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Eagle Burgmann M7n Mechanical Seal

Name: Eagle Burgmann M7n Mechanical Seal
Brand: Zhangjiagang Everbright Precision Machinery Co., Ltd.
Rating: 4.7 (39 reviews)

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Model No. :	GD-M7N
Brand Name :

9yrs

Zhangjiagang, Jiangsu, China

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Zhangjiagang Everbright Precision Machinery Co., Ltd.

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Eagle Burgmann M7n Mechanical Seal

Product description

M7N

Features

For plain shafts
Single seal
Unbalanced
Super-Sinus-spring or multiple springs rotating
Independent of direction of rotation
Variant with PTFE secondary seals for high chemical resistance (M78N)
Advantages

Universal application opportunities

Efficient stock keeping due to easily interchangeable faces

Extended selection of materials

Insensitive to low solids contents

Flexibility in torque transmissions

Self cleaning effect

Short installation length possible (G16)

Pumping screw for media with higher viscosity (M7..F)

Recommended applications

Process industry

Chemical industry

Pulp and paper industry

Water and waste water technology

Shipbuilding

Lube oils

Low solids content media

Water / sewage water pumps

Chemical standard pumps

Vertical screw pumps

Gear wheel feed pumps

Multistage pumps (drive side)

Circulation of printing colors with viscosity 500 ... 15,000 mm2/s.

Operating Limits:

Shaft diameter:

d1 = 14 ... 100 mm (0.55 " -- 3.94 ")

Pressure:

p1 = 25 bar (363 PSI)

Temperature:

t = -50 °C +220 °C

(-58 °F +428 °F)

Sliding velocity:

vg = 20 m/s (66 ft/s)

Axial movement:

d1 = up to 25 mm: ±1.0 mm

d1 = 28 up to 63 mm: ±1.5 mm

d1 = from 65 mm: ±2.0 mm

Materials

Seal face: Special cast CrMo steel (S), Silicon carbide (Q1, Q2), Aluminium oxide (V)
Seat G9: Carbon graphite antimony impregnated (A), Carbon graphite resin impregnated (B), Silicon carbide (Q1*, Q2*)
Seat G4: Silicon carbide (Q1*, Q2*)
Seat G6: Silicon carbide (Q1*, Q2*)
Seat G13: Carbon graphite antimony impregnated (A), Carbon graphite resin impregnated (B)

Secondary seals: EPDM (E), NBR (P), FKM (V), FFKM (K)
Springs: CrNiMo steel (G) Metal parts: CrNiMo steel (G), Duplex (G1)

* Cannot be combined with seal face made of S

Standards and approvals
EN 12756

Eagle Burgmann M7n Mechanical Seal

Item Part no. to Description

DIN 24250

1.1 472 Seal face

1.2 485 Drive collar

1.3 474 Thrust ring

1.4 412.1 O-Ring

1.5 477 Spring

1.6 904 Set screw

2 475 Seat (G9)

3 412.2 O-Ring

1) d1 > 100 mm: 30°

2) d1 > 100 mm: +0.1

3) d1 > 100 mm: H7