Product
Product Details
Copper Ferrules – Copper Olives
Copper Ferrules – Copper Olives
Pricing: US$ 16.80 / Kilogram (FOB India | MOQ: 50 Kg | Custom grades on request)
Electrical Accessories India manufactures and exports precision copper ferrules and copper olives machined from copper bar or tube stock (C11000 ETP copper and C12200 DHP copper) on CNC turning centres and Swiss-type lathes. Copper olives—also known as copper compression rings, copper bite rings, or copper compression ferrules—are the sealing elements used in compression tube fittings (DIN 2353, BS EN ISO 8434-1, and equivalent standards) to create a leak-tight, pressure-resistant seal between a tube fitting body and the outer diameter of copper, steel, or stainless steel tubing. These components are supplied to OEM tube fitting manufacturers, instrumentation contractors, hydraulic system integrators, EPC contractors, refrigeration equipment manufacturers, and industrial distributors across North America, Europe, the Middle East, and Asia-Pacific.
Product Overview – Copper Ferrules and Copper Olives
Copper ferrules and copper olives—also referenced in procurement specifications as copper compression ferrules, copper compression rings, copper bite rings, copper cone rings, copper tube end fittings, copper sleeve ferrules, copper swage rings, copper tube support inserts, copper flare ferrules, and copper twin-ferrule components—are precision-turned ring-shaped components that form the critical sealing interface in compression tube fittings. When a compression fitting nut is tightened, the olive is radially compressed between the tube fitting body and the tube outer diameter, creating a metal-to-metal seal with leak-test capability to pressures of 400–700 bar depending on tube size and system design. Copper is selected for olives and ferrules where the tube material is also copper, to avoid galvanic corrosion, and where the soft malleability of copper ensures low assembly torque and excellent sealing without scratching the tube surface.
Single-Ferrule Copper Olives for DIN 2353 Fittings
Single-ferrule copper olives per DIN 2353 / BS EN ISO 8434-1 (formerly DIN EN 24 Taper), Parker A-LOK equivalent, Swagelok equivalent, and Legris/Parker Witel type fittings are produced in tube sizes from 4 mm OD to 42 mm OD with wall thickness tolerance ±0.05 mm and surface finish Ra 0.8–1.6 μm on the sealing cone. Standard cone angle is 24° front taper and 30° rear seat per DIN 2353 Type A. Custom cone angles (15°, 37°, 45°) are available against drawings for proprietary fitting types.
Twin-Ferrule Copper Olives (Front and Back Ferrules)
Twin-ferrule compression fitting systems use a front ferrule (primary olive) and a back ferrule (rear olive) in series to achieve higher pressure ratings and vibration resistance. Copper front ferrules with 15° internal cone, copper back ferrules with 20° cone, copper Swagelok-type front and back ferrules, copper Parker A-LOK front and back ferrules, copper Gyrolok-type ferrules, copper Hi-Seal ferrules, and copper Autoclave Engineers fitting ferrules are produced from C11000 ETP copper to provide the specific deformation characteristics (controlled bite depth, reproducible assembly torque) required by each fitting system.
Copper Tube End Ferrules and Support Sleeves
Copper tube end ferrules (sockets), copper tube support inserts, copper tube reinforcing inserts, copper liner sleeves, copper tube end caps, copper swage-type tube terminations, copper tube union ferrules, copper anchor ferrules, copper flare-type tube end rings, copper pilot ferrules, copper gauge tube ferrules, copper chromel/alumel sheath end ferrules, copper thermocouple tube end closures, copper instrument tube end seals, and copper sample tube connection ferrules are produced as turned components to customer drawings for instrumentation, process, and analytical system applications.
Copper Hydraulic and High-Pressure Ferrules
Copper compression olives for hydraulic tube fittings per DIN EN ISO 8434-1, JIC-37° flare ferrules, BSP-face-seal type copper sealing washers, copper HP compression olives for high-pressure systems (up to 700 bar for 6 mm tube), copper autoclave connector ferrules, copper hydraulic tube end compression rings, copper high-pressure instrument valve connector olives, copper sampling valve tube connector rings, copper pressure gauge tube connector ferrules, and copper capillary tube end compression olives are produced for hydraulic systems, high-pressure process piping, and analytical instrumentation.
Copper Refrigeration and HVAC Ferrules
Copper flare-type ferrules for SAE 45° flare refrigerant tube fittings, copper compression olives for refrigerant line connections, copper capillary tube end ferrules, copper condenser tube ferrules, copper evaporator tube sealing rings, copper service valve compression olives, copper manifold tube connection ferrules, copper Schrader valve stem sealing rings, copper access valve tube end fittings, copper flexible hose end ferrules, copper refrigeration flare tube end seals, and copper HVAC copper tube compression olives are produced to SAE J513, ASHRAE standards, and customer drawings for refrigeration, air conditioning, and heat pump system applications.
Copper Instrumentation and Analytical Ferrules
Copper GC (gas chromatograph) column ferrules, copper HPLC compression fittings ferrules, copper analytical flow cell tube end ferrules, copper mass spectrometer capillary tube ferrules, copper ion chromatography tube connection rings, copper process analyser sample tube ferrules, copper pH probe electrolyte tube end fittings, copper dissolved oxygen probe tube connections, copper flow injection analysis tube ferrules, and copper micro-bore tube compression seals are produced on Swiss-type turning centres achieving tolerances of ±0.003 mm on inside diameter for precise tube-to-ferrule fit and consistent column performance.
Custom and OEM Copper Ferrule Profiles
Non-standard copper ferrule profiles, copper double-cone ferrules, copper internally stepped ferrules, copper ferrules with knurled grip surfaces, copper spring-loaded compression ferrules, copper pre-assembly marked ferrules, copper colour-coded anodised ferrules, copper ferrules with integral O-ring grooves, copper ferrules for special tube materials (titanium, PVDF, PEEK), copper ferrules for thick-wall tube applications, and copper ferrules conforming to proprietary fitting dimensions (Gyrolok, Hi-Seal, Ermeto, Faster, Walform) are produced per customer-supplied drawings or sample measurements.
Key Features of Copper Ferrules and Copper Olives
- Material: C11000 ETP copper or C12200 DHP copper per customer requirement
- Tube size range: 4 mm OD to 42 mm OD (metric); 1/8″ to 1-1/2″ (imperial)
- Dimensional tolerance: ±0.05 mm OD and ID; ±0.03 mm cone angle width
- Surface finish: Ra 0.8–1.6 μm on sealing cone and tube bore
- Standards: DIN 2353, BS EN ISO 8434-1, SAE J513, SAE J514
- Pressure rating: up to 700 bar (6 mm tube, DIN 2353 type)
- 100% dimensional inspection; batch conductivity testing
- RoHS 2 and REACH compliant materials and surface treatments
Precision CNC Turning for Consistent Sealing Performance
The sealing performance of a compression olive depends critically on the dimensional accuracy of the sealing cone angle, outside diameter, and inside bore diameter. Variations in cone angle of more than ±0.5° will cause uneven biting of the ferrule on the tube surface, resulting in either insufficient sealing torque or tube deformation. Our CNC turned copper olives achieve cone angle accuracy of ±0.2°, OD tolerance ±0.05 mm, and ID tolerance ±0.05 mm, ensuring full interchangeability with the nominal fitting body dimensions. First-article inspection includes cone angle measurement by contour tracing (Mitutoyo Contracer) and surface finish measurement by profilometer (Ra 0.8–1.6 μm target).
Copper Material Properties for Compression Fitting Applications
Copper’s combination of controlled hardness (55–70 HRF for ETP C11000, annealed or quarter-hard temper), excellent ductility (elongation 30–45%), and smooth surface (Ra 0.8–1.6 μm as-turned) makes it the ideal material for compression olives where controlled deformation under assembly torque is required to create a leak-tight seal without fracture or spring-back. C12200 DHP copper provides identical mechanical properties to C11000 ETP while being weld-safe (no oxide film at weld zones) for applications where the tube fitting assembly may require subsequent brazing or soldering.
Material Traceability and Compliance
All copper bar and tube stock for ferrule manufacture is sourced from mills with EN 10204 Type 3.1 certificates confirming chemical composition, mechanical properties (tensile, hardness, elongation), and dimensional conformance. Material lots are traceable to production batches. Outgoing product is supplied with dimensional inspection reports per DIN 2353 or customer drawing requirements, and material compliance declarations (RoHS 2, REACH, halogen-free confirmation). Third-party inspection by SGS, TÜV, or Bureau Veritas is available for OEM qualification programs.
Surface Treatment Options
Standard copper ferrules are supplied in bare, bright copper (as-machined with chemical degreasing). Alternative surface treatments available include: tin plating (ASTM B545, 3–5 μm) for corrosion protection in humid or salt environments; nickel plating (ASTM B689, 3–5 μm) for general corrosion resistance; silver plating (2–5 μm) for enhanced lubricity and galling resistance on assembly; passivation/chromate treatment for tarnish resistance during storage and shipment; and organic lacquer for decorative or identification purposes. Pre-assembled ferrule sets (front + back ferrule in matched pairs, bagged) are available as value-added kitting services.
Volume Production and Packaging
Copper ferrules and olives are produced in high volumes (10,000 to 10,000,000+ pieces per year) on bar-fed CNC turning centres and Swiss-type lathes running at 200–600 strokes/minute for small sizes (4–12 mm tube). Standard packaging options include: bulk in polybag with part number label; small boxes (100/250/500 pieces per box); compartmented trays for precision parts; and customer-specified packaging including tube-and-reel for automated assembly insertion. Barcoded and laser-marked packaging is available. Export packing in corrugated cartons with ISPM-15 compliant wood dunnage for sea freight shipments.
Technical Specifications
| Parameter | Specification |
|---|---|
| Product | Copper Ferrules / Copper Olives / Copper Compression Rings |
| Process | CNC Turning from Copper Bar or Tube Stock |
| Material Grades | C11000 ETP Copper, C12200 DHP Copper |
| Tube Size Range (Metric) | 4 mm OD to 42 mm OD (DIN 2353) |
| Tube Size Range (Imperial) | 1/8″ OD to 1-1/2″ OD (SAE/Parker/Swagelok) |
| Dimensional Tolerance (OD/ID) | ±0.05 mm standard; ±0.02 mm precision |
| Cone Angle Tolerance | ±0.2° (24°, 30°, 37°, 45° per standard) |
| Surface Finish (Sealing Cone) | Ra 0.8–1.6 μm (as-turned) |
| Hardness (ETP Annealed) | 55–70 HRF (Rockwell) |
| Pressure Rating | Up to 700 bar (6 mm, DIN 2353 Type A) |
| Standards | DIN 2353, BS EN ISO 8434-1, SAE J513, SAE J514 |
| Surface Treatment | Bright / Tin-plated / Nickel-plated / Passivated |
| MOQ | 50 kg (standard); 500 pcs (prototype) |
| Lead Time | 2–4 weeks standard; 1 week express (stocked sizes) |
Copper Raw Material Grades and International Equivalents
| UNS (USA) | EN (Europe) | BS (UK) | DIN (Germany) | IS (India) | JIS (Japan) | Description |
|---|---|---|---|---|---|---|
| C11000 | CW004A | C101 | E-Cu58 (ETP) | ETP Copper | C1100 | Electrolytic Tough Pitch (ETP) |
| C12200 | CW024A | C106 | SF-Cu (DHP) | DHP Copper | C1220 | Phosphorus Deoxidized (DHP) |
Copper Ferrule Types and Variants
| Ferrule Type | Standard | Tube Size Range | Primary Application |
|---|---|---|---|
| Single Olive (DIN type) | DIN 2353 / BS EN ISO 8434-1 | 4–42 mm OD | Hydraulic and pneumatic compression fittings |
| Front Ferrule (Twin-Ferrule) | Parker A-LOK / Swagelok equivalent | 1/8″–1-1/2″ OD | High-pressure instrument tubing |
| Back Ferrule (Twin-Ferrule) | Parker A-LOK / Swagelok equivalent | 1/8″–1-1/2″ OD | High-pressure instrument tubing |
| SAE 37° Flare Ferrule | SAE J514 / JIC | 1/8″–1-1/2″ OD | Hydraulic systems (USA/Japan) |
| SAE 45° Flare Ferrule | SAE J513 / ACME | 3/16″–5/8″ OD | Refrigeration and HVAC |
| Capillary Tube Ferrule | Customer drawing | 0.5–6 mm OD | Instrumentation, analytical, GC columns |
| Tube Support Insert | Customer drawing | 4–25 mm OD | Tube reinforcement in soft tube compression |
| Custom Profile Ferrule | Customer drawing | Any size | OEM proprietary fitting systems |
Applications by Industry
| Industry | Copper Ferrule / Olive Application |
|---|---|
| Hydraulic Systems | Compression tube fitting olives, high-pressure line connections, hydraulic manifold tube seals |
| Instrumentation and Process Control | Instrument tube ferrules, gauge tube connectors, sampling tube seals, twin-ferrule fittings |
| Refrigeration and HVAC | SAE flare ferrules, capillary tube connectors, service valve olives, evaporator tube seals |
| Pneumatic Systems | Pneumatic compression olives, air line tube end ferrules, air cylinder port seals |
| Oil and Gas | High-pressure instrument tube olives, sample point tube ferrules, wellhead gauge tube seals |
| Power Generation | Boiler gauge tube ferrules, turbine lube oil instrument tube connections, condenser tube end ferrules |
| Analytical and Laboratory | GC column ferrules, HPLC tube end connections, mass spectrometer capillary fittings |
| Marine and Offshore | Salt-water resistant copper compression olives, marine hydraulic system ferrules |
Manufacturing Process
Copper ferrules and olives are produced through a precision CNC turning process. Step 1 – Raw Material: Copper round bar (C11000 or C12200) is sourced in annealed or quarter-hard temper, with mill test certificates confirming chemical composition, hardness (55–70 HRF), and conductivity. For large-diameter ferrules, copper tube or drawn tube is used to reduce material waste. Step 2 – CNC Turning: Parts are turned on bar-fed CNC turning centres or Swiss-type lathes. Tooling includes precision-ground carbide inserts for the sealing cone, face, and bore operations. The sealing cone (24°, 30°, 37°, 45° or custom) is the most critical feature and is produced with contour-controlled CNC interpolation to achieve the required angle accuracy (±0.2°). Step 3 – Deburring: Parts are deburred by vibratory finishing (ceramic or porcelain media) to remove turning burrs from the bore and cone edges without altering the cone angle. Step 4 – Cleaning: Ultrasonic cleaning with alkaline degreaser removes cutting oil and metal fines. Step 5 – Surface Treatment: Plating or passivation per customer specification. Step 6 – Inspection: 100% visual inspection; dimensional sampling per AQL 1.0 using optical comparator for cone angle verification; GO/NO-GO gauges for tube bore fit; surface finish measurement by profilometer. Step 7 – Packing: Parts are packed in polybag (VCI treated) per size, with part number label, EN 10204 3.1 material certificate, and REACH/RoHS declaration.
Quality Standards and Certifications
| Standard / Certification | Scope |
|---|---|
| ISO 9001:2015 | Quality Management System |
| DIN 2353 / BS EN ISO 8434-1 | Compression tube fittings – dimensional requirements for single-ferrule |
| SAE J513 / SAE J514 | Refrigerant and hydraulic flare fittings |
| ASTM B187 / BS EN 13601 | ETP copper bar chemical composition |
| ASTM B152 / BS EN 13599 | DHP copper sheet and strip (for tube-stock ferrules) |
| EN 10204 Type 3.1 | Material test certificate with independent inspection |
| RoHS 2 (2011/65/EU) | Restriction of hazardous substances |
| REACH (EC 1907/2006) | Chemical substance compliance |
Why Choose Electrical Accessories India for Copper Ferrules and Copper Olives?
Electrical Accessories India has dedicated copper ferrule turning lines equipped with bar-fed CNC turning centres, Swiss-type lathes, and precision optical comparators for cone angle verification. Our capabilities include: single-source supply for copper ferrules, compression olives, cable lugs, turned components, and fasteners; EN 10204 3.1 material certificates with every shipment; dimensional inspection with contour tracing for cone angle verification; export packaging per ISPM-15; and competitive pricing at US$ 16.80/kg FOB India. We supply OEM fitting manufacturers, instrumentation contractors, and distributors in India, USA, UK, Germany, UAE, Australia, Canada, Singapore, and South Africa.
Frequently Asked Questions (FAQ)
Q1. What is the difference between a copper ferrule and a copper olive?
In British English (UK, Australia, India), the ring-type sealing element in a compression tube fitting is commonly called an “olive.” In American English and ISO/DIN terminology, the same part is called a “ferrule” or “compression ring.” Both terms refer to the same component — a ring with a tapered or conical profile that is compressed between the fitting body and the tube OD when the nut is tightened, forming a leak-tight seal. Electrical Accessories India uses both terms interchangeably in product documentation.
Q2. Are your copper olives compatible with Parker, Swagelok, and Legris fitting bodies?
Copper ferrules and olives are produced to the specified dimensions of DIN 2353 / BS EN ISO 8434-1 or customer-supplied sample measurements. For brand-name fitting compatibility (Parker A-LOK, Swagelok, Legris, Gyrolok, Hi-Seal, etc.), we request a sample olive or detailed dimensional drawing as the basis for production, since proprietary fitting systems may have minor dimensional variations from the published standard. We cannot guarantee interchangeability without dimensional verification against a reference sample.
Q3. What temper (hardness) of copper is recommended for compression olives?
Annealed (O) or quarter-hard (H01) ETP copper (C11000) is standard for compression olives. Annealed copper (55–65 HRF) provides the lowest assembly torque and best tube sealing conformance. Quarter-hard (65–75 HRF) provides improved resistance to vibration loosening in dynamic applications (pumps, compressors, mobile equipment). Half-hard (H02) copper is not recommended for compression olives as it may not deform adequately to form a consistent seal during assembly.
Q4. Can you supply copper ferrules in sizes matching metric tube (DIN 2353) and imperial tube (Parker/Swagelok) in the same order?
Yes. Mixed metric (4–42 mm OD per DIN 2353) and imperial (1/8″–1-1/2″ OD per Parker/Swagelok dimensional equivalents) copper ferrule sets can be supplied in the same shipment. Each size and standard is packed separately with individual labels. Mixed orders are subject to the same 50 kg MOQ per size code.
Q5. What is the lead time for copper ferrules and olives?
Standard DIN 2353 copper olives in sizes 6–22 mm OD are carried in stock and can be dispatched in 1–2 weeks. Sizes outside this range and custom profile ferrules require 2–4 weeks production time from confirmed order. For urgent requirements, express production from stocked bar material can be organised in 7–10 working days for standard profiles.
Q6. Do you supply twin-ferrule sets (front + back ferrule) as matched pairs?
Yes. Twin-ferrule copper compression fitting sets (front ferrule + back ferrule + nut, bagged in matching sets per fitting standard) are available as kitted assemblies. This eliminates the mix-up of front and back ferrule dimensions during assembly. Custom kitting with OEM branding, batch labelling, or QR code traceability is available for high-volume OEM orders.
Q7. Can you supply copper ferrules with tin plating for food-grade applications?
Tin-plated copper ferrules (ASTM B545, matte tin, 3–5 μm) are available and are generally accepted for food-grade plumbing applications per NSF/ANSI 61 requirements. However, customers are responsible for verifying NSF 61 compliance for their specific application. We provide RoHS 2 and REACH compliance declarations. For fully certified food-grade applications, stainless steel ferrules may be the preferred option.
Q8. What is the minimum order quantity for copper olives?
The minimum order quantity is 50 kg per size code. For small quantities required for prototyping or type testing, we accept 500 pieces minimum for standard sizes (6–22 mm OD). For very small quantities (less than 500 pieces), our distributors may be able to supply from existing stock. Contact us for details of our nearest distribution partner.
Q9. Do you supply copper ferrules for gas applications (medical gas, natural gas)?
Yes. Copper DHP (C12200) ferrules for medical gas systems (per BS EN ISO 7396-1, HTM 02-01), natural gas compression fittings, and LPG tube end fittings are produced. DHP copper is preferred for gas applications because its deoxidised chemistry eliminates the risk of hydrogen embrittlement from hydrogen-containing gas streams, which can occur with ETP copper. Material certificates confirming DHP copper composition are provided with all gas-application ferrule orders.
Q10. Can copper olives be supplied pre-greased for field installation?
Yes. Copper olives can be supplied pre-coated with fitting assembly lubricant (copper-safe, anaerobic-free grease) for field compression fitting assembly. This ensures the correct lubricant is applied at installation to prevent galling and achieve the specified sealing torque values. Pre-greased olives are packed in resealable polybags to prevent lubricant contamination during storage. Custom lubricant specification (inert for oxygen service, PTFE-based, etc.) is available on request.
Equivalent Terms in Other Languages
| Language | Equivalent Terms (3–4 terms) |
|---|---|
| Spanish | Virolas de cobre, Olivas de cobre, Ferrulas de cobre para compresión |
| Russian | Медные феррулы, Медные маслины (компрессионные кольца), Медные компрессионные кольца |
| French | Manchons de cuivre, Olives de cuivre, Bagues de compression en cuivre |
| Portuguese | Virolas de cobre, Olivas de cobre, Anéis de compressão de cobre |
| Italian | Ghiere in rame, Olive in rame, Anelli di compressione in rame |
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Request a Quote – Copper Ferrules and Copper Olives
Electrical Accessories India | Manufacturer & Exporter of Copper Ferrules and Copper Olives
Email: info@elecaccs.com | Website: elecaccs.com
Price: US$ 16.80 / Kilogram (FOB India)
Lead Time: 2–4 weeks | MOQ: 50 Kg | Standard DIN sizes in stock
Provide tube size (OD), fitting standard (DIN 2353, SAE J514, or proprietary), material preference (C11000 ETP or C12200 DHP), and required quantity to receive a detailed technical and commercial quotation within 24 business hours. We serve OEM fitting manufacturers, instrumentation contractors, EPC contractors, and industrial distributors across India, USA, UK, Germany, UAE, Australia, Canada, Singapore, and South Africa.
