Currently there is no ISO standard comparable to SAE J51 5, specifically applying to O-rings for hydraulic system connections. We hope to use the SAE J51 5 document as the basis for a new ISO standard to fill this void. At the last ISO meeting, this topic was initiated and it was requested that we consider the existing DIN 3771 -3 — Fluid Systems: O-Rings; Materials, Field of Application document requirements also. For the NBR90 materials, DIN 3771 specifies a minimum operation temperature of –30 °C. This is not the only difference between the SAE and DIN documents, but addressing this issue now would remove one potential conflict for the future.
Reference Section
SAE AS568A—Aerospace Size Standard for O-Rings
SAE AS871 —Manufacturing and Inspection Standards for Preformed Packings (O-Rings)
SAE J1 20—Rubber Rings for Automotive Applications
SAE J200—Classification System for Rubber Materials
SAE J51 8—Hydraulic Flanged Tube, Pipe, and Hose Connections, 4-Bolt Split Flange Type
SAE J1 453-2 1 —Specification for O-Ring Face Seal Fittings—Part 2: Fittings with SAE J1 926/2
(ISO 1 9926-2), Inch Stud Ends
SAEJ1 453-3 1 —Specification for O-Ring Face Seal Fittings—Part 3: Fittings with SAE J2244-2
(ISO 61 49-2), Metric Stud Ends
SAEJ1 926-2—Connections for Fluid Power and General Use—Ports and Stud Ends with ISO 725 Inch Threads and O-Ring Sealing—Part 2: Heavy-Duty (S Series) Stud Ends—Dimensions, design, Test Methods and Requirements
SAEJ1 926-3—Connections for Fluid Power and General Use—Ports and Stud Ends with ISO 725 Inch Threads and O-Ring Sealing—Part 3: Light-Duty (L Series) Stud Ends—Dimensions, Design, Test Methods, and Requirements
SAEJ2244-2—Connections for Fluid Power and General Use—Ports and Stud Ends with ISO 261
Metric Threads and O-Ring Sealing—Part 2: Heavy-Duty (S Series) Stud Ends—DImensions, Design, Test Methods, and Requirements
SAEJ2244-3—Connections for Fluid Power and General Use—Ports and Stud Ends with ISO 261
Metric Threads and O-Ring Sealing—Part 3: Light-Duty (L Series) Stud Ends—Dimensions, Design, Test Methods, and Requirements
ASTM D 395—Test Methods for Rubber Property—Compression Set
ASTM D 41 2—Test Methods for Rubber Properties in Tension
ASTM D 471 —Test Method for Rubber Property—Effect of Liquids
ASTM D 624—Test Method for Rubber Property—Tear Resistance
ASTM D 865—Test Method for Rubber—Deterioration by Heating in Air (Test Tube Enclosure)
ASTM D 1 329—Method for Evaluating Rubber Property—Retraction at Lower Temperatures (TR Test)
ASTM D 1 41 4—Methods of Testing Rubber O-Rings
ASTM D 1 41 5—Test Method for Rubber Property—International Hardness
ASTM D 2000—Classification System for Rubber Materials in Automotive Applications
ASTMD21 37—Standard Test Methods for Nonvolatile Matter in Halogenated Organic Solvents and Their Admixtures
ASTM D 2240—Test Method for Rubber Property—Durometer Hardness
SO 48:1 979—Vulcanized rubbers—Determination of hardness (Hardness between 30 and 85 IRHD)
ISO1101:1983—Technical drawings—Tolerancing of form, orientation, location and run-out—Generalities, definitions, symbols, indications on drawings
ISO 1 302:1 978—Technical drawings—Method of indicating surface texture on drawings
ISO 3448:1 975—Industrial liquid lubricants—ISO viscosity classification
ISO3601 -1 :1 987—Fluid systems—O-rings—Part 1 : Inside diameters, cross sections, tolerances, and size identification
ISO 3601 -3:1 987—Fluid systems—Sealing devices—O-rings—Part 3: Quality acceptance criteria
ISO 5598:1 985—Fluid power systems and components—Vocabulary
ISO61 49-2—Connections for fluid power and general use—Ports and stud ends with ISO 261 metric threads and O-ring sealing—Part 2: Heavy duty (S series) stud ends—Dimensions, design, test methods and requirements
ISO61 49-3—Connections for fluid power and general use—Ports and stud ends with ISO 261 threads and O-ring sealing—Part 3: Light duty (L series) stud ends—Dimensions, design, test methods and requirements
ISO61 62—Hydraulic fluid power—Four-screw split-flange connections for use at pressures of 2.5 MPa to 40 MPa—Type I inch series and type II metric series
ISO 8434-3—Metallic tube connections for fluid power and general use—Part 3: O-ring face seal fitting
ISO1 1 926-2—Connections for fluid power and general use—Ports and stud ends with ISO 725 threads and O-ring sealing—Part 2: Heavy duty (S series) stud ends—Dimensions, design, test
methods, and requirements
ISO1 1 926-3—Connections for fluid power and general use—Ports and stud ends with ISO 725 threads and O-ring sealing—Part 3: Light duty (L series) stud ends—Dimensions, design, test methods, and requirements
DIN 3771 -3—Fluid Systems: O-Rings; Materials, Field of Application
MIL-STD-41 3—Visual Inspection Guide for Elastomeric O-Rings
MIL-R-83248C:1 994—Rubber, Fluorocarbon Elastomer, High Temperature, Fluid, and Compression Set Resistant