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Parker 8-145 backup ring envelope (uncut)

Parker 8-145 backup ring envelope (uncut): ID 2.581 in (65.56 mm), OD 2.753 in (69.93 mm), thickness 0.053 in (1.35 mm); for the AS568 -145 O-ring

Exact dimensions. True size, no tolerance added. Threads are plain cylinders at the major diameter.

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Dimensions

dash8-145
ID (in)2.581
OD (in) = ID + 2W2.753
radial width W (in)0.086
thickness T (in)0.053
ID (mm)65.56
OD (mm)69.93
T (mm)1.35
cross-checkMcMaster ID and OD agree
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From the full sheet

Backup rings for AS568 O-rings (Parker 8-xxx Parbak, 8-004 to 8-475): ID, OD, width and thickness per dash size: every size, notes, mating features and sources. What are the ID, OD and thickness of an 8-214 (or 8-110, 8-325) backup ring for an AS568 O-ring?

Other sizes