Silicon Carbide Cartridge Mechanical Shaft Seal

Silicon Carbide Cartridge Mechanical Shaft Seal

The silicon cartridge mechanical shaft seal is a high-performance sealing solution engineered for reliability in the most demanding industrial applications. This robust cartridge seal features a premium Silicon Carbide (SiC) sealing face, known for its exceptional hardness, wear resistance, and thermal conductivity. Housed in a pre-assembled, factory-set cartridge, it delivers plug-and-play installation, eliminating common setup errors. Designed to withstand extreme conditions, this mechanical shaft seal provides superior containment for abrasive slurries, corrosive chemicals, and high-temperature fluids, ensuring extended equipment life and minimized downtime in centrifugal pumps, mixers, and agitators.

Model:380Q
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Key Features


• Extreme Abrasion Resistance: Hardness close to diamond, resisting wear from sand, grit, and crystals.

• Universal Chemical Compatibility: Inert to most acids and alkalis, making it versatile for chemical plants.

• High Thermal Conductivity: Dissipates heat well, preventing face damage during upset conditions.

• Sintered vs Reaction Bonded: We offer both Sintered SiC (for extreme chemical resistance) and Reaction Bonded SiC (for cost-effective abrasion resistance).

• Flush Integration: API flush ports included in the gland for easy piping.


Product Advantages

Extreme Durability & Wear Resistance: The Silicon Carbide (SiC) face material offers outstanding hardness, second only to diamond. This makes the mechanical shaft seal highly resistant to abrasive particles, preventing rapid face wear and extending seal life significantly compared to ceramic or carbon faces.

Superior Chemical & Thermal Stability: Silicon Carbide is highly inert, providing excellent resistance to a vast range of strong acids, alkalis, and solvents. It also maintains structural integrity and low thermal expansion at high operating temperatures, ensuring consistent performance in challenging thermal cycles.

Foolproof Cartridge Design: The mechanical shaft seal is supplied as a complete, pre-assembled cartridge unit with a pre-set working length. This design guarantees correct installation every time, dramatically reducing installation time, eliminating measurement errors, and making it ideal for maintenance teams of all skill levels.

Low Friction & Energy Efficiency: The low coefficient of friction of SiC reduces the power required to drive the seal faces, lowering operating temperatures and contributing to overall system energy efficiency. This also minimizes heat generation, which is critical for handling temperature-sensitive or volatile fluids.

Hydraulically Balanced for High Pressure: Available in balanced designs, this cartridge mechanical shaft seal can effectively manage high system pressures. The balanced geometry prevents excessive face loading, reducing heat generation and the risk of face distortion or failure under pressure, making it suitable for demanding pump applications.


Technical Specs

Materials

Mediums

Chemical, Food, Oil, Petroleum, Pharmaceuticals Paper and pulp, Sewage treatment

Stationary Ring

Carbon/Sic/Ssic/TC

Temperature

Elastomer Dependent

Rotary Ring

Sic/Ssic/TC

Pressure

≤2.8MPa

Secondary Seal

Viton/EPDM/Chemrazl Kalrez/Aflas, etc

Speed

≤35m/s

Spring and Metal Part

Stainless Steel/Hast C


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Product Specifications


D (mm)D1D2L1L3a
509518037.617.5113
5510018537.617.5118
6010519037.617.5123
6511019539.617.5128
7011520039.617.5133
7512020539.617.5138
8012521039.617.5143
8513021539.621.5148
9013522039.621.5153
9514022539.621.5158
10014523038.621.5163
10515023538.621.5168
11015524038.621.5173
11516024538.621.5178
12016525038.621.5183
12517025538.621.5188
13017526038.621.5193
13518026538.621.5198
14018527038.621.5203
14519027538.621.5208
15019528038.621.5213
15520028538.621.5218
16020529038.621.5223
16521029538.621.5228
17021530038.621.5233
17522030538.621.5238
18022531038.621.5243
18523031538.621.5248
19023532038.621.5253
19524032538.621.5258
20024533038.621.5263
20525033538.621.5268
21025534038.621.5273
21526034538.621.5278
22026535038.621.5283



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.


Metal Bellows Seals for High Temperature Pumps 606
Metal Bellows Seals for High Temperature Pumps 606
Metal Bellows Seals for High Temperature Pumps 606
Metal Bellows Seals for High Temperature Pumps 606



Product Research, Development and Testing


Our Product R&D and Testing focuses on optimizing 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.


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Industry Solutions


Metal Bellows Seals for High Temperature Pumps 606
Metal Bellows Seals for High Temperature Pumps 606
Metal Bellows Seals for High Temperature Pumps 606
Metal Bellows Seals for High Temperature Pumps 606




Case Study


Paint Factory Abrasion Solution: Pigments were destroying ceramic seals weekly in a paint manufacturing plant. We installed our SiC/SiC cartridge extended MTBF to 14 months.

Testimonials


We strictly use Miaoyu's Silicon Carbide seals for our slurry pumps. The wear life is incredible compared to carbon.

—Plant Manager, Fertilizer Plant



FAQs about Metal Bellows Seals for High Temperature Pumps


Q: Is Silicon Carbide (SiC) better than Tungsten Carbide (TC)?

A: It depends on the application. SiC is harder, lighter, and has better chemical resistance against acids, making it ideal for chemical and general industrial use. TC is tougher and better at handling impact shock, which makes it preferred for heavy-duty mining slurries where large rocks might impact the seal.

Please Contact Us!

Get Started With Your Next Project.
If you have any questions about our products and services, please feel free to contact us. Our team will get in touch with you within 24 hours!
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    Our company is specialized in the production of sealing materials, mechanical seals , cartridge seals.

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