This GL 14 open top cap, with a silicone rubber seal and a bent connector, enables the connection of cooling or vacuum hose by simply screwing onto the GL glass thread instead of forcing tubing over a serrated glass connector.
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This GL 14 open top cap, with a silicone rubber seal and a bent connector, enables the connection of cooling or vacuum hose by simply screwing onto the GL glass thread instead of forcing tubing over a serrated glass connector.
