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Help CenterIndustrial Stainless Steel Ring, High Precision, Used for Mechanical Seals, Standard Compliant, Factory Direct
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Welcome to Dongguan HonHo Jewelry Co., Ltd. – your trusted manufacturer of high-precision industrial stainless steel rings, specifically designed for mechanical seals. With over 13 years of experience in metal fabrication and a modern factory spanning 3,000–5,000 square meters, we deliver rings that meet strict dimensional tolerances and international standards. Our factory-direct model ensures you receive competitive pricing without compromising on quality. Each ring is engineered to provide reliable sealing performance in demanding industrial environments, backed by our ISO9001-certified quality management system.
Our stainless steel rings are manufactured from premium-grade materials (304 or 316 stainless steel) and undergo rigorous precision machining to achieve surface finishes as fine as Ra 0.4 μm. They are ideal for use in pumps, compressors, mixers, and other rotating equipment where leak-free sealing is critical. The rings are fully compliant with ISO, DIN, and other international standards, and can be customized to your exact specifications – including outer diameter, inner diameter, thickness, and chamfer details.
Key Features & Technical Specifications
- Material Excellence: Made from austenitic stainless steel (304/316L) with excellent corrosion resistance, suitable for water, oil, and mild chemical media.
- High Precision: Dimensional tolerances up to ±0.01mm for critical sealing faces, ensuring consistent performance across every batch.
- Surface Finish: Options include mirror polish, fine-ground, or passivated finish to reduce friction and extend seal life.
- Standard Compliance: Manufactured according to ISO 2768-m (medium tolerance) or custom standards; we also support DIN 24960 for mechanical seal components.
- Customizable Sizes: Available in a wide range of diameters from 10mm to 500mm (or larger upon request), with thickness from 1mm to 20mm.
- Heat Treatment: Stress-relieved to prevent distortion during operation at elevated temperatures (up to 300°C for 316L).
- Factory Direct: Eliminate middlemen – order directly from the manufacturer for better pricing and shorter lead times.
- Packaging: Individually wrapped and packed in anti-rust paper, then in sturdy cartons or wooden crates for export.
| Parameter | Standard Range | Precision Tolerance |
|---|---|---|
| Outer Diameter (OD) | 20 – 500 mm | ±0.02 mm |
| Inner Diameter (ID) | 10 – 450 mm | ±0.015 mm |
| Thickness | 1 – 20 mm | ±0.01 mm |
| Surface Roughness (Ra) | 0.2 – 0.8 μm | As per grade |
| Chamfer (C) | 0.5 – 2 mm | ±0.1 mm |
Why choose our stainless steel rings for mechanical seals? The sealing face of a mechanical seal directly impacts leakage and service life. Our rings provide a perfectly flat and smooth surface that minimizes wear and maintains a reliable seal even under high-speed rotation and pressure fluctuations. The use of certified stainless steel ensures resistance to rust and chemical attack, making them suitable for applications in water treatment, petrochemical processing, food & beverage, and pharmaceutical industries.
We understand that every sealing system is unique. That is why we offer free design consultation – simply send your drawings or specifications, and our engineering team will provide a tailored solution. All rings are 100% inspected before shipment, with dimensional reports available upon request.
Trust & Credibility
Dongguan HonHo Jewelry Co., Ltd. has been a reliable manufacturer since 2010. Our factory employs 51–100 skilled workers and is equipped with CNC lathes, grinding machines, and precision measurement instruments. We export to North America, South America, Europe, Asia, Africa, and Oceania, with an annual export value of US$2.5–5 million. Our ISO9001 certification ensures that every ring you receive meets consistent quality standards. We pride ourselves on fast delivery (usually 15–20 working days) and 100% customer satisfaction.
Order today and experience the difference of factory-direct pricing and precision engineering. Contact us for a quote or technical support – we are ready to serve your mechanical seal needs.
Frequently Asked Questions (FAQ)
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Q: What stainless steel grades do you use for mechanical seal rings?
A: We commonly use stainless steel 304 and 316L. 304 is suitable for general applications, while 316L offers enhanced corrosion resistance for harsh environments. We can also source other grades like 17-4PH upon request. -
Q: Can you match my specific dimensions?
A: Yes, we specialize in custom sizes. Please provide your required OD, ID, thickness, and any chamfer or groove details. We will produce the rings exactly to your drawing. -
Q: How do you ensure the rings are flat and parallel for mechanical seals?
A: We use precision grinding and lapping processes. Each ring is inspected with a dial indicator and surface roughness tester to guarantee flatness within 0.005 mm and parallelism within 0.01 mm. -
Q: What is the typical lead time?
A: For standard sizes (up to 200 mm OD), lead time is 10–15 working days. Custom orders or large quantities may require 20–25 working days. We also offer expedited service for urgent needs. -
Q: Do you provide any quality certification with the shipment?
A: Yes, we can provide a Material Test Certificate (MTC) and a dimensional inspection report. Our ISO9001 system ensures full traceability. -
Q: What is the minimum order quantity (MOQ)?
A: For stainless steel rings, our MOQ is 100 pcs per size. However, for trial orders or prototyping, we can accept smaller quantities (e.g., 10–50 pcs) with a small setup fee. -
Q: How do you pack the rings to prevent damage during shipping?
A: Each ring is wrapped in anti-rust paper and separated by foam layers. They are then packed in strong export cartons or wooden crates, depending on size and quantity. -
Q: Can you finish the rings with surface treatment like passivation or coating?
A: Yes, we offer passivation to enhance corrosion resistance and a bright finish for appearance. Additional coatings like PTFE or DLC can be applied as an optional service.
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