[Al Skierkiewicz]

Tom,
The response to your Q&A appears to be a perfect definition of the linked McMaster product shown above. It is at least one of the products we discussed when this rule went into the robot rules. The linked page showing cross section is in my opinion, a 'not to scale' drawing to indicate the correct use of this product based on seal lubricant. The lubrication of the seal is essential to the expected life cycle of the shock. This "lubrication oil" is under the same rule as other lubricants in R17.
This answer does point to fluid filled shocks which do not meet the rule.