Elastomer Bellows (B1)
Elastomer Bellows (B1) Mechanical seals of the B1 series are amongst the most commonly used. The bellows is not subjected to any torsional stress and its ingenious design incorporates several functions, as seal face carrier, secondary sealing element and drive collar, The seal face is driven through the spring and "L" - rings. There are no bonded joints and all the face materials are interchangeable without having to modify any dimensions. Highly recommended for duties with media containing solids eg. in waste water and sewage applications.
Application range :
Dw: 12...80 mm.
Pressure: 16 bar.
Temperature range: -20 oC ~+140 oC
Circumferential speed: 10 m / sec. Item no. Description
1. seal face
2. bellows
3. spring
4.1 "L" - ring
4.2 "L" - ring
5. stationary seat
6. O- ring | | DW | Da | Db | L | d1 | d2 | | 12 | 25.0 | 22.5 | 15.0 | 17.5 | 21.6 | | 14 | 28.5 | 26.5 | 17.0 | 20.5 | 24.6 | | 15 | 28.5 | 26.5 | 17.0 | 20.5 | 24.6 | | 16 | 28.5 | 26.5 | 17.0 | 22.0 | 28.0 | | 18 | 32.0 | 29.0 | 19.5 | 24.0 | 30.0 | | 20 | 37.0 | 33.0 | 21.5 | 29.5 | 35.0 | | 22 | 37.0 | 33.0 | 21.5 | 29.5 | 35.0 | | 24 | 42.5 | 38.0 | 22.5 | 32.0 | 38.0 | | 25 | 42.5 | 38.0 | 23.0 | 32.0 | 38.0 | | 28 | 49.0 | 44.0 | 26.5 | 36.0 | 42.0 | | 30 | 49.0 | 44.0 | 26.5 | 39.2 | 45.0 | | 32 | 53.5 | 46.0 | 27.5 | 42.2 | 48.0 | | 35 | 57.0 | 50.0 | 28.5 | 46.2 | 52.0 | | 38 | 59.0 | 53.0 | 30.0 | 49.2 | 55.0 | | 40 | 62.0 | 55.0 | 30.0 | 52.2 | 58.0 | | 45 | 68.0 | 60.0 | 30.0 | 55.3 | 64.0 | | 50 | 74.0 | 65.0 | 30.5 | 60.8 | 69.3 | | 55 | 81.0 | 72.0 | 35.0 | 66.5 | 75.4 | | 60 | 88.5 | 79.0 | 38.0 | 71.5 | 80.4 | | 65 | 93.5 | 84.0 | 40.0 | 76.5 | 85.5 | | 70 | 99.5 | 90.0 | 40.0 | 83.0 | 92.0 | | 75 | 107.0 | 95.0 | 40.0 | 90.2 | 99.0 | | 80 | 112.0 | 100.0 | 40.0 | 95.2 | 104.0 | |
Design Features
- torque transmission by cylindrical spring or corner ring
- no torsional strain on bellows;
- no bonded joints;
- all face materials are interchangeable without dimensional changes. Face Materials :
- carbon, cast steel, tungsten carbide. Bellows Materials : (Elastomers) : NBR (up to 100 oC) , viton (up to 2000 oC) EP- rubber (up to120 [140]oC) |
