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SAE thread ORFS Fittings size chart

Date:Apr 02, 2020

O-Ring Face Seal (SAE J1453)

This connection forms an impressive leak resistance and can be used in applications up to 6000 psi. The male half of the connection has an O-ring with a straight thread. The female half has a machined flat surface with a straight thread. A seal takes place when the O-ring on the male end is squeezed onto the female flat surface seat. The swivel nut on the female half holds the connection together.

 

Inch size

Dash size

Thread Size

Male Thread O.D. (in)

Female thread O.D (in)

1⁄4

-4

9⁄16 - 18

9⁄16

0.56

17⁄32

0.51

3⁄8

-6

11⁄16 - 16

11⁄16

0.69

5⁄8

0.63

1⁄2

-8

13⁄16 - 16

13⁄16

0.82

3⁄4

0.75

5⁄8

-10

1 - 14

1

1.00

15⁄16

0.93

3⁄4

-12

1 3⁄16 - 12

13⁄16

1.19

1 1⁄8

1.11

1

-16

1 7⁄16 - 12

1 7⁄16

1.44

1 3⁄4

1.36

1 1⁄4

-20

1 11⁄16 - 12

1 11⁄16

1.69

1 5⁄8

1.61

1 1⁄2

-24

2-12

2

2.00

1 15⁄16

1.92


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