BSP Parallel Male x ORFS Male 90° Compact Elbow

BSPP into the port, ORFS flat face out to the hose, at 90°. Fitted where a machine has been upgraded to O-ring face seal hose ends but the ports remain BSP, which is increasingly common on rebuilt and re-hosed plant.

Brand: Ayrtec – carbon steel body, zinc plated, manufactured to the standards listed below.

Watch: Exploring Hydraulic Adaptors Part 1: Difference Between Branch Tee & Run Tee, Elbows Short and Long

Thread Standards

• BSP Parallel Male – BSPP to ISO 228. It seals on a bonded washer against the port face or on a 60° cone, never on the thread itself.
• ORFS Male – SAE J1453 O-ring face seal. It seals on an O-ring sitting in the flat face groove, never on the thread.

How to Choose

• Two soft seals and no tape: a bonded washer at the BSPP end, a face O-ring at the ORFS end.
• Match the ORFS flat face diameter, not just the thread. ORFS threads repeat across different face sizes.
• Check the face O-ring is present and seated before assembly.

Where You’ll Find It

• BSP Parallel Male – Valve and manifold ports on Australian, British and Asian-built equipment, and most locally made hose ends. The default port thread on Australian truck and agricultural hydraulics.
• ORFS Male – High-pressure, high-vibration circuits on late-model excavators, drill rigs, crushers and forestry gear.

Cross-Reference

• BSP Parallel Male – BSPP to ISO 228 / BS 2779, written G. Also called BSP parallel or gas thread.
• ORFS Male – SAE J1453 / ISO 8434-3 O-ring face seal. Parker call this series Seal-Lok. Also written ORFS or flat face.

Parker, Gates, Aeroquip and Ryco all manufacture to these same standards under their own part numbering, so a fitting built to the standard above will mate with theirs.

Cross-references are given at series level as a guide to the standard, not as a part-for-part substitution. Always confirm the thread form, size and seal type against the port before ordering.

Technicians Advice

ORFS is chosen because it survives vibration better than a cone. That advantage disappears if the O-ring is nicked going on, so wipe the face, roll the O-ring into its groove rather than stretching it over the thread, and bring the nut up square.

Dimensions

Downloads

📄 Thread Identification Chart (PDF)

Same Threads, Other Angles

🔗 Straight – same threads🔗 45° Compact – same threads

Need a hand? Call 1300 146 737 or email sales@mhfgc.com.au – real technicians, real answers.