BS ISO 6149-4:2006 pdf download.Connections for fluid power and generaluse —- Ports and studends with ISO 261 metric threads andO-ring sealing —— Part 4: Dimensions, design, test methods and requirements for externa lhex and internal hex port plugs.
6 0-rings
Unless otherwise specified, for use at the pressure and temperature requirements in 5.1 and Table 3 and for testing, the 0-rings shall
- be made of NBR (futile) with a hardness 01(90 ± 5) IRHD, measured in accordance with ISO 48.
— conform to the dimensions shown in Figure 3 and given in Table 4, and
- meet or exceed the O-nng quality acceptance criteria for grade N of ISO 3601-3:2005.
Tolerances on 0-ring dimensions shall be in accordance with 1506149-2.
7 Test methods
Porl plug tests shall be conducted In accordance with ISO 19879 for burst, cydic endurance (Impulse) and vacuum The qualification test torques given in Table S shall be used in testing. Test results shall be reported on the test data form In ISO 19879.
8 Designation of port plugs
Port plugs shall be designated by an alphanumeric code to facilitate ordering. They shall be designated by the word ‘Plug’, then a space, followed by ISO 6149-4, then a hyphen, followed by the shape code PLEH for external hex or PItH for internal hex, followed a hyphen, followed by the plug size, followed by the 0-ring code NBA for plugs delivered with an 0-ring that conforms to the requirements of Clause 6. If desired, the code may be supplemented by a hyphen followed by the plating code in accordance with ISO 4042 or ISO 10683, followed by hyphen, followed by the 0-ring material code In accordance with ISO 1629.
Unless otherwise specified, for use at the pressure and temperature requirements in 5.1 and Table 3 and for testing, the 0-rings shall
- be made of NBR (futile) with a hardness 01(90 ± 5) IRHD, measured in accordance with ISO 48.
— conform to the dimensions shown in Figure 3 and given in Table 4, and
- meet or exceed the O-nng quality acceptance criteria for grade N of ISO 3601-3:2005.
Tolerances on 0-ring dimensions shall be in accordance with 1506149-2.
7 Test methods
Porl plug tests shall be conducted In accordance with ISO 19879 for burst, cydic endurance (Impulse) and vacuum The qualification test torques given in Table S shall be used in testing. Test results shall be reported on the test data form In ISO 19879.
8 Designation of port plugs
Port plugs shall be designated by an alphanumeric code to facilitate ordering. They shall be designated by the word ‘Plug’, then a space, followed by ISO 6149-4, then a hyphen, followed by the shape code PLEH for external hex or PItH for internal hex, followed a hyphen, followed by the plug size, followed by the 0-ring code NBA for plugs delivered with an 0-ring that conforms to the requirements of Clause 6. If desired, the code may be supplemented by a hyphen followed by the plating code in accordance with ISO 4042 or ISO 10683, followed by hyphen, followed by the 0-ring material code In accordance with ISO 1629.
