This high-performance tungsten carbide mechanical seal is engineered as a direct OEM replacement for SPX APV mechanical seal models (W+, Puma, V2 series). Designed for extreme conditions, it upgrades standard ceramic or carbon seals with superior durability and chemical resistance.
Key Features
• Heavy-Duty Upgrade: This tungsten carbide mechanical seal replaces the standard Carbon/Ceramic seals in APV W+ and Puma series pumps with solid Tungsten Carbide (TC) faces, offering superior durability.
• Impact Resistant: TC faces are extremely tough and resist cracking from pressure shocks or solids in the fluid, unlike brittle ceramics.
• Hygienic Design: It meets stringent sanitary standards with smooth, cleanable surfaces, making this APV mechanical seal ideal for food, beverage, and pharmaceutical processing lines.
• Face Retention: The TC face is securely shrink-fitted or pin-driven to prevent spinning out under high-torque start-up conditions common in viscous fluid pumping.
• Corrosion Resistant Binder: Uses a Nickel-binder Tungsten Carbide grade to ensure corrosion resistance against acidic cleaning agents (CIP).
We specialize in tailoring this tungsten carbide mechanical seal to your specific APV pump model and process conditions.
Material Pairing: Standard configuration is a tungsten carbide rotating face paired with a stationary silicon carbide (SiC) or carbon face. We can customize the secondary seal (O-rings) in EPDM, FKM (Viton), or PTFE for specific chemical or temperature requirements.
Size & Model Coverage: Available for a wide range of APV mechanical seal sizes. Contact us with your APV pump model number (e.g., W+ 25/210, Puma 1") for exact cross-reference.
Lead Time: Standard configurations are available from stock. Custom-engineered tungsten carbide mechanical seal solutions typically have a 2-4 week lead time.
OEM Level Precision: Our APV mechanical seal replacements are manufactured to exact OEM specifications, ensuring perfect fit and function.
Material Expertise: As a specialist in hard-face materials, we provide expert guidance on when to upgrade to a tungsten carbide mechanical seal versus other materials like SiC or ceramic.
Cost Savings: Our tungsten carbide mechanical seal offers a longer service life than OEM carbon parts in demanding conditions, reducing total cost of ownership and unplanned downtime for your APV mechanical seal maintenance.
Technical Specs | Materials | ||
Mediums | Water, oil and weakly-corrosive mediums | Stationary Ring | Carbon/Sic |
Pressure | ≤0.3MPa | Rotary Ring | Ceramic/Sic |
Temperature | -20℃ to 100℃ | Secondary Seal | NBR/EPDM/Viton |
Speed | ≤10m/s | Spring and Metal Part | Stainless Steel |
Product Specifications
| Model | Shaft | D2 | D3 | D7 | L1 | L2 | L4 |
| 10 | 10 | 24.0 | 29.0 | 23.0 | 7.0 | 6.0 | 4.0 |
| 12S | 12 | 28.6 | 32.0 | 25.0 | 8.0 | 5.2 | 5.0 |
| 12M | 12 | 30.0 | 35.0 | 24.0 | 8.0 | 5.0 | 5.0 |
| 12L | 12 | 33.4 | 38.0 | 25.0 | 6.7 | 6.3 | 5.0 |
| 16 | 16 | 36.5 | 41.5 | 31.0 | 8.0 | 6.8 | 5.0 |
| 16L | 16 | 38.1 | 43.5 | 31.0 | 8.0 | 6.8 | 5.0 |
| 16LD | 16 | 38.1 | 43.5 | 31.0 | 8.0 | 6.8 | 5.0 |
| 20S | 20 | 38.0 | 43.8 | 35.0 | 9.5 | 6.0 | 5.0 |
| 20 | 20 | 40.0 | 43.8 | 35.0 | 9.5 | 6.0 | 5.0 |
| 25S | 25 | 46.0 | 51.0 | 44.0 | 10.0 | 8.0 | 7.0 |
| 25M | 25 | 47.0 | 51.0 | 44.0 | 12.0 | 6.0 | 7.0 |
| 25L | 25 | 52.0 | 57.0 | 48.0 | 12.0 | 6.0 | 7.0 |
| 30 | 30 | 52.0 | 57.0 | 48.0 | 11.0 | 8.0 | 8.0 |
| 1/2" | 12.7 | 30.0 | 35.0 | 25.4 | 8.0 | 5.0 | 6.2 |
| 5/8" | 25.9 | 36.5 | 41.5 | 31.8 | 8.0 | 6.7 | 10.3 |
| 3/4" | 19.1 | 40.0 | 43.8 | 34.9 | 9.5 | 6.0 | 10.3 |
| 1" | 25.4 | 47.0 | 51.0 | 41.3 | 12.0 | 5.9 | 11.1 |
Workshop
This workshop is equipped with professional processing equipment and integrated with standardized material warehousing management, enabling a one-stop production process from precision machining to finished product delivery. It ensures part machining accuracy and production efficiency, meeting various high-specification manufacturing requirements.
Product Research, Development and Testing
Our Product R&D and Testing focuses on optimizing tungsten carbide mechanical seal performance through advanced simulation and material analysis. All seals undergo rigorous trials, including thermal cycling and pressure tests, to ensure durability, minimal leakage, and long service life in demanding industrial environments.
Industry Solutions
Case Study
Sugar Syrup Pump: An APV W+ pump moving viscous sugar syrup was destroying carbon seals. We installed this Tungsten Carbide replacement. The hard faces resisted the abrasive sugar crystals, extending seal life from 2 months to over 2 years.
Testimonials
We upgraded all our APV syrup pumps to these TC seals. No more cracked faces during startup.
—Maintenance Lead, Soft Drink Plant
FAQs
Q: Does this fit the W+ series?
A: Yes, it is a direct replacement for the standard single seal in APV W+ series pumps. We need to know the shaft size (e.g., 25mm, 35mm) to supply the correct kit.
Q: Is this APV mechanical Seal a direct drop-in replacement?
A: Yes. Our tungsten carbide mechanical seal is designed to be dimensionally interchangeable with the original APV mechanical seal components for models like W+ and Puma series. No modifications to the pump housing or shaft are required.
Q: What is the typical service life of this tungsten carbide APV mechanical seal?
A: Under normal sanitary conditions, expect a service life 2-3 times longer than standard carbon seals. In highly abrasive or corrosive services, the lifespan of this tungsten carbide mechanical seal can be 5 times greater, making it a highly cost-effective solution.
Q: How does the price compare to the original APV mechanical seal?
A: While the initial cost of a tungsten carbide mechanical seal is higher than a standard carbon seal, the significantly extended mean time between failures (MTBF) results in lower long-term maintenance costs and less production downtime.
Our company is specialized in the production of sealing materials, mechanical seals , cartridge seals.
E-mail: gechacha@aliyun.com
Mobile: +86-18758835650
WhatsApp: +86-18758835650
Add: No8-2, Jinsha road Yuelin Street, Fenghua District, Ningbo, Zhejiang
