K704

  

Material

Material

High specification NBR 80 shore sealing element

Polyester elastomer header

Acetal anti -extrution rings.

 

Introduction

K704 is a double acting seals. The fabric rubber sealing element is designed with multi lip for efficient dynamic sealing.

K704 is used for 2 piston connected piston. It has strength and durability.

Double acting piston seal, suitable for heavy duty applications. The seal set consists of 3 elements.

1.      Two Acetal full width anti-extrusion wear rings.

2.      High specification NBR 80 shore and NBR impregnated cotton sealing element.

Advantages

Ø  Good sealing effect

Ø  Economic sealing. It is combined guiding for piston

Ø  Simple installation

Ø  Long Life

Ø  Extremely good sealing effect at low pressure.

Ø  Easy assembly.

Ø  Simple solution.

Material

Power-transmission fluid

Temperature C

Speed

Pressure

 

NBR Fabric

POM

Mineral Oil

 -45  ÷  110˚

≤  0.5m/s

700 bar

HFC Water Glycol

-30  ÷  60˚

 

 

HFA 5/95 Water base fluid, Water

+5  ÷  60˚

 

 

 

 

                                                                                         

Chamfers & Rad (mm)

 

Tolerance

Surface Finishing

S  ≤

 

5.0

7.5

8.0

10.0

12.5

15.0

   

Piston

µm Ra (for rod only) µm Rt

C  ≥

 

2.4

4.0

5.0

5.0

6.5

7.5

   

js11

0.1   ÷ 0.4

≤   4

r1  ≤

0.2

0.4

0.4

0.4

0.4

0.8

0.8

   

H9

≤  1.6

≤  10

r2  ≤

0.4

0.4

0.4

0.4

0.4

0.8

0.8

   

+0.25   0

≤  3.2

≤  16

 

D1

d 1

L1

L2

d2

d3

25.4

15.88

15.09

4.75

22.05

24.59

31.75

19.05

19.05

6.35

28.4

30.94

38.1

25.4

15.9

4.78

34.6

37.08

38.1

25.4

15.9

6.45

34.6

37.08

38.1

25.4

19.05

6.35

34.82

37.29

40

25

24

6

34.85

39

41.28

25.4

23.8

6.35

36.27

39.67

44.45

28.58

19.05

6.45

39.93

43.43

4.45

28.58

23.8

6.35

39.5

42.85

45

26

31

6.5

38.85

44

50

34

18

6.45

45.54

48.5

50

35

24

6

44.85

48.5

50.8

34.93

19.05

6.45

46.28

49.83

50.8

34.93

23.8

6.35

45.85

49.2

53.98

38.1

23.8

6.35

48.97

52.4

55

40

24

6

49.86

53.5

57.15

41.28

19.05

6.45

52.6

56.16

57.15

41.28

23.8

6.35

52.2

55.55

60

40

31

7

53.85

58.5

60.33

44.45

19.05

6.45

55.37

58.72

60.33

44.45

23.8

6.35

55.37

58.72

63

48

24

6

57.85

61.5

63

43

31

7

56.85

61.5

63.5

47.63

19.05

6.45

58.95

62.5

63.5

47.63

23.8

6.35

58.55

61.9

65

50

24

6

59.85

63.5

66.68

50.8

23.77

6.35

61.67

65.07

69.85

50.8

23.8

6.45

64.11

68.83

69.85

50.8

30.15

6.35

63.12

68.25

70

50

31

7

63.85

68

73.03

53.98

30.15

6.35

66.29

71.42

75

55

31

7

68.85

73

76.2

57.15

23.8

6.45

70.46

75.18

76.2

57.15

30.15

6.35

69.47

74.6

79.38

60.33

30.15

6.35

72.6

77.77

80

60

31

7

73.85

78

82.55

63.5

23.8

6.45

76.81

81.53

82.55

63.5

30.15

6.35

75.82

80.95

85

65

22

6.45

79.16

83

85

65

31

7

78.85

83

88.9

69.85

23.8

6.45

83.13

87.88

88.9

69.85

30.15

6.35

82.17

87.3

90

70

31

7

83.85

88

92.08

73.03

30.15

6.35

85.34

90.47

95

75

31

7

88.85

93

95.25

76.2

30.15

6.35

88.52

93.65

98.43

79.38

30.15

6.35

91.69

96.82

100

75

22

6.45

93.24

98

100

75

26

9.5

93.85

98

100

80

31

7

93.85

98

101.6

82.55

23.8

6.45

95.8

100.53

101.6

82.55

30.15

6.35

94.87

100

107.95

88.9

23.8

6.45

102.16

106.93

107.95

88.9

30.15

6.35

101.22

106.35

110

85

22

6.45

103.5

108

110

90

31

7

103.85

108

114.3

88.9

31.75

6.45

107.47

113.03

114.3

88.9

38.1

9.53

107.54

112.7

115

95

31

7

108.85

113

120

100

31

7

113.85

118

120.65

95.25

31.75

6.45

113.87

119.38

120.65

95.25

38.1

9.53

113.92

119.05

125

100

25

6.45

118.5

123

125

100

38

9.5

118.85

123

127

101.6

31.75

6.45

120.14

125.88

127

101.6

38.1

9.53

120.27

125.4

130

105

25

6.45

123.5

128

130

104

38

9.5

123.85

128

133.35

107.95

38.1

9.53

126.49

131.75

135

110

38

9.5

128.35

133

139.7

114.3

31.75

6.45

132.97

138.58

139.7

114.3

38.1

9.53

132.99

138.1

140

115

25

6.45

133.5

138

140

120

31

7

133.85

138

145

125

31

7

133.85

143

146.05

120.65

38.1

9.53

139.29

144.45

150

125

25

6.45

143.5

148

150

120

44

9.5

143.85

148

152.4

127

31.75

6.45

145.49

151.23

152.4

127

38.1

9.53

145.69

150.8

158.75

133.35

38.1

9.53

151.99

157.15

160

130

25

6.45

153.5

158

160

140

31

7

153.85

158

160

135

38

9.5

153.85

158

165.1

139.7

38.1

9.53

158.39

163.5

170

140

25

6.45

162.54

168

170

150

31

7

163.85

168

171.45

146.05

38.1

9.53

164.69

169.85

177.8

152.4

38.1

9.53

171.09

176.2

180

160

31

7

173.85

178

180

150

35

6.45

173

178

190

160

44

9.5

183.85

188

190.5

158.75

47.63

9.53

183.9

188.9

200

175

38

9.5

193.85

198

200

170

44

12

193.85

198

203.2

177.8

31.75

9.53

196.6

201.6

210

180

31.7

6.45

203.13

208

220

200

31

7

213.85

218

228.6

203.2

31.75

9.53

221.89

227

228.6

196.85

47.63

9.53

222

227

250

220

44

12

243.85

248

254

228.6

31.75

9.53

247.4

252.4

280

250

44

12

273.85

278