Customization: | Available |
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Structure: | Single End |
Pressure: | Medium Pressure Mechanical Seals |
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Parameter | Specification | |
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Model | QT-4R (Heavy-Duty Rotary Seal) | |
Type | Single Spring, Balanced Design (Pusher Type) | |
Material Composition | - Primary Ring: Tungsten Carbide (WC) / Silicon Carbide (SiC) - Mating Ring: Carbon Graphite - Spring: SS316 / Hastelloy® - Elastomer: FKM (Standard), EPDM, PTFE |
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Temperature Range | - Standard: -40°C to +250°C - High-Temp Option: Up to +400°C (Special Materials) |
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Pressure Range | - Static: 0 to 5.0 MPa (50 bar) - Dynamic: 0 to 3.5 MPa (35 bar) |
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Shaft Diameter | 20-100 mm (Standard) | Custom Sizes: 15-120 mm Available |
Speed | Max. 25 m/s (≈ 6000 RPM) | |
Leakage Rate | ≤ 3 mL/hr (API 682 Compliant) | |
Surface Finish | Seal Faces: Ra ≤ 0.1 μm (Mirror Lapped) | |
Spring Configuration | Single Coil Spring (Corrosion-Resistant) | |
Applications | - Chemical Process Pumps - Oil & Gas Refining - High-Pressure Water Pumps |
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Media Compatibility | Crude Oil, Acids, Alkalis, Solvents, High-Temperature Water | |
Standards | API 682 (Type 1 & 2), ISO 21049, ASME B73.1 | |
Certifications | ATEX, NACE MR0175 (HS Service), SIL 2 (Optional) |
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.