Flare Fitting Manufacturer, Supplier & Exporter
A flare fitting joins tubing by flaring the tube end into a cone that is clamped against a matching cone on the fitting body, giving a metal-to-metal seal. Raaj Fittings manufactures and exports 37° flare fittings to SAE J514 and ISO 8434-2 (JIC) and 45° flare fittings, in stainless steel and carbon steel, for hydraulic, refrigeration and high-pressure pneumatic tubing.
Flare fittings are valued where joints are taken apart often: the flared cone can be disconnected and remade many times without losing its seal. 37° JIC fittings are the standard in North American hydraulic practice and on much mobile and industrial equipment, while 45° flares are common in refrigeration and fuel lines.
All flare fittings are supplied with EN 10204 3.1 mill test certificates and full material traceability.
We export flare fittings to instrumentation contractors, OEMs and distributors across the Middle East and GCC, Europe and the Americas, in metric and imperial tube sizes with NPT or BSP ends to suit each market.
Flare Fittings Specifications
37° flare (JIC) and 45° flare
Unions, elbows, tees, male and female connectors, bulkheads and adapters
UNF flare threads; NPT, BSPT and BSPP port ends
Body, nut and sleeve, with flared tube end
Precision-machined from bar stock or forgings
EN 10204 3.1 mill test certificate; EN 10204 3.2 on request
Materials & Grades
We supply flare fittings in the following materials and grades. All grades are supplied with EN 10204 3.1 / 3.2 Mill Test Certificates.
Stainless Steel Flare Fittings
Stainless steel is the standard material for instrumentation tube fittings across oil and gas, petrochemical, pharmaceutical, and offshore applications. SS 316L is the most widely specified grade.
The industry default for instrumentation tube fittings — low carbon content prevents sensitisation; molybdenum addition provides superior chloride and acid resistance versus 304 grades.
Superior chloride and acid resistance — used where chloride exposure, marine atmosphere, or mild chemical service requires better corrosion resistance than 304.
General corrosion resistance at lower cost than 316L — suitable for water, steam, mild chemical, and food-grade applications where chloride exposure is limited.
Carbon Steel Flare Fittings
Carbon steel tube fittings are used in hydraulic systems, compressed air, general industrial service, and non-corrosive process applications where stainless steel is not required.
Precision-machined carbon steel bar stock — used in hydraulic circuits, compressed air distribution, and general industrial instrumentation where corrosion resistance is not required.
Electroplated zinc or phosphated finish for enhanced surface corrosion protection — used in carbon steel DIN 2353 hydraulic fittings and general instrumentation in non-aggressive environments.
How a Flare Joint Seals
The tube end is expanded with a flaring tool into a cone of the correct angle. A sleeve and nut are slid onto the tube before flaring. When the nut is tightened onto the fitting body, it pushes the flared tube end against the matching male cone of the body, forming a cone-to-cone metal seal. Because the seal is between two machined cones, it can be broken and remade repeatedly.
- Remakeable — ideal for connections opened often for maintenance.
- Metal-to-metal seal — no elastomer to age or swell.
- Vibration tolerant — the clamped cone holds well on mobile machinery.
- Widely standardised — SAE J514 / ISO 8434-2 components are widely available.
37° or 45°?
The two angles do not mate with each other. 37° JIC flare fittings are the norm for hydraulic systems; 45° flare fittings are used mainly in refrigeration, air-conditioning and some fuel and gas lines. Always confirm the flare angle and thread of the mating component before ordering.
Flare, Bite Type or Compression?
For metric hydraulic systems built to European practice, DIN 2353 bite type fittings are common. For instrumentation tubing, double ferrule compression fittings are generally preferred, as they need no flaring tool and seal reliably on gases. Flare fittings remain the best choice where JIC components are already standard on the equipment.
Applications & Industries
- Industrial and mobile hydraulic systems
- Refrigeration and air-conditioning tubing (45°)
- High-pressure pneumatic circuits
- Fuel, lubrication and gas lines on engines and machinery
- Aerospace and defence ground equipment (MS16142 dimensions)
Correct flaring is essential to a leak-free joint. The tube must be cut square, deburred and flared with a tool of the right angle so that the cone is concentric, smooth and free of cracks. Tubing for flaring should be ductile — annealed stainless steel or suitable carbon steel hydraulic tube — with a wall thickness within the range the flare standard allows. Flare fittings can be supplied with matching sleeves and nuts so that every joint uses components made to the same standard.
When ordering, give the flare angle, tube OD, configuration, port thread and material grade. See all tube fittings.
Testing, Inspection, Marking & Packing
Flare fittings are produced under our quality assurance process:
- Material verified by PMI testing, with full traceability
- Dimensional inspection of cone angle, seat finish, threads and hex sizes
- Thread gauging of flare and port threads
- Pressure testing on request
- Marking with material grade and heat code
Supplied with EN 10204 3.1 mill test certificates; EN 10204 3.2 certificates and third-party inspection on request.
Fittings are capped and bagged to keep ports clean, then boxed and packed in seaworthy wooden cases for export; marking, tagging and packing to your specification are available on request.
Why Choose Raaj Fittings for Flare Fittings?
Raaj Sagar Steels has supplied piping components since 2003 and today manufactures tube fittings at two plants in India for buyers in the Middle East, Europe and the Americas.
- Manufactured in-house — Flare fittings are made in our own plants, so material, dimensions and delivery stay under our control.
- Ready stock, short lead times — common sizes and grades are held in stock for prompt dispatch; other sizes, grades and specials are manufactured to order.
- Certified quality — ISO 9001:2015, ISO 14001:2015 and ISO 45001:2018 certified; PED 2014/68/EU supply available, and NACE MR0175 / ISO 15156 material on request.
- 100% material verification — PMI testing on incoming material and EN 10204 3.1 mill test certificates with every order; 3.2 certificates on request.
- Third-party inspection ready — we regularly work with SGS, Bureau Veritas, TÜV and DNV.
- Export documentation — MTCs, certificates of origin, packing lists and inspection reports to suit projects in the GCC, Europe and the Americas.
- Export packing — seaworthy packing with end and face protection, and packing to your specification on request.
- Fast response — our team replies to enquiries within one business day.
Flare Fittings — FAQs
A flare fitting seals a tube by clamping its flared, cone-shaped end against a matching cone on the fitting body, giving a metal-to-metal seal.
JIC refers to the 37° flare fitting standardised in SAE J514 and ISO 8434-2, widely used in hydraulic systems.
No. The cone angles are different and will not seal against each other.
They can be disconnected and remade many times without losing their seal, which suits equipment that needs frequent maintenance.
Stainless steel for corrosive and marine service, and carbon steel (plated) for general hydraulic use.
Yes. We supply flare fittings for projects under the European Pressure Equipment Directive (PED 2014/68/EU), with EN 10204 3.1 certificates as standard and 3.2 on request. NACE MR0175 / ISO 15156 compliant material is available for sour service in the Middle East and the Americas.
