Company Advantages1. Owing to its elegant look and sturdy design, these sets are highly in demand amongst our customers.
2. Dms Seals Technology Co.,limited works hard to make the quality and performance of piston seals products more in line with the needs of customers. DMS Seals' production equipment and test equipment are on the leading level in the industry
3. All the hydraulic piston seals are reliable in property and reputably appraised by customers. As a modern sealing technology company, DMS Seal manufacturer has a wealth of experience
4. We are aimed for setting new standards in pneumatic piston seals solutions by providing supreme high quality o-ring seal. DMS Seal manufacturer is a technology enterprise which specialized in the R&D and production of seals.
Installation Recommendation

Application and properties
Apply to cylinder piston, consisting of a seal ring, an O-Ring, a pair of retaining rings and a pair of guide sleeves.
The seal ring and cylinder bore conforming to be a symmetric section to achieve the sealing performance, with double acting sealing performance.
Sealing ring: filled PTFE
O-Ring: NBR / FKM
Back-up ring: filled PTFE / PA
Guide ring: filled PTFE / PA
Working Conditions
Working Conditions |
Diameter Range | Pressure Range | Temperature Range | Speed | Medium |
3-1600mm | 0-45MPa | -30℃+200℃ | 1 m/s | hydraulic oil, flame retardant liquid, water and others |
Installation Dimensions
D | d | b | d2 | d3 | a | c | f | e | Order No. |
40
45
50 | 26
31
34 | 32
32
39 | 32
37
42 | 36
41
46 | 3.5
3
3 | 15.5
15.5
20.5 | 8.25
8.25
9.25 | 7
7
7 | DDKK40*26*32
DDKK45*31*32
DDKK50*34*39 |
56
60
63 | 40
44
47 | 39
39
39 | 48
52
55 | 52
56
59 | 3
3
3 | 20.5
20.5
20.5 | 9.25
9.25
9.25 | 7
7
7 | DDKK56*40*39
DDKK60*44*39
DDKK63*47*39 |
65
70
75 | 49
54
59 | 39
39
39 | 57
62
67 | 61
66
71 | 3
3
3 | 20.5
20.5
20.5 | 9.25
9.25
9.25 | 7
7
7 | DDKK65*49*39
DDKK70*54*39
DDKK75*59*39 |
80
85
90 | 62
67
72 | 43
43
43 | 72
77
82 | 76
81
86 | 3
3
3 | 22.5
22.5
22.5 | 10.25
10.25
10.25 | 7
7
7 | DDKK80*62*43
DDKK85*67*43
DDKK90*72*43 |
95
100
105 | 77
82
87 | 43
43
43 | 87
92
97 | 91
96
101 | 3
3
3 | 22.5
22.5
22.5 | 10.25
10.25
10.25 | 7
7
10 | DDKK95*77*43
DDKK100*82*43
DDKK105*87*43 |
110
115
120 | 92
97
102 | 43
43
43 | 102
107
112 | 106
111
116 | 3
3
3 | 22.5
22.5
22.5 | 10.25
10.25
10.25 | 10
10
10 | DDKK110*92*43
DDKK115*97*43
DDKK120*102*43 |
125
130
140 | 103
108
118 | 53
53
53 | 115
120
130 | 121
126
136 | 4
4
4 | 26.5
26.5
26.5 | 13.25
13.25
13.25 | 10
10
10 | DDKK125*103*53
DDKK130*108*53
DDKK140*118*53 |
150
160
165 | 128
138
143 | 53
53
57 | 140
150
155 | 146
156
161 | 4
4
6 | 26.5
26.5
26.5 | 13.25
13.25
15.25 | 10
10
10 | DDKK150*128*53
DDKK160*138*53
DDKK165*143*57 |
170
180
190 | 148
158
165 | 57
57
64 | 160
170
180 | 166
176
186 | 6
6
4.5 | 26.5
26.5
31.5 | 15.25
15.25
16.25 | 10
10
10 | DDKK170*148*57
DDKK180*158*57
DDKK190*165*64 |
195
200
210 | 170
175
185 | 64
64
71 | 185
190
200 | 191
196
206 | 4.5
4.5
8 | 31.5
31.5
31.5 | 16.25
16.25
19.75 | 10
10
12 | DDKK195*170*64
DDKK200*175*64
DDKK210*185*71 |
Company Features1. Dms Seals Technology Co.,limited gathers industry elites to produce the best piston seals.
2. Our professional technician strictly operate machines to ensure its normal operation and produce high quality hydraulic piston seals.
3. We can customize solutions to making o-ring seal for your own pneumatic piston seals use.