Description
Stainless Steel Hose Crimp Ferrules & Crimp Collars – SS 304 / SS 316 | Stainless Steel Fittings India
Stainless Steel Hose Crimp Ferrules and Stainless Steel Crimp Collars are precision-machined cylindrical fittings used to permanently terminate and secure hose assemblies in high-pressure hydraulic, pneumatic, chemical, sanitary, and industrial fluid systems. Manufactured from SS 304, SS 316, and SS 316L bar stock using CNC turning and cold-forging processes, these ferrules provide a leak-proof, mechanically robust crimp joint when applied with a hydraulic crimping machine. Stainless Steel Fittings India supplies SS crimp ferrules conforming to SAE J516, DIN EN 853, and ISO 12151 standards for global OEM, EPC contractor, and distributor requirements.
Price: SS 316 Stainless Steel Crimp Ferrules – Starting from US$ 11.50 per kilogram (ex-works Jamnagar, India). Bulk discounts available for OEM and distributor orders.
Product Overview – Stainless Steel Hose Crimp Ferrules
What Is a Hose Crimp Ferrule?
A hose crimp ferrule (also called a hose crimp collar, hose end ferrule, crimp shell, or crimping sleeve) is a tubular metal sleeve swaged or crimped over the outer braid or cover of a hydraulic or industrial hose to lock the hose end fitting in place. In stainless steel hose assemblies using wire-braided hoses, PTFE-lined hoses, corrugated metal hoses, sanitary silicone hoses, and LPG/CNG hoses, the ferrule serves as the outer compression member of the end-termination system. The ferrule works in combination with a hose nipple or insert fitting, compressing the hose wall between the nipple serrations and the inner bore of the ferrule under controlled crimp-die pressure. Common synonyms include crimp collar, hose ferrule, crimp sleeve, hose end collar, swage ferrule, and crimp shell.
Stainless Steel Hose Crimp Ferrules for PTFE Hoses
PTFE-lined hose assemblies used in chemical dosing, pharmaceutical transfer, food and beverage processing, semiconductor fabrication, and aggressive-fluid piping require non-contaminating, corrosion-resistant end fittings. SS 316L crimp ferrules are the standard choice for PTFE hose terminations because of their low-carbon content, high corrosion resistance to chlorides, acids, and caustic media, and full FDA/3-A compliance when polished to Ra ≤ 0.8 µm. These ferrules are dimensioned to suit the outer diameter of the PTFE hose liner and the stainless nipple, and are crimped using precision crimp dies to achieve full hose engagement without deforming the inner PTFE liner. Related terms: PTFE hose ferrule, Teflon hose crimp collar, SS 316L hose end fitting, pharmaceutical hose crimp sleeve.
Stainless Steel Crimp Ferrules for Sanitary and Hygienic Hoses
Dairy, beverage, food-grade, and biopharma industries use sanitary hose assemblies with tri-clamp, DIN 11851, RJT, or SMS end connections. SS 316L crimp ferrules for sanitary hoses are electropolished or bead-blasted to achieve a surface finish suitable for CIP (clean-in-place) and SIP (steam-in-place) cleaning cycles. The internal bore tolerances are held to ±0.03 mm to ensure uniform compression on silicone hose, TPU food hose, or EPDM sanitary hose. Related terms: hygienic hose ferrule, food-grade crimp collar, sanitary hose end fitting, tri-clamp hose ferrule, dairy hose crimp sleeve, 3A-certified hose fitting.
Stainless Steel Crimp Ferrules for Wire-Braided Hydraulic Hoses
High-pressure wire-braided hydraulic hoses (SAE 100R1, R2, R5, and R9) use stainless steel crimp ferrules for termination in marine, offshore, chemical plant, and corrosive-environment hydraulic systems where carbon steel skiving ferrules are unacceptable. SS 316 crimp ferrules for hydraulic hoses are dimensioned per SAE J516 and EN 856 and suit hose sizes from 1/4″ to 2″ ID. The crimped joint withstands operating pressures up to 6,000 psi (420 bar) depending on hose type. Related terms: hydraulic hose crimp collar, SAE hose ferrule, wire-braid hose sleeve, high-pressure hose end fitting, stainless hydraulic crimp shell.
Stainless Steel Crimp Ferrules for Corrugated Metal Hoses
Corrugated stainless steel hoses (also called flex hoses or annular corrugated metal hoses) used in gas supply, steam jacketing, vacuum lines, and cryogenic service are terminated using SS 304 or SS 316 crimp ferrules swaged directly over the hose braid. The ferrule is welded or mechanically crimped to provide a gas-tight, vibration-resistant end connection. Related terms: corrugated hose ferrule, metal flex hose fitting, SS annular hose collar, braided SS hose end fitting, gas hose crimp sleeve.
Crimp Ferrules for LPG, CNG, and Fuel Hose Assemblies
LPG transfer hoses, CNG fuel hoses, oil-return hoses, and diesel fuel hoses in industrial equipment and marine engines use stainless steel crimp ferrules to meet pressure retention requirements and resistance to fuel permeation. SS 304 crimp ferrules in this application comply with EN 1762, EN 559, and relevant SAE standards. Related terms: LPG hose ferrule, fuel hose crimp collar, CNG hose end fitting, petroleum transfer hose sleeve, SS fuel hose crimp shell.
Stainless Steel Crimp Ferrules for Instrumentation and Pneumatic Tubing
Process instrument tubing, pneumatic control lines, and impulse lines use small-bore SS crimp ferrules (1/4″ to 1″ sizes) to terminate braided nylon, polyurethane, and PTFE instrument hoses. These micro-bore ferrules are machined from SS 316 bar to tight tolerances and are used in conjunction with push-to-connect or compression body fittings. Related terms: instrument hose ferrule, PU hose crimp collar, pneumatic hose end fitting, small-bore crimp sleeve, instrument tubing ferrule.
Key Features of Stainless Steel Hose Crimp Ferrules
- Machined from solid SS 304, SS 316, or SS 316L bar stock to tight dimensional tolerances
- Internal bore sized for specific hose OD – no hose skiving required in most designs
- External surface with knurling, grooves, or serrations for positive die engagement during crimping
- Suitable for hydraulic, pneumatic, chemical, sanitary, PTFE, and metal corrugated hose types
- Compatible with standard hydraulic crimping machines and interchangeable die sets
- Electropolish, bead-blast, or passivation surface treatment available
- Leak-free performance at working pressures from vacuum to 420 bar (6,000 psi)
- Temperature range: –196°C to +800°C (cryogenic to high-temperature, grade-dependent)
- Non-sparking, non-magnetic (SS 316L) variants available for ATEX / hazardous area use
- Custom OD, ID, length, and wall thickness per customer drawing or sample
Corrosion Resistance
SS 316 and 316L crimp ferrules contain molybdenum (2–3%) which provides superior resistance to chloride-induced pitting corrosion, crevice corrosion in seawater, and attack by dilute sulfuric acid, phosphoric acid, and halide environments. SS 304 ferrules are suited for mildly corrosive environments and potable water service. Both grades are passivated per ASTM A967 / AMS 2700 to enhance the passive chromium oxide layer. SS 316L ferrules are preferred for chlorine, bleach, brine, and marine duty.
Temperature Performance
Stainless steel crimp ferrules maintain dimensional stability and mechanical integrity from cryogenic temperatures (–196°C for LNG/cryogenic hose terminations using SS 316L) through elevated temperatures up to +400°C for steam-jacketed hose assemblies using SS 321 or SS 347 variants. The austenitic stainless steel microstructure provides excellent impact toughness at sub-zero temperatures without becoming brittle – unlike carbon steel ferrules which exhibit DBTT (ductile-to-brittle transition temperature) below –30°C.
Pressure Retention
When crimped using calibrated crimping equipment with manufacturer-specified die settings, SS crimp ferrules achieve a joint pull-out force exceeding 4× the rated working pressure of the hose assembly. Burst pressure of properly crimped SS ferrule joints is typically 4:1 to 5:1 safety factor relative to working pressure per SAE J517. Ferrules for high-pressure hydraulic hoses (SAE 100R9, R12, R13, spiral hoses) are dimensioned with heavier wall sections and external reinforcement grooves.
Sanitary and Hygienic Compliance
SS 316L ferrules for food, dairy, beverage, and pharmaceutical hose assemblies are supplied with electropolished internal bores and external surfaces to Ra ≤ 0.4 µm (mirror-polished) or Ra ≤ 0.8 µm (standard sanitary finish). They comply with 3-A Sanitary Standard 74, FDA 21 CFR 177.2600, EC 1935/2004, and EHEDG guidelines. Internal radius blending eliminates dead legs and crevices that harbor microbial growth.
Chemical Compatibility
SS 304 and SS 316 crimp ferrules are chemically compatible with a wide range of process fluids including: deionized water, steam, hot water, acids (nitric, phosphoric, acetic, citric), alkalis (NaOH up to 20%), solvents (alcohols, acetone, toluene), chlorinated compounds (at low concentrations), hydrocarbons (petroleum, diesel, LPG, CNG), and industrial gases (air, nitrogen, CO₂, argon). They are not suitable for hydrochloric acid (HCl), hydrofluoric acid (HF), or concentrated sulfuric acid – SS 904L or Hastelloy alternatives should be specified for such media.
Technical Specifications
| Parameter | Specification |
|---|---|
| Material Grades | SS 304, SS 304L, SS 316, SS 316L, SS 321, SS 347 |
| Size Range (Hose ID) | 1/4″ to 4″ (6 mm to 102 mm) |
| Wall Thickness | 1.5 mm to 6 mm (varies by pressure rating) |
| Standard Length | 20 mm to 150 mm (custom available) |
| Working Pressure | Vacuum to 420 bar (6,000 psi) |
| Temperature Range | –196°C to +400°C (grade-dependent) |
| Surface Finish | Mill finish, passivated, bead-blasted, electropolished (Ra ≤ 0.4 µm) |
| Tolerances | ID: ±0.05 mm; OD: ±0.05 mm; Length: ±0.5 mm |
| Manufacturing Standard | SAE J516, EN 853, ISO 12151, DIN EN 856 |
| Applicable Hose Types | PTFE lined, wire-braided hydraulic, corrugated metal, sanitary silicone, LPG/CNG, PU instrument |
Raw Material Grades and International Equivalents
| Grade | UNS No. | EN / DIN No. | BS No. | JIS No. | Key Properties |
|---|---|---|---|---|---|
| SS 304 | S30400 | 1.4301 | 304 S31 | SUS 304 | General purpose, 18Cr-8Ni |
| SS 304L | S30403 | 1.4307 | 304 S11 | SUS 304L | Low carbon, weld-sensitive |
| SS 316 | S31600 | 1.4401 | 316 S31 | SUS 316 | Mo addition, chloride resistant |
| SS 316L | S31603 | 1.4404 | 316 S11 | SUS 316L | Low carbon, sanitary/pharma |
| SS 321 | S32100 | 1.4541 | 321 S31 | SUS 321 | Ti-stabilized, high-temperature |
| SS 347 | S34700 | 1.4550 | 347 S31 | SUS 347 | Nb-stabilized, steam/heat |
Product Types and Variants
| Variant Type | Description | Typical Application |
|---|---|---|
| Standard Crimp Ferrule | Plain cylindrical sleeve with chamfered ends | General hydraulic and industrial hoses |
| Stepped / Shoulder Ferrule | Internal step to limit hose insertion depth | Precise assembly control, OEM production |
| Serrated Bore Ferrule | Internal serrations for non-skive hose assembly | High-pressure hydraulic hose |
| PTFE Hose Ferrule | Smooth bore, polished ID for PTFE liner protection | Chemical, pharmaceutical, food hose |
| Sanitary Ferrule (EP) | Electropolished, crevice-free design | Food, dairy, biopharma, hygienic hose |
| Corrugated Metal Hose Ferrule | Heavy-wall, weldable design | Gas, steam, vacuum, flex metal hose |
| Swage Ferrule (One-piece) | Crimped or swaged directly on hose braid | Hydraulic, LPG, fuel hose assemblies |
| Custom / Drawing-Based | Per customer OD, ID, length specification | OEM hose assembly manufacturers |
Applications by Industry
| Industry | Application | Hose Type | Grade |
|---|---|---|---|
| Oil & Gas / Petrochemical | Hydraulic control hose, chemical injection lines, offshore deck hoses | Wire-braided, PTFE | SS 316 / 316L |
| Food & Beverage | CIP/SIP cleaning hoses, product transfer, juice/dairy lines | Sanitary silicone, PTFE | SS 316L EP |
| Pharmaceutical / Biotech | API transfer, sterile sampling lines, WFI transfer | PTFE, silicone | SS 316L EP |
| Chemical Processing | Acid transfer, solvent lines, chlorine service, alkali dosing | PTFE-lined, wire-braid | SS 316 / 316L |
| Marine / Offshore | Seawater cooling hoses, deck wash hoses, fuel transfer | Wire-braided, rubber | SS 316 |
| Power Generation | Instrument impulse hoses, steam vent hoses, hydraulic actuation | Wire-braided, metal corrugated | SS 321 / 347 |
| Semiconductor / Electronics | Ultra-pure DI water lines, chemical delivery hoses | PTFE-lined | SS 316L EP |
| LPG / CNG / Fuel Gas | Gas transfer hoses, fuel injection lines, cylinder pigtails | Rubber-lined, braided | SS 304 / 316 |
| Industrial Machinery / OEM | Hydraulic systems, pneumatic tools, coolant hoses | Wire-braided hydraulic | SS 304 / 316 |
Manufacturing Process
Stainless Steel Hose Crimp Ferrules at Stainless Steel Fittings India are manufactured using the following controlled process:
- Raw Material Procurement: Certified SS 304/316/316L bright bar stock sourced with full mill test certificates (MTC) per EN 10204 3.1B.
- CNC Turning: Bar stock is turned on CNC lathes to achieve precise OD, ID, and length dimensions. Multi-pass turning ensures concentricity within 0.02 mm TIR.
- Internal Bore Finishing: For PTFE and sanitary ferrules, the bore is honed or polished to specified Ra values. Stepped or serrated bores are produced by CNC profiling.
- Deburring and Edge Breaking: All edges are deburred using rotary deburring or hand-finishing tools to prevent hose liner damage during assembly.
- Passivation: Ferrules are passivated in nitric acid or citric acid solution per ASTM A967 / AMS 2700 to restore the passive layer after machining.
- Electropolishing (Optional): Sanitary and pharmaceutical-grade ferrules are electropolished in a controlled phosphoric/sulfuric acid bath to Ra ≤ 0.4 µm.
- Dimensional Inspection: 100% dimensional inspection using CMM, air gauges, and plug/ring gauges. Critical dimensions verified per AQL sampling plan.
- Pressure / Assembly Testing: Sample ferrules assembled with hose and nipple are tested on hydraulic burst and pull-out test rigs per SAE J517.
- Marking and Packaging: Ferrules are marked with grade (e.g., SS 316), size, and batch number. Packed in polythene bags with desiccant for corrosion protection during transit.
Quality Standards and Certifications
| Standard / Certification | Applicability |
|---|---|
| ISO 9001:2015 | Quality Management System – manufacturing and inspection |
| SAE J516 / J517 | Hydraulic hose fittings and hose performance standards |
| EN 853 / DIN EN 856 | Wire-braided and spiral hydraulic hose standards |
| ISO 12151 | Connections for fluid power and general use – hose fittings |
| ASTM A276 / A479 | SS bar stock material specification |
| EN 10204 3.1 MTC | Material Test Certificate with chemical and mechanical data |
| ASTM A967 / AMS 2700 | Passivation treatment standard for stainless steel |
| 3-A Sanitary Standard 74 | Sanitary hose end fittings for food/dairy industry |
| FDA 21 CFR 177.2600 | Food-contact rubber and hose material compliance |
| EC 1935/2004 | EU food-contact materials regulation |
| EHEDG Guidelines | European Hygienic Engineering & Design Group – hygienic design |
| RoHS / REACH | Hazardous substance compliance for export markets |
Why Choose Stainless Steel Fittings India for SS Crimp Ferrules?
- 25+ Years of Manufacturing Experience: Established SS precision machining facility in Jamnagar, India with dedicated CNC turning capacity for hose fittings.
- In-house Cold Forging + CNC Machining: Dual-process capability allows cost-efficient production of both standard and custom ferrule profiles.
- Material Traceability: Every batch supplied with EN 10204 3.1 Mill Test Certificates. Chemical composition and mechanical properties fully documented.
- Competitive Export Pricing: Direct factory supply to OEM hose assemblers and distributors in USA, UK, Germany, Australia, UAE, and Southeast Asia.
- Custom OEM Service: Accept customer drawings, samples, or CAD files. Prototypes in 7–10 working days.
- Full Range in One Source: Hose nipples, hose barbs, hose barb fittings, hose adapters, and crimp ferrules available from a single supplier for complete hose assembly kits.
- Strict QC: 100% dimensional inspection, AQL sampling for surface finish and passivation, hydrostatic test records available on request.
- Small and Large Orders: MOQ from 100 pieces for custom sizes; standard sizes stocked for immediate dispatch.
FAQ – Stainless Steel Hose Crimp Ferrules
Q1. What is the difference between a crimp ferrule and a swage ferrule?
A crimp ferrule is deformed radially using a multi-die crimping machine (6 or 8 dies) to compress onto the hose outer cover. A swage ferrule is pushed axially through a swaging die that reduces its OD progressively. Both achieve similar hose retention performance; crimping is more common for on-site hose assembly due to portability of crimping machines.
Q2. Can SS crimp ferrules be used on rubber hydraulic hoses?
Yes. SS 304/316 crimp ferrules are dimensioned to suit rubber hose outer diameters and are used whenever carbon steel ferrules are unsuitable due to corrosive environments. The crimp diameter settings are the same as for equivalent carbon steel ferrules of the same hose standard.
Q3. What size SS crimp ferrules do you manufacture?
We manufacture stainless steel crimp ferrules for hose IDs from 1/4″ (6 mm) up to 4″ (102 mm), covering standard hydraulic hose sizes 1/4″, 3/8″, 1/2″, 5/8″, 3/4″, 1″, 1¼”, 1½”, 2″, and 2½”. Custom sizes are available on request.
Q4. Do you supply crimp ferrules with material test certificates?
Yes. All stainless steel crimp ferrules are supplied with EN 10204 Type 3.1 Mill Test Certificates showing the chemical composition (C, Mn, Si, Cr, Ni, Mo, P, S) and mechanical properties (Rm, Rp0.2, A%) of the bar stock used.
Q5. What is the minimum order quantity for SS crimp ferrules?
For standard sizes (SS 316, common hydraulic hose ferrules), MOQ is 100 pieces per size. For custom OD/ID/length or special surface finish (electropolished, special tolerance), MOQ is negotiable based on machining setup. Contact our sales team for a specific quote.
Q6. Are these ferrules compatible with non-skive (no-skive) hose assembly?
Yes. We supply both skive and no-skive (non-skive) crimp ferrule designs. The no-skive ferrule has an internally tapered or stepped bore profile designed to accommodate the outer cover of the hose without requiring removal (skiving) of the hose outer layer prior to assembly. Specify “non-skive” when ordering.
Q7. What surface finishes are available for pharma-grade crimp ferrules?
For pharmaceutical, biotech, and food-grade applications, we supply: (a) Electropolished SS 316L with Ra ≤ 0.4 µm internal and external; (b) Bead-blasted matt finish Ra ≤ 0.8 µm; (c) Passivated per ASTM A967. All finishes are fully documented with inspection certificates.
Q8. Can you manufacture SS crimp ferrules to customer drawings or samples?
Yes. We accept DXF/DWG/STEP CAD files, detailed engineering drawings (PDF), or physical samples for reverse engineering. Prototype samples are delivered within 7–10 working days. Production lead time after sample approval is typically 3–4 weeks.
Q9. What is the price of SS 316 crimp ferrules?
Stainless Steel 316 Crimp Ferrules are priced starting from US$ 11.50 per kilogram (ex-works Jamnagar, India) for standard sizes in lot quantities. The per-piece price depends on the ferrule dimensions, wall thickness, and order quantity. Contact us for a volume pricing schedule.
Q10. What countries do you export SS crimp ferrules to?
Stainless Steel Fittings India exports SS hose crimp ferrules and hose fittings to USA, UK, Germany, France, Netherlands, Sweden, Denmark, Norway, Finland, Australia, New Zealand, UAE, Saudi Arabia, Singapore, and Canada. We supply to hydraulic hose assembly OEMs, fluid power distributors, EPC contractors, and process industry maintenance teams worldwide.
Equivalent Terms in Other Languages
| Language | Equivalent Terms |
|---|---|
| Spanish | Férula de manguera en acero inoxidable, Collarín de prensado inoxidable, Manguito de crimpar para manguera |
| Russian | Обжимная муфта из нержавеющей стали, Обжимной хомут для шланга, Стальная обжимная втулка |
| French | Virole de sertissage en inox, Collier de sertissage inoxydable, Embout de sertissage tuyau |
| Portuguese | Ferrule de compressão em aço inoxidável, Colar de crimpagem de mangueira, Manga de fixação em inox |
| Italian | Ghiera di crimpaggio in acciaio inossidabile, Collare di crimpatura per tubo flessibile, Bussola di serraggio inox |
Related Products – Internal Links
- Stainless Steel Male Hose Barbs
- Stainless Steel Female Hose Barbs
- Stainless Steel Hose Connectors
- Stainless Steel Hose Couplings
- Stainless Steel Hydraulic Hose Fittings
- Stainless Steel Compression Fittings
- Stainless Steel Pipe Fittings
Request a Quote – SS Crimp Ferrules
For pricing, availability, technical drawings, and custom manufacturing of Stainless Steel Hose Crimp Ferrules and Crimp Collars in SS 304, SS 316, or SS 316L, contact Stainless Steel Fittings India. Our team responds within 24 hours on business days.
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