Industrial Rings – Precision Retaining & Sealing Solutions
Category: Rings
Type: Internal, External, Snap, Spiral, E-clips, Circlips, Dowel Rings
Standards: DIN 471 / DIN 472 / DIN 5417 / DIN 2093 / ISO 13906
Materials: Spring Steel, Stainless Steel (AISI 304/316), Carbon Steel, Phosphor Bronze
Finishes: Black Oxide, Zinc Plated, Dacromet, Oil-Dipped, Passivated
Product Introduction
SM Fastners manufactures a wide range of precision-engineered industrial rings used for axial load retention, positioning, sealing, and mechanical locking. These components are crucial in applications that demand high-precision part holding, rotational security, and sealing performance.
From external retaining rings used in gear shafts to spiral rings in aerospace assemblies and snap rings in automotive applications, our rings are designed and tested for dimensional accuracy, fatigue strength, and corrosion resistance.
Whether standard DIN/ISO parts or custom non-standard designs, SM Fastners delivers international-quality rings with exacting tolerances, ready for global export and OEM integration.
Types of Rings We Offer
We supply an extensive variety of industrial rings in both metric and imperial sizes, including:
- Internal Retaining Rings (DIN 472) – Fit into bores or housings
- External Retaining Rings (DIN 471) – Fit over shafts
- Spiral Retaining Rings – For heavy-duty or radial load-bearing applications
- Snap Rings – Quick assembly parts used in automotive and tool components
- E-Clips – Semi-circular rings for shafts and rods
- Dowel / Locating Rings – Precision rings for assembly alignment
- Wave Springs / Disc Springs – Rings used for preloading or cushioning
- Custom Machined Rings – CNC or wire-formed per drawing/spec
Available in standard DIN/ISO sizes and non-standard diameters, grooves, and tolerances.
Material & Coating Options
Our rings are made using resilient, high-fatigue materials and can be customized for exposure to heat, corrosion, and extreme pressures.
Materials:
- Spring Steel (EN 42J, 1070)
- Stainless Steel (SS 304 / SS 316 / 17-7PH)
- Carbon Steel
- Beryllium Copper
- Phosphor Bronze
- Titanium (Aerospace orders)
Finishes & Treatments:
- Black Oxide (Corrosion Protection)
- Zinc Plating (Clear or Yellow)
- Dacromet / Geomet Coating
- Oiled or Dry Finish
- Passivation (for stainless steel)
- Shot Peened (for fatigue resistance)
Applications
Rings are used in assemblies requiring rotational positioning, locking mechanisms, and axial retention under dynamic loads. Common industries include:
- Automotive & Transmission Systems – Used in gearboxes, wheel hubs, suspension units, and differential locks.
- Aerospace – Spiral and custom rings for engine casings, fuel systems, and structural elements.
- Oil & Gas – High-pressure rings used for sealing and retention in valves, pipelines, and tools.
- Electric Motors & Generators – Retaining rings hold bearing races and rotor assemblies in place.
- Hydraulic & Pneumatic Systems – Retaining and sealing rings for pistons, cylinders, and couplings.
- Industrial Tools & Machines – Snap rings used in drills, grinders, pulleys, and robotics.
Technical Overview
Why Choose SM Fastners?
🧪 Precision-machined rings with micron-level tolerances
🔄 Wide size range available for immediate dispatch
🧰 In-house heat treatment, forming, and finishing facilities
📦 Clean, export-safe packaging with full traceability
⚙️ Custom-designed and special-profile rings supported
🌐 Full technical documentation and international shipping
Packaging & Delivery
We ensure rings are packed for protection and traceability:
- HDPE bags (small orders)
- VCI anti-corrosion pouches for export
- Bubble wrap with box-in-box protection
- Laser marking on custom aerospace/medical parts
- Fumigated wooden crates for high-volume export
Industries We Serve
🚘 Automotive OEMs & Tier Suppliers
🛩️ Aerospace & Avionics
🛢️ Oil & Gas Refinery Equipment
⚙️ General Industrial Equipment
🔩 Power Tools & Maintenance Kits
💡 Electrical Motors & Energy
🔬 Laboratory & Precision Devices
Documentation Supplied
- Dimensional Inspection Report
- Raw Material Certificate
- Surface Treatment Certificate
- Compliance with DIN / ISO Standards
- Packing List + HS Code Declaration
- Export Invoice & Country of Origin Certificate
Request a Quotation
We supply bulk rings, OEM parts, and custom solutions to 20+ countries worldwide.
📧 Email: susheel@smfastners.com
📞 Phone: +91 8968469570
💬 WhatsApp Chat: Click to Chat
Send us your drawings or specs, and get a fast, reliable quote with lead times, packaging, and logistics included.