Bell jar and cylinder vacuum chambers typically use L gaskets to create a seal. The L gasket, named for its "L" shaped cross section, creates a tight seal between two mating surfaces. The seal helps prevent leakage by filling in any surface irregularities. Our metal band clamps can be used to secure or hold a L gasket in place. You may also slightly lubricate the L gaskets with silicone vacuum grease to improve the sealing capability.
Fits 12.75" OD vacuum chambers.
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