 |
|
KR-130*109*8.1 |
130 |
109 |
8.1 |
|
KR-140*119*8.1 |
140 |
119 |
8.1 |
|
KR-140*119*10.5 |
140 |
119 |
10.5 |
|
KR-150*129*10.5 |
150 |
129 |
10.5 |
|
KR-160*139*8.1 |
160 |
139 |
8.1 |
|
KR-180*159*8.1 |
180 |
159 |
8.1 |
|
KR-200*179*8.1 |
200 |
179 |
8.1 |