Copyright  © 2009 LR Seal & Recon Centre -  Revised 10 August, 2016   -  Web Design by Ria Heyneke

Seals LR U2 drawing

U2

The U2 are part of the ‘O’ ring mounted mechanical seals and are interchangeable with many other makes.  The material combinations shown below are standard and other materials can be ordered on request.


BENEFITS


Self Adjusting: ‘O’ ring slides along shaft to allow for wear


Non Clogging: Due to open single spring design


Simple Fitting: Just push onto shaft


Robust: Due to simple construction



Materials


Rot Face: Car / SST / TC / Sil


Stat Face: Car / SST / TC / Sil


Spring: 304 Stainless Steel


Elastomers: Nitrile / Viton / EPDM


Service Capability

 

Max. Speed – 20 m/sec

 

Max Pressure: - 10 bar

 

Temp: -40⁰C to 200⁰C

 

Media: Dependant on materials

 

 

* See P.V. Curves for max.

  Speed/pressure combination

 

Note

P.V. Curves for water 20⁰C


UNBALANCED ‘O’ RING TYPE SEALS

Car/TC & Car/Chox

 

TC/Sil

 

Car/Cer & Sil/Sil
TC/TC

Car/SST


SHAFT DIAMETER (mm)

MOSTLY USE:  AVERAGE CORROSION MEDIUMS, SUCH AS WATER, OIL, WEAK ACID, WEAK ALKALI, ETC.


U2 SPEC

D

D1

D3

L1

D7

L2

10mm

18,1

19,0

15,0

21

5,5

12mm

20,6

21,0

18,0

23

5,5

14mm

23,1

23,0

22,0

25

6,0

16mm

26,9

26,0

23,0

27

7,0

18mm

30,9

29,0

24,0

33

8,0

20mm

30,9

31,0

25,0

35

8,0

22mm

35,4

33,0

25,0

37

8,0

24mm

35,4

35,0

27,0

39

'8,0

25mm

38,2

36,0

27,0

40

8,5

28mm

43,3

40,0

29,0

43

9,0

30mm

43,3

43,0

30,0

45

9,0

32mm

43,3

46,0

30,0

48

9,0

33mm

53,3

46,0

39,0

48

11,5

35mm

53,3

49,0

39,0

50

11,5

38mm

60,5

53,0

39,0

56

11,5

40mm

60,5

56,0

39,0

58

11,5

43mm

60,5

59,0

39,0

61

11,5

45mm

65,5

61,0

41,0

63

11,5

48mm

65,5

64,0

41,0

66

11,5

50mm

72,5

66,0

45,0

70

11,5

55mm

72,5

71,0

47,0

75

11,5

60mm

79,3

78,0

49,0

80

11,5

65mm

84,5

84,0

51,0

85

11,5

70mm

89,5

89,6

51,0

92

11,5

75mm

94,5

98,0

57,0

97

11,5

80mm

99,5

100,0

59,0

105

'11,5

85mm

105,5

107,5

59,0

110

13,5

90mm

111,5

111,0

62,0

115

13,5

95mm

116,5

119,0

62,0

120

13,5

100mm

119,5

123,8

75,0

125

13,5