Why is silicon carbide used for mechanical seal rings?

Silicon carbide combines hardness, wear resistance, dimensional stability and corrosion resistance for many sealing duties. Final suitability depends on grade, mating pair, fluid and operating conditions.

What information is required for a seal ring quotation?

Provide the pump or equipment type, shaft diameter, seal dimensions, operating pressure, operating temperature, medium, rotation speed, quantity and current failure issue.

Can custom seal ring dimensions be reviewed?

Yes. Geometry can be reviewed from a drawing, dimensional requirement or reference sample. Manufacturing feasibility must be confirmed before quotation.

How should chemical compatibility be confirmed?

Provide the exact fluid, concentration, temperature and cleaning media so the selected grade and complete seal assembly can be reviewed.

Silicon Carbide Mechanical Seal Ring

Mechanical Seal Ring

SKU: FWM/SC-MSR-001

Material: Silicon Carbide
Size: Custom sizes available
MOQ: 5 pieces per type
Applications: Pumps and mechanical sealing systems

Silicon carbide mechanical seal rings form the sealing interface in industrial pumps and rotating equipment. Stationary and rotating designs are reviewed against the mating material, fluid, pressure, temperature, speed and installation geometry. Send us your drawing, dimensions and operating conditions so the material grade, surface requirements and inspection needs can be confirmed before quotation.

Request a Quote View SiC Material Datasheet

Send us your drawing, dimensions, operating medium and required quantity for review.

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Product Description

FreeWill Technical Ceramics product families and semiconductor manufacturing applications

A useful quotation starts with the pump, seal assembly, shaft, fluid, pressure, temperature and speed—not a generic ring specification.

Silicon carbide mechanical seal rings and seal faces operate at the sealing interface of pumps and rotating equipment. The component geometry, mating pair and surface condition must be considered together with the fluid and duty cycle.

A quotation should therefore start from the seal assembly, drawing or reference component, shaft information and operating conditions. Final grade, dimensions, tolerances and inspection requirements are confirmed for the reviewed application.

Product Features

Excellent wear resistance
High hardness
Superior corrosion resistance
Low friction and reliable sealing performance
High thermal conductivity
Low thermal expansion
Good thermal shock resistance
High dimensional stability
Suitable for demanding operating conditions

Typical Applications

Centrifugal pumps
Chemical process pumps
Water treatment pumps
Slurry and abrasive-media pumps
Oil and gas processing equipment
Petrochemical processing equipment
Compressors and rotating equipment
Mechanical seal assemblies
Mixers and agitators
Other custom sealing systems

Technical Data

Property	Unit	SSiC	RBSiC
Color	—	Black / dark gray	Black / dark gray
Bulk density	g/cm³	≥3.10	≥3.03
Open porosity	%	<0.2	<0.2
Hardness	HV0.5	Approx. 2100	Approx. 2000
Elastic modulus	GPa	Approx. 400	Approx. 350
Flexural strength at 25°C	MPa	≥400	≥350
Compressive strength at 25°C	MPa	≥2200	≥2000
Thermal conductivity at 25°C	W/(m·K)	≥110	≥90
Coefficient of thermal expansion	10⁻⁶/K	Approx. 4.0	Approx. 4.0
Maximum service temperature	°C	Up to 1650	Up to 1300

Values shown are typical material data for reference and may vary with grade, geometry and test method. Final specifications should be confirmed against the drawing and operating conditions.

Available Forms

Drawing-based profiles are evaluated for material route and manufacturing feasibility before quotation.

Seal rings
Seal faces
Mating rings
Stationary rings
Rotary rings
Bushings and sleeves
Custom profiles according to drawings, subject to feasibility review

Packaging & Shipping

Packing and shipment arrangements are confirmed for the component geometry, order quantity and delivery requirement.

Item	Details
Packaging	Individually protected, cushioned and packed in export cartons or wooden cases according to size, quantity and transport requirements
Payment terms	To be confirmed in the quotation
Port of shipment	China, subject to final order arrangement
Shipping options	Express courier, air freight, sea freight or customer-appointed forwarder

Protective ceramic component packaging and available international shipping methods — Packaging and shipping illustration for reference. Final packing and carrier arrangements are confirmed for each order.

About FreeWill Material

FreeWill Material supplies technical ceramic components for demanding industrial applications. Our product range includes silicon carbide, silicon nitride, alumina, zirconia and other engineered ceramic materials.

We work with qualified manufacturing resources in China to support material selection, drawing-based customization, production coordination, inspection documentation and export delivery. Component feasibility, tolerances and material grades are reviewed according to the customer's drawings and operating conditions.

Our focus is to provide international buyers with clear technical communication, practical sourcing support and responsive quotation service for custom ceramic components.