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Home  > PRODUCTS  > Piston Seals  >  DDMA - PTFE Hydraulic Piston Seal with NBR/FKM O-Ring
DDMA - PTFE Hydraulic Piston Seal with NBR/FKM O-Ring

DDMA - PTFE Hydraulic Piston Seal with NBR/FKM O-Ring

Diameter Range
3-1600mm
Pressure Range
0-25MPa
Temperature Range
-30℃+100℃
Speed
1m/s
Medium
hydraulic oil, flame retardant liquid, water and others
Installation Recommendation

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Application and properties

Suitable for seals of pistons and plungers, tandem seals for a variety of liquid applications are internal seals. Before installation, the sealing lip is protruded outwards, and the cylinder liner is pressed tightly after installation to provide elasticity for the wear ring, excellent sealing results can be achieved even in the absence of pressure. It can separate the liquid on both sides of the sealing ring, so it is also suitable for the sealing of the oil chamber, and the invasion of other liquids can be prevented. High wear resistance, low friction, no crawling phenomenon.

Standard materials


Sealing ring: filled PTFE

Elastomer: NBR / PU

Working Conditions

Working  Conditions

Diameter Range

Pressure Range

Temperature Range

Speed

Medium

3-1600mm

0-25MPa

-30℃+100℃

1 m/s

hydraulic oil, flame retardant liquid, water and others

Installation Dimensions

D H8

d h9

H

L+0.2

e

Order No.

40
45
50

30
35
40

15
15
15

16
16
16

7
7
7

DDMA40*30*16
DDMA45*35*16
DDMA50*40*16

56
63
65

46
53
55

15
15
15

16
16
16

7
7
7

DDMA56*46*16
DDMA63*53*16
DDMA65*55*16

70
75
80

60
65
70

15
15
15

16
16
16

7
7
7

DDMA70*60*16
DDMA75*65*16
DDMA80*70*16

85
90
95

75
80
85

15
15
15

16
16
16

7
7
7

DDMA85*75*16
DDMA90*80*16
DDMA95*85*16

100
105
115

90
95
105

15
15
15

16
16
16

7
7
7

DDMA100*90*16
DDMA105*95*16
DDMA115*105*16

120
125
130

110
113
118

15
15
15

16
16
16

7
10
10

DDMA120*110*16
DDMA125*113*16
DDMA130*118*16

135
140
145

123
128
133

15
15
15

16
16
16

10
10
10

DDMA135*123*16
DDMA140*128*16
DDMA145*133*16

150
155
160

138
143
148

15
15
15

16
16
16

10
10
10

DDMA150*138*16
DDMA155*143*16
DDMA160*148*16

170
180
190

158
168
178

15
15
15

16
16
16

10
10
10

DDMA170*158*16
DDMA180*168*16
DDMA190*178*16

200
210
220

188
198
208

15
15
15

16
16
16

10
10
10

DDMA200*188*16
DDMA210*198*16
DDMA220*208*16

225
235
240

213
223
228

15
15
15

16
16
16

10
10
10

DDMA225*213*16
DDMA235*223*16
DDMA240*228*16

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Installation Dimensions

Product Message

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