Test Codes - ORFS Threads - RYCO Hydraulics

ORFS Threads

SAE J1453, ISO 8434-3

ORFS is O RING FACE SEAL

ORFS system consists of ORFS Male with O Ring in Face, which seals against Flat Seated ORFS Female Swivel Nut fitting.

The Swivel Nut can be slipped back to help installation in tight situations.

The prominent position of the O Ring on the Male fitting makes it easy to inspect the condition of the O Ring.

ORFS Threads

MALE THREAD OD & PITCH DASHED SIZE MALE THREAD OD FEMALE THREAD ID TUBE SIZE
inch-TPI mm inch mm inch inch
9/16 – 18 UNF -09 14,3 0.56 12,9 0.51 1/4
11/16 – 16 UN -11 17,3 0.68 16,0 0.63 3/8
13/16 – 16 UN -13 20,6 0.81 19,1 0.75 1/2
1 – 14 UNS -16 25,4 1.00 23,6 0.73 5/8
1.3/16 – 12 UN -19 30,0 1.18 28,2 1.11 3/4
1.7/16 – 12 UN -23 36,3 1.43 34,3 1.35 1
1.11/16 – 12 UN -27 42,7 1.68 40,6 1.60 1.1/4
2 – 12 UN -32 51,8 2.00 48,8 1.92 1.1/2

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