MG1 MG12 MG13 MG1S20 Series Rubber Bellow Mechanical Seal for Water Pump

MG1/MG12/MG13/MG1S20 Rubber bellow mechanical seal for water pump

Features

· For plain shafts

· Single and dual seal

· Elastomer bellows rotating

· Unbalanced

· Independent of direction of rotation

· No torsion on bellows

Advantages

· Shaft protection over entire seal length

· Protection of seal face during installation due to special bellows design

· Insensitive to shaft deflections due to large axial movement ability

· Universal application opportunities

· Important material certifications available

· High flexibility due to wide offer on materials

· Suitable for low-end sterile applications

· Special design for hot water pumps (RMG12) available

· Dimension adaptions and additional seats available

Operating range

Shaft diameter:
d1 = 10 … 100 mm (0.39" ... 3.94")
Pressure: p1 = 16 bar (230 PSI),
vacuum ... 0.5 bar (7.25 PSI),
up to 1 bar (14.5 PSI) with seat locking
Temperature: t = -20 °C … +140 °C
(-4 °F … +284 °F)
Sliding velocity: vg = 10 m/s (33 ft/s)
Admissible axial movement: ±2.0 mm (±0,08")

Materials

Seal face: Carbon graphite antimony impregnated (A), Carbon graphite resin impregnated (B), Silicon carbide (Q1, eSiC-Q7)
Seat: Silicon carbide (Q1, eSic-Q7), Tungsten carbide (U3)
Elastomer: NBR (P), EPDM (E), FKM (V),
HNBR (X4)
Metal parts: CrNiMo steel (G), Hastelloy® (M)

Further materials upon request.

Standards and approvals

· EN 12756 (MG12, MG13)

Various material approvals available (depending on type and material combinations).
Please inquire!

Recommended applications

· Fresh water supply

· Building services engineering

· Waste water technology

· Food technology

· Sugar production

· Pulp and paper industry

· Oil industry

· Petrochemical industry

· Chemical industry

· Water, waste water, slurries
(solids up to 5 % by weight)

· Pulp (up to 4 % otro)

· Latex

· Dairies, beverages

· Sulfide slurries

· Chemicals

· Oils

· Chemical standard pumps

· Helical screw pumps

· Stock pumps

· Circulating pumps

· Submersible pumps

· Water and waste water pumps

· Oil applications

Notes

The MG1 can also be used as a multiple seal in tandem or in a back-to-back arrangement. Installation proposals available upon request.

Dimension adaptations for specific conditions, e.g. shaft in inches or special seat dimensions are available upon request.

Product variants

MG12
Dimensions, items and designations same as for MG1, but with an extended bellows tail to achieve the fitting length I_1k according to EN 12756 in combination with seat G6 or G60 (d_a exceeds EN 12756).

MG13
Dimensions, items and designations same as for MG1, but with an extended bellows tail to achieve the fitting length I_1N according to EN 12756 in combination with seat G6 or G60 (d_a exceeds EN 12756).

MG1S20
Dimensions, items and designations same as for MG1, but with an extended bellows tail to achieve the special fitting length I_1S in combination with seat G50.

RMG12
Identical to MG12, but with a special bellows surface on the shaft side. For use in hot water pumps up to 120 °C (248 °F) and 25 bar (363 PSI) or 140 °C (284 °F) and 16 bar (232 PSI). Only in combination with seat G606 (d1 = 12 … 38 mm (0.47" ... 1.50")).
Seal face: Tungsten carbide (U3)
Seat G606: Carbon graphite resin impregnated (B)

Single seal
Unbalanced
Independent of direction of rotation
Rubber bellows
MG1 series is the most commonly used seal. It has an ingenious design and compact structure. The seal face is driven through "L" ring and the spring. It is suitable for waste water containing solids or for sewage water.
Combination of materials
Sealing face
Graphite, Silicon carbide, Tungsten carbide,Aluminum oxide
Secondary sealing
Acrylonitrile rubber, Fluorine rubber, Ethylene propylene rubber
Metal component
Stainless steel
Operating limits
Specification: 10mm-110 mm
Pressure: ≤1.6 Mpa

Temperature: -20°C-120°C

Linear speed: ≤10 m/s
Axial movement: ±0.5 mm

  FLEX MECH-SEAL(CHINA) Co.,Ltd. is subsidiary of Hangzhou Raydafon Mechinery Co.,Ltd, specialized in mechanical seals products including for auto cooling pump mechanical seals, for automobile air-compress mechanical seals,for pump mechanical seals and for industry pump mechanical seals. We consistently demonstrated our passion for its reputation as a reliable and stable manufacturer of superior quality products and passed ISO9001, ISO14001 & ISO/TS16949, becoming the appointed OEM suppliers of famous domestic and overseas enterprises, 80% products are exported to outside and receive respected honor.