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SAE J1453 o ring face seal Groove size chart

Date:Jun 10, 2019

O-ring face seal connections tube fittings are according to SAE J1453 and ISO 8434-3 standards, Surface finish acceptance criteria for O-ring face seal groove design connection (typical for all styles) very important.


O ring groove dimensions drawing

SAE_J1453_o-ring_face_seal_Groove_size_chart

a Pitch diameter.

b Groove outside diameter.

c Sharp edge or burr not allowed; break corner 0,15 max.

d Optional construction for shapes and long straights.

e Minimum full thread depth.

f Groove style A – Groove providing improved retention of O-ring – Option 1.

g Groove style A – Groove providing improved retention of O-ring – Option 2.

h Groove style B.

i Screw threads


SAE  J1453 ORFS Groove and orfs o ring sizes chart as follows:

SAE_J1453_o-ring_face_seal_dimensions_chart

Dimensions in millimetres

O-ring Surface B d f i 1 i 5 d 4 Tube outside diameter Thread a Outside diameter Inside diameter nom. tol. ± 0,4 min. nom. tol. min. max.

6 9/16-18 UNF 2,4 ± 0,3 10 9 7,65 ± 0,16 11,08 6,1

8 5/8-18 UNF 2,4 ± 0,3 10 9 8,5 ± 0,16 11,93 6,95

10 11/16-16 UN 2,8 ± 0,4 11 10,5 9,25 ± 0,17 12,68 7,7

12 13/16-16 UN 2,8 ± 0,4 13 12 12,42 ± 0,19 15,85 10,87

16 1-14 UNS 3,1 ± 0,4 15,5 14 15,6 ± 0,2 19,08 14,1

20 1 3/16 -12 UN 3,7 ± 0,5 17 15 18,77 ± 0,22 22,27 17,25

22 1 5/16 -12 UN 3,7 ± 0,5 17,5 15,5 21,95 ± 0,23 25,45 20,43

25 1 7/16 -12 UN 3,7 ± 0,5 17,5 15,5 23,52 ± 0,24 26,97 21,95

30 1 11/1 6 -12 UN 3,7 ± 0,5 17,5 15,5 29,87 ± 0,29 33,38 28,3

38 2-12 UN 3,7 ± 0,5 17,5 15,5 37,82 ± 0,36 41,3 36,22


Dash Size O-Ring Cross-Section O-Ring Diameter

-005 0.070 0.101

-006 0.070 0.114

-007 0.070 0.145


a In accordance with ISO 68-2 and ISO 5864:1993, Class 2A, and Annex A, except for 1-14 UNS. See Annex A for 1-14 UNS thread dimensions.



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