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AS-Mtex-D: Burgmann Mltex Dual seal replacement

Description:
AS-Mtex-D: Replacement of Burgmann Mltex Dual cartridge mechanical seal

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AS-Mtex-D
Features
Cartridge
Balanced
Independent of direction of rotation
Metal bellows
Stationary Springs
Pumping device independent of direction of rotation
Operating range
Shaft diameter: d1 = 25 ... 80 mm (1" … 3.15")
Temperature: t* = –40 °C ... +220 °C (–40 °F ... + 428 °F)
Pressure: p1 = 25 bar (232 PSI)
Sliding velocity: vg = 20 m/s (66 ft/s)
Barrier fluid circulation system:
p3max = 16 bar (232 PSI)
Δp (p3–p1) ideal = 2 … 3 bar (29 … 44 PSI)
Δp (p3–p1) max.
= 10 bar (145 PSI) at = 5 bar (73 PSI) at ≤ 220 °C (≤232 °F)
API Plan 52 (53/54)
Pump startup:
Δp (p3–p1) max.16 bar (232 PSI) allowed
* Operating limits of O-Rings to be observed
Materials
Seal face: Carbon graphite (A), Silicon
carbide (Q1)
Seat: Silicon carbide (Q1), Tungsten carbide (U2)
Secondary seals: FPM (V), EPDM (E),
FFKM (K)
Bellows: Inconel® 718 (M6)
Springs: Hastelloy® C-4 (M)
Metal parts: CrNiMo steel (G), Duplex (G1)
ASMtex9-DN
Dimensions, items and descriptions as for SSMtex-DN, but with optimized seal face geometry for pressurized operation according to API Plan 53/54. A barrier fluid system (e.g. EagleBurgmann TS2000) is necessary.
Pressure: p1 = 10 bar (145 PSI)
Sliding velocity: vg = 20 m/s (66 ft/s)
Barrier fluid circulation system:
p3max = 16 bar (232 PSI)
Δp (p3 – p1) ideal = 2 … 3 bar (29 … 44 PSI)
Δp (p3 – p1) max = 16 bar (232 PSI)
API Plan 53/54
Pump startup:
Δp (p3 – p1) max = 16 bar (232 PSI) allowed
Recommended applications
Process industry
Chemical industry
Hot media
Cold media
Highly viscous media
Pumps
Special rotating equipment

AS-Mtex-D Dimensions(mm)
d1 d2 l4 l5 l6 l7 da a2 s
35 54.8 25.4 86.5 33.1 53.4 113.0 72.0 13.2
38 57.5 25.4 86.5 33.1 53.4 123.0 75.0 14.0
40 58.8 25.4 86.3 32.9 53.4 123.0 77.0 14.2
43 61.9 25.4 86.5 33.1 53.4 133.0 80.0 14.2
45 65.0 25.4 86.5 33.1 53.4 138.0 82.0 14.2
48 68.4 25.4 86.8 33.4 53.4 138.0 85.0 14.2
50 70.0 25.4 87.2 33.8 53.4 148.0 87.0 14.2
53 71.9 25.4 87.4 34.0 53.4 148.0 97.0 18.0
55 74.6 25.4 87.0 33.6 53.4 148.0 92.0 18.0
60 83.9 25.4 88.2 34.8 53.4 157.0 102.0 18.0
65 87.5 25.4 88.1 34.7 53.4 163.0 109.3 18.0
70 93.0 25.4 89.6 36.2 53.4 178.0 118.3 18.0
75 96.8 28.0 107.4 43.5 63.9 190.0 129.0 18.0
80 104.7 28.0 106.8 42.9 63.9 195.0 135.0 18.0

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