Dynamic Seals Engineering - Industrial Seals

Advantages

• 100 % compatible with MG1
• Small outer diameter of bellows support (dbmin) enables direct retaining ring support, or smaller spacer rings
• Optimal alignment characteristic through self-cleaning of disk/shaft
• Improved centering across entire pressure operating range
• No torsion on bellows
• 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
• Suitable for low-end sterile applications
• Dimension adaptions and additional seats available

Operating range

Shaft diameter:

d1 = 15 … 110 mm (0.59″ … 4.33″)

Pressure: p1 = 18 bar (261 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 (eSiC-Q7, Q1)

Seat: Silicon carbide (eSic-Q7, Q1), 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

Various material approvals available

(depending on type and material combinations).

Please inquire!

FDA

WRAS

UBA (KTW)

ACS

W270

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

 Notes

The eMG1 can also be used as a multiple seal in tandem or in a back-to-back arrangement, please inquire. Dimension adaptations for specific conditions, e.g. shaft in inches or special seat dimensions are available upon request.

Advantages

• Economical seal solution
• No damage of the shaft by set screws
• Short installation length possible (G16)

Operating range

Shaft diameter:

d1 = 6 … 38 mm (0.25″ … 1.5″)

Pressure: p1 = 10 bar (145 PSI)

Temperature:

t = -20 °C … 140 °C

(-4 °F … 355 °F)

Sliding velocity:

vg = 15 m/s (50 ft/s)

Axial movement: ±1.0 mm

 Materials

Seal face: Carbon graphite resin impregnated (B)

Seat G9: Silicon carbide (Q1, Q2),

Special cast CrMo steel (S), Aluminium oxide (V)

 Standards and approvals

EN 12756

Recommended applications

• Pulp and paper industry
• Water and waste water technology
• Building services industry
• Water pumps
• Heating circulation pumps

Features

Cartridge seal

Standardized dimensions

Short axial installation length (8.4 mm)

Dry running

Seal ring bears radial shaft movements

Compensates axial shaft movements

No sealing components mounted on the shaft and hence no additional shaft vibrations

Seal rings running contact-free – sliding faces and machine consume no additional power

Advantages

• Easy installation
• High reliability
• Maintainability
• Long-term operating time
• Alternative to radial shaft seal ring

 Operating range

Shaft diameter:

d = 28 … 80 mm (1.10″ … 3.15″)

Operating pressure: p = 1.075 bar (16 PSI) abs.

Operating temperature:

t = max. +200 °C (392 °F)

Sliding velocity:

vg = max. 40 m/s (131 ft/s)

Radial play: ±2.0 … 4.0 mm (±0.08″ … 0.16″)

Axial movement: theoretically unlimited

Materials

Seal ring: PTFE compound

Housing: 1.4301

Tension spring: 1.4571

Standards and approvals

• FDA

Recommended applications

• Chemical industry
• Food processing industry
• Machinery and plant building
• Pulp and paper industry
• Metal production and processing
• Small and medium-sized fans / blowers
• Air regulating devices
• Bearing seals
• Clean gases*

Features

Torque transmission depending on application with set screw or as shrink fit

Metallic coating (FMP 84) basically for applications without high oxidation

Ceramic coating (EMP 98) basically for applications with high oxidation

Design one- or two-piece

Advantages

• Easy installation by split design (2-piece version)
• High reliability
• Long-term operation time
• Maintainability

Operating range

FMP 84 (metallic coating)

General description: chromium carbide

Coating process: flame spray technique (no influence on material structure)

Shrink acceptability: very good

Shaft diameter: d = 45 … 340 mm (1.77″ … 13.39“)

Operating temperature: t = max. 1, 000 °C (1, 832 °F)

Peripheral velocity: vu = max. 240 m/s (787 ft/s)

Hardness: >65 HRC

EMP 98 (ceramic coating)

General description: chromium oxide (ceramic)

Coating process: flame spray technique (no influence on material structure)

Shrink acceptability: with restrictions

Shaft diameter:

d = 45 … 340 mm (1.77″ … 13.39“)

Operating temperature:

t = max. 600 °C (1, 112 °F)

Peripheral velocity:

vu = max. 150 m/s (492 ft/s)

Hardness: >58 HRC

Materials

1.4021-FMP, 1.4086, 1.4462-FMP, 1.4571-FMP, others

Standards and approvals

DIN 42955