| Cobolt expandable scupper plugs are used for sealing scupper holes for spilled oil or polluted liquids. The plugs are inserted into the drain holes and tightened the handle until a slight resistant is felt. The rubber parts are made of oil resistant rubber. Seven sizes are available.
- High quality brass/bronze casting.
- Expanding sleeves are of NBR oil resistant rubber component are machined to form leak proof seal when expanded against a
pipe.
- Size are in conformity with standard ISSA codes.
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