# SAE J1453 (ORFS) — Hydraulic and pipe connection type identification

For SAE J1453 (ORFS), governing standard is SAE J1453; region of origin is American Connections; thread type (tapered or parallel) is straight thread; seat or flare angle is flat face; seal method is The male connector has a straight thread and an O-ring in the face. The female has a straight thread and a machined flat face. The seal takes place by compressing the O-ring onto the flat face of the female, similar to the split flange type fitting, recorded from its source on 2026-08-13.

- **Connection type:** SAE J1453 (ORFS) _(verified: appears in the quote below)_
- **Governing standard:** SAE J1453 _(verified: appears in the quote below)_
- **Region of origin:** American Connections _(our reading, not quoted from the source)_
- **Thread type (tapered or parallel):** straight thread _(verified: appears in the quote below)_
- **Seat or flare angle:** flat face _(verified: appears in the quote below)_
- **Seal method:** The male connector has a straight thread and an O-ring in the face. The female has a straight thread and a machined flat face. The seal takes place by compressing the O-ring onto the flat face of the female, similar to the split flange type fitting. _(verified: appears in the quote below)_

## What the source says

> SAE J1453 (ORFS) O-ring Face Seal connections are considered the best for leak control. The male connector has a straight thread and an O-ring in the face. The female has a straight thread and a machined flat face. The seal takes place by compressing the O-ring onto the flat face of the female, similar to the split flange type fitting. The threads maintain the connection mechanically.

## Source

- https://brennaninc.com/connection-types/

Last verified: 2026-08-13. Review by: 2028-08-12.
Part of [Hydraulic and pipe connection type identification](https://referencesource.org/hydraulic-pipe-connection-types/).