| Customization: | Available |
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| Structure: | Double-End |
| Pressure: | Medium Pressure Mechanical Seals |
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Parameter
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Description
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Model Number
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M74D
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Seal Type
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Single spring, unbalanced, inside-mounted mechanical seal
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Size Range
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15 mm - 80 mm
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Shaft Diameter
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Available for shaft diameters: 15mm, 18mm, 20mm, 22mm, 25mm, 28mm, 30mm, 32mm, 35mm, 38mm, 40mm, 42mm, 45mm, 48mm, 50mm, 52mm, 55mm, 58mm, 60mm, 65mm, 70mm, 75mm, 80mm
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Seal Face Material
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Carbon graphite (stationary) and silicon carbide (rotating)
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Secondary Seal Material
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EPDM, NBR, or fluorine rubber
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Housing Material
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Stainless steel 304, 316
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Spring Material
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Stainless steel 304, 316
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Pressure Rating
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Maximum operating pressure: 1.6 MPa
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Temperature Range
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-20°C to +180°C
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Speed Limit
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Maximum rotational speed: 2000 rpm
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Application Fluids
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Suitable for clean water, oils, weak acids, and alkalis
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Leakage Rate
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≤5 ml/h under normal operating conditions
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Installation Type
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Axially mounted, cartridge type for easy installation and replacement
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Axial Runout
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≤0.05 mm
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Radial Runout
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≤0.1 mm
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Face Flatness
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≤0.0009 mm (three light bands)
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Face Roughness
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Ra 0.2 - 0.4 μm (rotating face), Ra 0.4 - 0.8 μm (stationary face)
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Spring Rate
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12 N/mm
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Spring Compression
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6 - 8 mm
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Shaft Tolerance
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h7
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Housing Bore Tolerance
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H8
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Seal Face Width
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6 mm
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Lubrication Requirement
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Fluid lubrication from the process medium
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Chemical Resistance
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Resistant to most common organic solvents, mild acids, and alkalis
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Vibration Limit
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≤5.6 mm/s (RMS value)
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Storage Conditions
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Store in a dry, cool place away from direct sunlight and corrosive gases
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Storage Temperature Range
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-10°C to +40°C
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Recommended Torque
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8 - 12 N·m for bolt tightening
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Seal Life Expectancy
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8000 - 12000 operating hours under normal conditions
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Pressure Testing
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Hydrostatically tested at 1.1 times the maximum operating pressure
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Cleaning Method
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Use clean water or a non-corrosive cleaning agent
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Disassembly Instructions
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Follow the manufacturer's manual to avoid damaging the seal components
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Assembly Instructions
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Ensure all components are clean and properly aligned before installation
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Maintenance Interval
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Inspect every 1000 operating hours; replace if signs of wear or leakage occur
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Replacement Parts
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Seal faces, secondary seals, springs, and gaskets are available separately
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Weight
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0.2 - 0.8 kg (depending on size)
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Packaging
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Individually packed in anti-static plastic bags
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Certification
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Conforms to ISO 21049 and API 682 standards
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Technical Support
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Available from the manufacturer for installation and troubleshooting
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Environmental Resistance
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Resistant to humidity and moderate exposure to UV radiation
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Compatibility with Pumps
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Suitable for centrifugal pumps, reciprocating pumps, and rotary pumps
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Shanghai Queeny Mechanical Equipment Co.,Ltd.is an enterprise specializing in the R&D,manufacture and export of mechanical seal products,headquartered in Pudong New Area,Shanghai.Our products mainly include component seals,dry gas seals,metal bellows seals,mixer and agitator seals,single & dual cartridge seals,silicon carbide parts and tungsetn carbide parts,which can replace John Crane, Burg--mann, AES, Chesterton,Flowserve,Rotenand other similar products,they are widely used in water treatment,petroleum,chemical,food,medical and other industries.
Relying on first-class technology and professional services,since its establishment, Queeny has carried out in-depth cooperation with hundreds of companies in more than 70 countries around the world.Our products are exported to Asia,Europe,North America,South America,Oceania and Africa in large quantities every year,and have been widely praised.Super high cost performance is the basis of our long-term cooperation with customers.We always rigorously treat clients' requirements,strictly control the production process,and comprehensively monitor the export procedure.It is our mission to reduce production and operation costs for more enterprises all over the world.Q1: Are you a trading company or a factory?
We are a factory, so we can offer you factory prices with high quality.
Q2: Can I get samples?
Yes. You can ask for samples. Usually it's free, but you need to pay for shipping.
Q3: Can l use my own logo or design on the goods?
Yes, we provide OEM/ODMservices; your logo and design can be printed on the products.
Q4: What are your payment terms?
We accept T/T, Paypal, Western Union, and credit card payment is also welcome.
Q5: How about the delivery time?
For stock items, we can ship immediately after receiving the payment.
For other products, we need 14-25 days for mass production, which depends on the quantity and type of order.
Q6: How can we ensure the quality?
Pre-production samples are required before mass production;Final inspection is required before shipment;
Q7: 1 can't find our products in your catalog, can you customize the products for us?
Yes, customized products are available, OEM is welcome.
Q8: Can l buy pumps or pump parts from your company?
Yes, we also provide pumps and pump parts.
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