ISO 8434-3 and SAE J1453 is the same standard for O-ring face seal fittings.
ISO 8434-3 is Metallic tube connections for fluid power and general use for Part 3: O-ring face seal connectors, also called ORFS fittings.
SAE J1453 is for O-Ring Face Seal Connectors: Part 1 - Tube Connection Details and Common Requirements for Performance and Tests
ISO 8434-3 and SAE J1453 differences as follows
ISO 8434-3 has metric ORFS fittings and inch orfs tube fittings.ISO 8434-3 is based on the USA standard ANSI/SAE J1453. The threads for the O-ring face seal connection are unified inch threads to ISO 263. The inch threads were not changed to metric threads to ISO 261 to allow connectors complying with this standard to be used in existing applications without requiring a change to tube or hose assemblies. Also, the thread-to-nut overtorque and seal performance have been extensively tested; to change to metric threads would require an extensive test program at considerable cost without providing any functional improvement.
SAE J1 453 is only inch orfs tube fittings, was published as a single document covering the requirements for inch O-ring face seal connectors with SAE J 1 926-2 inch stud ends. In 1 995 ISO 8434-3 was published covering the requirements for O-ring face seal connectors with ISO 61 49-2 metric stud ends. This revision of SAE J1 453 adopts the parts covered within ISO 8434-3 and the rationalized dimensions from ISO 8434-3 for both the inch and metric stud end face seal connectors.
ISO 8434-3 scope is specifies the general and dimensional requirements for the design and performance of O-ring face seal connectors made of steel for tube outside diameters or hose inside diameters of 6 mm through 38 mm, inclusive. These connectors are for use in fluid power and general applications where elastomeric seals can be used to prevent fluid leakage, including leakage caused by variations in assembly procedures. They are intended for the connection of tubes and hose fittings to ports in accordance with ISO 6149-1. (See ISO 12151-1 for related hose fitting specification.)
These connectors provide leakproof, full-flow connections in hydraulic systems operating from a vacuum of 6,5 kPa [0,065 bar 3) ] absolute pressure to the working pressures shown in Table 1. Because many factors influence the pressure at which a system performs satisfactorily, these values shall not be understood as guaranteed minimums. For every application, it is recommended that sufficient testing be conducted and reviewed by both the user and manufacturer to ensure that required performance levels are met.
The three parts of SAE J1 453 cover material , dimensional , and performance requirements of steel O-ring face seal (ORFS) connectors for tubing and the O-ring face seal interface and nut of hose stem assemblies for nominal tube diameters of 6 mm through 50 mm.
SAE J1453-1 - Specifications for O-Ring Face Seal Connectors - Part 1: Tube Connection Details and Common Requirements for Performance and Tests
SAE J1 453-2 - Specifications for O-Ring Face Seal Connectors - Part 2: Requirements , Dimensions , and Tests for Steel Unions , Bulkheads , Swivels , Braze Sleeves , Connectors ,Caps , and Connectors with ISO 61 49-2 , Metric Stud Ends
SAE J1 453-3 - Specifications for O-Ring Face Seal Connectors - Part 3: Requirements , Dimensions , and Tests for Steel Unions , Bulkheads , Swivels , Braze Sleeves , Connectors , Caps , and Connectors with SAE J1 926-2 Inch Stud Ends
ISO 8434-3 standard references as follows:
ISO 48, Rubber, vulcanized or thermoplastic — Determination of hardness (hardness between 10 IRHD and 100 IRHD)
ISO 68-2, ISO general-purpose screw threads — Basic profile — Part 2: Inch screw threads
ISO 261, ISO general-purpose metric screw threads — General plan
ISO 263, ISO inch screw threads — General plan and selection for screws, bolts and nuts — Diameter range 0,06 to 6 in
ISO 3304, Plain end seamless precision steel tubes — Technical conditions for delivery
ISO 3305, Plain end welded precision steel tubes –– Technical conditions for delivery
ISO 3601-3:— 4) , Fluid systems –– Sealing devices –– O-rings –– Part 3: Quality acceptance criteria
ISO 4759-1, Tolerances for fasteners –– Part 1: Bolts, screws, studs and nuts –– Product grades A, B and C
ISO 5598, Fluid power systems and components –– Vocabulary
ISO 5864, ISO inch screw threads –– Allowances and tolerances
ISO 6149-1, Connections for fluid power and general use — Ports and stud ends with ISO 261 threads and O-ring sealing –– Part 1: Ports with O-ring seal in truncated housing
ISO 6149-2:— 7) , Connections for fluid power and general use — Ports and stud ends with ISO 261 threads and O-ring sealing –– Part 2: Heavy-duty (S series) stud ends –– Dimensions, design, test methods and requirements
ISO 8434-1, Metallic tube connections for fluid power and general use — Part 1: 24° cone connectors
ISO 8434-2, Metallic tube connections for fluid power and general use — Part 2: 37° flared fittings
ISO 9227, Corrosion tests in artificial atmospheres –– Salt spray tests
ISO 12151-1, Connections for hydraulic fluid power and general use — Hose fittings –– Part 1: Hose fittings with ISO 8434-3 O-ring face seal ends
ISO 19879, Metallic tube connections for fluid power and general use — Test methods for hydraulic fluid power connections
SAE J1453 standard references as follows:
SAE J356 Welded Flash-Controlled Low-Carbon Steel Tubing Normalized for Bending , Double Flaring , and Beading
SAE J515 Specification for O-Ring Materials Used with Hydraulic Connectors
SAE J524 Seamless Low-Carbon Steel Tubing Annealed for Bending and Flaring
SAE J525 Welded and Cold Drawn Low-Carbon Steel Tubing Annealed for Bending and Flaring
SAE J846 Coding Systems for Identification of Fluid Conductors and Connectors
SAE J1453-2 Specification for O-Ring Face Seal Connectors: Part 2 - Requirements , Dimensions , and Tests for Steel Unions , Bulkheads , Swivels , Braze Sleeves , Caps , and Connectors with ISO 61 49-2 Metric Stud Ends
SAE J1453-3 Specification for O-Ring Face Seal Connectors: Part 3 - Requirements , Dimensions , and Tests for Steel Unions , Bulkheads , Swivels , Braze Sleeves , Caps , and Connectors with SAE J1 926-2 Inch Stud Ends
SAE J1 926-2 Connections for General Use and Fluid Power - Ports and Stud Ends with ASME B1.1 Threads and 0-Ring Heavy-Duty (S Series) Stud Ends
SAE J2593 Information Report for the Installation of Flu id Conductors and Connectors
ASME B1.1 Unified Inch Screw Threads
ASME B46.1 Surface Texture (Surface Roughness , Waviness and Lay)
ASTM B 633 Standard Specifications for Electrodeposited Coatings of Zinc on Iron and Steel
ASTM B 1 1 7 Method of Salt Spray (Fog) Test