Flexible bulkhead alternative streamlines custom aquarium-plumbing installations. Flexible Grommet (Uni Seal) is a versatile sealing flange that instantly provides a watertight and vapor-tight seal. Flexible yet extremely noncorrosive PVC construction allows fast, easy and reliable installation on flat or curved aquarium surfaces. Flexible Grommet (Uni Seal) is a great alternative to standard bulkheads and is especially useful for installations involving curved aquarium surfaces or if space is limited.
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