Salisbury diff pinion seal and gasket

Replacing the pinion seal on my Salisbury diff soon. I'm going with marking the nut and casing then counting the turns approach. Any useful hints before I get started?

Figure I will replace the cork gasket on casing whilst diff is drained. I've seen a few people suggesting to use blue hylomar on it whilst others say just a bit of oil. What's best?

Any advice appreciated, cheers Richard

Pinion seal now done.

Cover gasket per service manual... " Fit the differential cover and new gasket, coating both sides of the gasket with Hylomar PL 32M or an equivalent non-setting sealant".

Hylomar website suggests that this is just Hylomar blue (now the aerospace version, but when the service manual was written it meant the original stuff). Info @ Hylomar Sealant

Off back under the landy.

What no pictures?