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The Grams Performance bottom adapter small O-ring is a Viton seal designed for 11mm injector bottoms. Measuring 7.5mm ID by 11.5mm OD with a 1.8mm width, this single-piece O-ring supports reliable sealing when used with compatible top/bottom adapter kits. It’s intended for service or replacement of worn injector seals in compatible installations.
Grams Performance Bottom Adapter Small O-Ring
