Wave Spring Mechanical Seal for Grundfos Hilge Ropac Propac 50 Pumps

Temperature: -20℃ to +180℃
Pressure: ≤2.5Mpa
Speed: ≤15m/s
Material: V1,Q1,Q2,U2,B,A,P,E,V,M1,M2,F,G,M

Features

• For unstepped shafts

• Single seal

• Balanced

• Independent of direction of rotation

• Encapsulated rotating spring


Advantages

• Especially designed for solids containing and highly viscous media 

• Springs are protected from the product

• Rugged and reliable design

• No damage of the shaft by dynamically loaded O-Ring

• Universal application

• Variant for operation under vacuum available

• Variant for sterile operation available


Operating range

Shaft diameter: d1 = 18 … 100 mm (0.71" … 4")

Pressure: p1*

 = 0.8 abs … 25 bar (12 abs. … 363 PSI)

Temperature: t = –50 °C … +220 °C (–58 °F … +430 °F)

Sliding velocity: vg = 20 m/s (66 ft/s)

Axial movement: ±0.5 mm.

* An integral stationary seat lock is not needed within the permissible low pressure range. For prolonged operation under vacuum it is necessary to arrange for quenching on the atmospheric side.


Materials

Seal face: Carbon graphite antimony impregnated (A), 

Carbon graphite resin impregnated (B)

Seat G16: Silicon carbide (Q1) 

Standards and approvals

• EN 12756


Recommended applications

• Pharmaceutical industry

• Power plant technology

• Pulp and paper industry

• Water and waste water technology

• Mining industry

• Food and beverage industry

• Sugar industry

• Contaminated, abrasive and solids containing media

• Thick juice (70…75 % sugar content)

• Raw sludge, sewage slurries

• Raw sludge pumps

• Thick juice pumps

• Conveying and bottling of dairy products

Item Part no. to DIN 24250 Description

1.1 472/473 Seal face

1.2 485 Drive collar

1.3 412.2 O-Ring

1.4 412.1 O-Ring

1.5 477 Spring

1.6 904 Set screw

2 475 Seat (G16)

3 412.3 O-Ring


Product variants

HJ927GN

Items and description as HJ92N.

Seal face: Carbon graphite antimony impregnated (A), 

Carbon graphite resin impregnated (B)

Seat G46: Silicon carbide (Q12)

Installations length l11 (= l3 + l39) is longer than l1k.

HJ97GN5

Items and description as HJ92N.

Seal face: Silicon carbide (Q12)

Seat G16: Silicon carbide (Q1)

Installations length l12 (= l13 + l19) is shorter than l1k.

HJ977GN

Items and description as HJ92N.

Seal face: Silicon carbide (Q12)

Seat G46: Silicon carbide (Q12)

Installation length l1k

Operating range: 

Temperature: t = –20 °C … +180 °C (–4 °F … +356 °F)

Sliding velocity: vg = 10 m/s (33 ft/s)

HJ4…

Mechanical seals with product-protected multiple springs, 

for high pressure applications.

Pressure: p = max. 50 bar (725 PSI)

Shaft diameter: d1 >100 mm (3,94") 

Smaller diameters and higher pressure on request.


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