Best quality red rubber. Shore hardness in range 46-55. Bottom diameter moulded on top face. Resistant to dilute acids, alkalis a
Includes packs of 10 stoppers of the following sizes:
• Solid 13 x 16
• Solid 19 x 22.5
• One hole 19 x 22.
• Solid 31 x 36
• Two hole 31 x 36mm
Pack of 50.