Silicon Carbide Seal
Silicon carbide (SSiC / RBSiC / ReSiC) sheaths engineered for extreme temperatures, corrosive atmospheres, and rapid thermal cycling. Gas-tight options for precise, long-life measurement.
- Samples in 3–7 days
- Small batch in ~7 days
- 1 pc MOQ
Silicon Carbide Mechanical Seal Overview
Silicon carbide seal rings are high-performance components used in mechanical seals, made from advanced SiC ceramic. Known for their extreme hardness, excellent wear resistance, high thermal stability, and strong chemical inertness, they are ideal for harsh industrial environments.
Zirsec offers different types including reaction bonded silicon carbide (RB SiC), pressureless sintered SiC, and hot-pressed SiC. Among them, RB SiC rings are widely preferred for their balance of PV value, cost-efficiency, and durability.
FEATURES & BENEFITS
- Excellent wear resistance
- High hardness
- Superior chemical resistance
- High temperature tolerance
- Low friction coefficient
- High thermal conductivity
- Energy-efficient – Low pressure & power use
APPLICATIONS AREAS
- Mechanical seals for chemical pumps
- Slurry pumps
- Petrochemical systems
- Food and pharmaceutical equipment
- Semiconductor equipment
- High-purity fluid systems
Custom Silicon Carbide Seal Solution
Zirsec offers customized silicon carbide seal rings designed for high-performance sealing in harsh environments. Our SiC seals deliver excellent wear, corrosion, and temperature resistance, making them ideal for chemical pumps, slurry systems, and precision equipment.
Customization Requirements
Specify inner and outer diameters
Accurate sizing ensures proper fit and sealing performance.
Choose material type (RBSiC, SSIC, etc.)
Different SiC materials offer varying levels of corrosion and wear resistance.
Define surface finish and flatness
High precision surfaces improve sealing efficiency and reduce leakage.
Provide application conditions
Information like medium, temperature, and pressure helps optimize material and design.
FAQ
1) SSiC vs RBSiC — which should I choose?
Pick SSiC for highest strength and broader chemistry; RBSiC for excellent all-round performance and cost balance, but avoid extreme pH.
2) What flatness and finish do you provide?
Standard lapping to 1–2 helium light bands with mirror finish; common ranges are Ra ≤0.05–0.2 μm depending on duty.
3) What does “1 light band” mean?
Using an optical flat and monochromatic light, one helium light band corresponds to ~0.29 μm of out-of-flatness.
4) Do you follow API 682?
Yes. API 682 emphasizes choosing the grade of SiC based on chemical compatibility and application conditions.
5) What pH and media are suitable?
Reaction-bonded SiC is typically kept within about pH 4–11. Sintered SiC or SiC-on-SiC pairs are commonly used for more aggressive chemistries, with selection confirmed by the exact fluid.
6) Maximum working temperature?
Typical guidance: SSiC ≈1600 °C in air; RBSiC ≈1380 °C. Actual limits depend on PV, atmosphere and cooling.
7) Can you supply diamond-coated faces?
Yes. Diamond-coated SiC faces are used for severe services to reduce friction and heat generation.
8) What inspection do you provide?
Optical flat inspection for light bands, surface roughness verification and dimensional checks; lapping is the preferred finishing method for seal faces.
9) How do SiC faces help reliability?
They improve run life and reduce maintenance in hot/corrosive or solids-laden media compared with softer faces.
10) Lead time and MOQ?
Customization
From design to reverse engineering, we provide free technical consulting to help upgrade your equipment. We specialize in high-precision complex parts with ±0.01mm tolerances and special coatings like acid and oxidation resistance, tailored for demanding industrial applications.
FAQ
What types of silicon carbide products does Zirsec supply?
Zirsec offers a wide range of SiC components including tubes, beams, plates, crucibles, rollers, sealing rings, and custom mechanical parts for industrial, chemical, and semiconductor applications.
Can Zirsec provide customized sizes or shapes?
Yes. We support OEM and customized production based on your drawings, specifications, or working conditions.
Do you provide samples for testing?
Yes, sample orders are available for standard items. For custom-made components, small batch samples can be produced after design confirmation.
How can I request a quotation?
Simply fill out the contact form on this page with product type, quantity, and specifications. Our sales engineer will send you a detailed quotation within 24 hours.
Does Zirsec offer technical consultation or design assistance?
Absolutely. Our engineers provide material selection guidance, structural optimization, and technical support for your specific applications.
How does Zirsec ensure product quality?
All products undergo strict inspection procedures, including dimensional accuracy, density, strength, and corrosion resistance tests before delivery.
Tell us your requirements
Our technical engineer will reply with a custom solution and quotation within one working day.
