The Granatelli 3.6-inch union sleeve spare describes a replacement union sleeve for dual-seal clamp systems noted at roughly 3.5–3.6" (89mm) dimensions in aluminum. Sold as an individual spare, it restores the mating surface for a dual-seal clamp assembly and is useful for repairs or custom piping where the sleeve must be replaced to re-establish a sealed union.
Granatelli 3.6in Union Sleeve Spare Aluminum Dual Seal Clamp