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LLG Labware 

LLG-Crimp Seals ND20 (Complete Tear Off Caps), Aluminium, unassembled

Colour septa:Grey
Thickness:3.00 mm
Shore hardness:37 A
Septa type:Stopper
ColourWith holeMaterial septaPKCat. No. 
Silver Butyl1007060479
SilverNo 1007056751