Non-External-Flushing Mechanical Seal


Non-External-Flushing Mechanical Seal


Easily fits into a stuffing box and does not require external sealing water

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Selection chart & Outer dimensions

Selection of seal face material

Non-External-Flushing Mechanical Seal / Selection of seal face material



Outer dimensions

Non-External-Flushing Mechanical Seal / Outer dimensions


Unit: mm

Part name
Q'ty
Material
1

Set screw

2
Hastelloy C
2

Spring

*
Hastelloy C
3

Set pin

2
SUS316
4

Comp ring

1
SUS316
5

O-ring

1
Fluoric rubber
6R

Seal face

2
SiC
6C

Seal back metal

1
YST130N
6F

O-ring

2
Fluoric rubber
6M

Pin

2
Hastelloy C
7

O-ring

1
Fluoric rubber
8C

Rotary back metal

1
YST130N
10

Spring pin

2
Hastelloy C
11

O-ring

1
Fluoric rubber
12

Spring retainer

1
SUS316
13

Retainer

1
YST130N
14

Seal cover

1
SUS316

Unit: mm

Dimensions
*
Q'ty of springs
d
A
B
C
D
E
F
G

28

44

42.5

59

55

40

29

18

6

30

49

45.5

63

59

42

29

18

6

32

51

47.5

65

61

42

29

18

6

35

57

55

72

68

50

29

19

6

38

60

57

75

70

50

30

19

6

40

65

60

80

76

50

30

19

8

42

67

62

80

76

50

30

19

8

45

69

65

84

76

50

32

25

8

48

73

69

88

80

50

32

25

8

50

75

70

90

82

50

32

26

8

55

80

76

95

87

50

33

26

8

75

105

99

122

115

55

33

26

12

90

128

115

148

142

58

35

30

16

100

138

132

158

146

81

39

30

8

135

179

162

197

185

89

40

30

24

Note:

* is shown in the table of dimensions.

We can also manufacture seals with dimensions other than those listed above.

We can also manufacture cartridge type seals upon request.

The above combinations of materials are standard. We can also manufacture these seals using other materials upon request.

Please use self-flushing method in order to prevent sliding parts from possible dry-operation caused by a cavity generated within the stuffing box due to generation of negative pressure in the case of self-priming operation, or mixture of air in the case of force pumping operation.



Specifications stated here may be subject to change without notice due to product improvement.

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