WHEATON 224100-282 Rubber Stopper, 20×28mm, Shinetek Instruments Research Institute (CAT#: STEM-L-4823-LGZ)

Various sizes and specifications are available.
High-quality raw materials ensure the quality of the product.
Straight-through plugs provide maximum tightness with straight wall finish.
Snap-on stoppers are suitable for blow-back ports, such as: serum bottles, vials, etc.
Skirt Plugs provide a full skirt for non-gripping serum bottle closures.
Autoclaved.

Applicable bottle ID×Odmm: 20×28
Type: Two-pronged plug - for lyophilization
Material: Gray Butyl Rubber
Hardness: 50
Inner packing (single): 100
PCS/Box: 1000

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WHEATON 224100-330 Rubber Stopper, 15×30mm, Shinetek Instruments Research Institute (CAT#-STEM-L-4825-LGZ)
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