mechancial seals.pump seal,BH7N
Alternative to:
for BORGMANN H7N
Features
• For stepped shafts
• Single seal
• Balanced
• Super-Sinus-spring or multiple springs rotating
• Independent of direction of rotation
• Integrated pumping device available (H7F, H75F)
• Variant with seat cooling available (H75G115)
Advantages
• Universal application opportunities (standardization)
• Efficient stock keeping due to easily interchangeable
faces
• Extended selection of materials
• Flexibility in torque transmissions
• Self cleaning effect
• Short Installation length possible (G16)
Operating range (see note on page 1)
Shaft diameter: d1 = 14 … 100 mm (0.55" … 3.94")
(Single spring: d1 = max. 100 mm (3.94"))
Pressure:
p1 = 80 bar (1.160 PSI) for d1 = 14 … 100 mm,
p1 = 25 bar (363 PSI) for d1 = 100 … 200 mm,
p1 = 16 bar (232 PSI) for d1 >200 mm
Temperature: t = -50 °C … +220 °C
(-58 °F … +428 °F)
Sliding velocity: vg = 20 m/s (66 ft/s)
Axial movement:
d1 … 22 mm: ±1.0 mm
d1 24 … 58 mm: ±1.5 mm
d1 from 60 mm: ±2.0 mm
Materials
Seal face: Silicon carbide (Q1, Q2), Carbon graphite
antimony impregnated (A), Aluminium oxide (V),
Special cast CrMo steel (S)
Seat G9: Carbon graphite antimony impregnated (A),
Carbon graphite resin impregnated (B),
Silicon carbide (Q1*, Q2*)
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 in S
Recommended applications
• Process industry
• Oil and gas industry
• Refining technology
• Petrochemical industry
• Chemical industry
• Power plant technology
• Pulp and paper industry
• Food and beverage industry
• Hot water applications
• Light hydrocarbons
• Boiler feed pumps
• Process pumps
Product variants
H75
Shaft diameter: d1 = 28 … 200 mm (1.10" … 7.87")
As H7N, but with multiple springs in sleeves (Item no. 1.5)
Axial movement: ±2 … 4 mm, dependent on diameter.
H76
Shaft diameter: d1 = 14 … 100 mm (0.55" … 3.94")
Dimensions, items and descriptions as for H7N, but with
special single spring (Item no. 1.5) for compensating large
axial movements (±4 mm).
H7F
Shaft diameter: d1 = max. 100 mm (3.94")
Dimensions, items and descriptions as for H7N, but with
single spring and pumping screw. Dependent on direction
of rotation! (Viscosity ≤ ISO VG10).
H75F
Shaft diameter: d1 = 28 … 200 mm (1.10" … 7.87")
Dimensions, items and descriptions as for H7N, but
with multiple springs and pumping screw. Dependent on
direction of rotation! (Viscosity ≤ ISO VG10).
NINGBO YINHZOU BETON SEAL CO.,LTD, founded in 1983, is a high-tech factory specializing in designing and manufacturing all kinds of mechanical seals and filters.
Our main products include o-ring type, rubber bellow type,flygt pump series, grund fos type and cartridge type. The seal face material and elastomers are comprehensive choice. Meanwhile, we can also supply spare parts with material silicon carbide, Tungsten carbide, Ceramic ,carbon, stainless steel and rubber.
Which can replace the similar products for John Crane, Burg man ,AES seal, Roten,Sterling,Flowseve and Vulcan.
Now, the company's seals network has spread all over the country, and the seals of our core products have increased rapidly.shch as mechanical seals,mechanical seal , In 2001, we passed ISO9001 international quality authentication
Our products are very popular abroad, exported to over 50 countries because of excellent quality, good after-sales service and more competitive price, including USA, Japan, UK, Canada, Sweden and Australia. And so on....
Over the years, we have insisted on the principle of "quality fist, service-oriented" to open up markets and make continuous innovations. Our company is committed to sealing industry to industry to provide customers a safe, clean living and working environment
We hope sincerely that clients will come to establish long-term business relations with each other on the basis of mutual benefits and development to create a bright perspective. welcome to mechanical seal in china...
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