Enactus -MR-D Burgmann MR-D Replacement

Structure description
Equivalent to Burgmann MR-D dual cartridge mechanical seal
For top, lateral and bottom drives
Product side seat rotating
Unbalanced
Double seal
Independent of direction of rotation
Cartridge unit
Operating range
Shaft diameter: dN/dw = 30 … 200 (500) mm (1.18" … 7.87" (19.68"))
Axial offset shaft/housing:
dN/dw 30 … 60 mm (1.18" … 2.36"): max. ±1.5 mm (0.059")
dN/dw >60 mm (2.36"): max. ±2.0 mm (0.079")
Radial offset shaft/housing: max. ±0.3 mm (0.012")
Pressure:
p1 (media) = vacuum … 14 (23) bar (203 (334 PSI))
p3 (buffer fluid) = max. 16 (25) bar (232 (363 PSI))
Δ p3 > p1 = min. 2 bar (29 PSI), max. 10 bar (145 PSI)
Temperature:
t1 (media) = -20 °C … +200 (300) °C (-4 °F … +392 (572) °F)
Sliding velocity: vg = 20 m/s (66 ft/s)
For applications beyond this range, please inquire.
Materials
Product side:
Seal face, seat: Silicon carbide (Q1), Tungsten carbide (U)
Metal parts: Cr steel (E), CrNiMo steel (G), Hastelloy® (M)
Atmosphere side:
Seal face, seat: Silicon carbide (Q1), Carbon graphite resin impregnated (B)
Metal parts: Cr steel (E), CrNiMo steel (G)
Product and atmosphere side:
Springs: CrNiMo steel (G), Hastelloy® (M)
Secondary seals: EPDM (E), FKM (V), FFKM (K), FKM, FEP wrapped (M5)
Other materials on request.

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