U2 Mechanical Seal

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
Mostly Use: Average Corrosion Mediums, Such As water, oil, weak acid, weak akali, etc.
Service Capability
Max. Speed: 20 m/sec
Max Pressure: – 10 bar
Temp: -40⁰C to 200⁰C
Media: Dependent on materials
* See P.V. Curves for max. Speed/pressure combination
Note
P.V. Curves for water 20⁰C


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 |