HP actuator o-rings

[chromatographer]

Does anyone know the o-ring sizes needed to rebuild one of the old blocky HP valve actuators? I just took ours apart and the old rubber o-rings are like hard plastic now. I believe there are 3 o-rings needed for a rebuild. Thanks!

[AICMM]

chromatographer,

Take them down to your local automotive store or hardware store (good hardware store, not plastic packages but real people) and they should have a sizing cone.

Best regards,

AICMM

[chromatographer]

Thanks AICMM, but I was hoping to get someone to do that work for me We have a large o-ring inventory and some sizing charts and cones here and it's looking like it's a 108, a 215 and an 024. The 215 didn't seem to fill the piston groove as well as it should but it's working for now.

[GasMan]

Chromotographer,

You are correct in saying that there are three 'O' rings to replace. These 'O' rings should be made from a Fluorocarbon material. The sizes are as follows

1. 1.176 inch i.d. Agilent P/N 0905-1405

2. 1.046 inch i.d. Agilent P/N 0905-0463

3. 0.239 inch i.d. Agielnt P/N 0905-0103

Gasman