Stainless Steel End Cover Silicone Sol Precision Casting For Fluid Equipment End Covers
This Stainless Steel End Cover closes and seals the end of fluid equipment housings, pump and valve bodies, and process fluid containment assemblies. Weighing 1.3 kg with overall dimensions of 85 × 70 mm, it is produced through our in-house Silicone Sol Precision Casting process with solution treatment, then CNC machined on the center bore and sealing face.
Matech's one-stop approach, covering wax pattern making, silicone sol shell casting, solution heat treatment, CNC machining (center bore, sealing face, side ports), shot blasting and polishing, dimensional and surface inspection, and engineered packing, ensures this end cover offers excellent bore accuracy, tight sealing face flatness, and a polished corrosion-resistant surface — performing reliably in demanding fluid equipment applications.
design customization
Please fill out the form below to request a quote or to request more information about us. Please be sure to upload customized requirement documents or pictures, and we will get back to you as soon as possible with a response. we're ready to start working on your new project, contact us now to get started.
Please fill out the form below to request a quote or to request more information about us. please be as detailed as possible in your message, and we will get back to you as soon as possible with a response. we're ready to start working on your new project, contact us now to get started.
Custom 316 Stainless Steel End Cover | Silicone Sol Investment Casting | Polished Dome Cap for Fluid Equipment — Matech
| Specification | Details for This Case | Matech’s Capability / Notes |
| Model / Grade | SUS316 (compliant with JIS H 5302) | We can manufacture products according to customer requirements using 304/316 stainless steel, carbon steel, alloy steel, high-temperature alloy steel, and other materials, and can provide complete material certificates. |
| Casting Equipment | Medium- and high-frequency induction furnaces, silica sol shell-forming production lines, calcining furnaces, pouring stations, etc. | We can produce castings ranging from 0.5 kg to 5,000 kg, with maximum dimensions of 4,000 x 4,000 x 4,000 mm. |
| Unit Weight | 1.3 kg | Available processing weight range: 0.5 kg ~ 5000kg cast components |
| Overall Dimensions | 85x70 mm | Maximum machining size approximately 4000x4000x4000 mm; custom dimensions based on drawings |
| Casting Tolerance | CT5-CT6 Grade | Enables the production of complex shapes and precise features, eliminates the need for extensive post-processing, and saves both time and money |
| Machining Tolerance | ±0.02 mm | Backed by 3-, 4-, and 5-axis CNC machining centers, we can achieve tighter tolerance specifications, with a maximum machining accuracy of ±0.005 mm. |
| Surface Roughness | As-cast Ra 6.3 μm / Machined Ra 0.8 μm | Machined surfaces can achieve a minimum surface roughness of Ra 0.8–Ra 1.6 μm (milling/turning) and Ra 0.4–0.8 μm (grinding). |
| Min. Wall Thickness | 3.5 mm | Specialized thin-wall casting technology enables minimum wall thickness down to 0.5 mm depending on part structure |
| Heat Treatment | Solution Treatment | Available processes include normalizing, tempering, quenching, annealing, and high-frequency hardening with full-process temperature control |
| Surface Treatment | Shot blasting, surface sandblasting, machining | Products can be passivated, pickled, electropolished, electroplated, shot-blasted, sandblasted, or spray-coated as required. |
| Application Industry | Fluid Equipment End Covers | Widely used in robotics, automotive, medical devices, general machinery, agricultural machinery, and new energy industries |
| Minimum Order Quantity | 200 pcs | Flexible MOQ, supporting prototype development and small-batch trial production |
| Sample Lead Time | 45-60 Working Days (Including New Tooling Development) | Delivery schedule depends on drawing review results; expedited production supported |
| Production Lead Time | 40-60 Working Days | Lead time determined by order quantity and product complexity; negotiable for long-term cooperation |
| Drawing Formats | STEP, IGES, X_T, DWG, PDF | Supports all mainstream 2D/3D engineering drawing formats |
| Customizable | Manufactured according to drawings or samples | Full customization available for material, structure, tolerance, and surface treatment |
| Certification | ROHS,ISO 9001:2015 | Material certificates EN 10204 3.1, dimensional inspection reports, and PPAP Level 3 documents available upon request |
| Packing | Customized PE Foam + Wooden Crate Packaging | Customized anti-corrosion and protective packaging solutions available for precision and critical components |
Customization Options
Every casting project starts with your unique design and requirements. Whether it's iron, steel, or aluminum, we tailor every aspect of the manufacturing process to your exact specifications. Below are the key dimensions you can customize with Matech — your drawing is our only standard.
Material Selection
From aluminum alloy to grey/ductile iron to carbon steel/stainless steel — we pour the alloy your design demands. Custom compositions are welcome. Full material certification included.
Casting Process
Our engineers tailor the most suitable manufacturing process to your specific needs based on your part's geometry, volume, and performance requirements, ensuring the optimal balance between quality and cost.
Dimensional Accuracy & Machining
We machine to your exact tolerances. In-house 3/4/5-axis CNC with custom fixtures. Casting tolerance CT4-CT11, machining tolerance up to ±0.005mm.
Heat Treatment
MATECH provides a full range of heat treatment services, including:Annealing, Normalizing, Quenching, Tempering, Carburizing, Nitriding, Solution Treatment.
Surface Treatment & Coating
Matech support: Sandblasting / Shot Blasting,Chemical Degreasing, Pickling/Passivation, Mechanical Grinding / Polishing, Zinc Plating, Hard Chrome Plating, Electroless Nickel Plating, Anodizing, Dacromet, Powder Coating, Black Oxide, Stainless Steel Passivation.
Testing, Documentation & Packaging
From material certificates to complete customs clearance documents, and from custom pallets to packaging optimized for your product's specific characteristics. Your parts arrive fully documented, well-protected, and ready for immediate use.
Our Advantages
Technical Advantages
The spherical profile of this end cover is formed directly in the silicone sol mold, so the polished exterior and internal fluid cavity need little or no machining. Material waste is reduced, machining time is shorter, and the dome surface stays uniform — an advantage sand casting cannot match for this geometry.
For a fluid equipment end cover, the internal cavity surface is as important as the sealing face. Our review examines wall thickness in the dome section, core stability for the internal cavity, and gate placement to keep porosity away from the fluid-contact surface and sealing zone.
Because this cover is a visible fluid equipment component, cosmetic appearance is specified, not left to chance. Polishing and shot blasting are performed to a defined finish standard, with surface roughness verified on both exterior and fluid-contact surfaces before packing.
Service Advantages-总部接待区 1 拷贝
Material Advantages
The molybdenum content in SUS 316 is verified by spectrometer on every incoming batch. This is the element that provides resistance to chlorides, process chemicals, and crevice corrosion in the sealing zone — the failure mode that matters most for a fluid equipment end cover.
The cast dome is solution treated to relieve solidification stress and homogenize the austenitic structure. This stabilizes the geometry before the center bore and sealing face are machined, reducing the risk of distortion that would compromise sealing.
Where 316 is not sufficient — strong acids, high-chloride process streams, or elevated-temperature service — we can cast 2205 duplex or other high-alloy grades, adjusting the casting and heat treatment route to suit the fluid chemistry.
Service Advantages
A fluid equipment end cover combines functional sealing requirements with visible surface appearance. Your project manager coordinates the foundry, machine shop, and polishing team so both sets of requirements are met in one production flow.
Before batch production, we provide a first-article report covering center bore accuracy, sealing face flatness, side port position, internal cavity surface roughness, and material certification — the full set of data for a fluid-contact component.
New end cover programs can start with pilot quantities to validate sealing performance and fit before volume production. Batch traceability and 24-hour quality response remain active through the part's production life.
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Contact Us
Contact us now! Our technical team and mechanical engineers are ready to provide one-stop support for your project from requirement review, quotation to delivery.
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