sourcing map White Tapered Shaped Solid Rubber Stopper for Lab Tube Stopper Size 79-90mm 1pcs

Descriptions:
1. Not easy to deform, moderate hardness, manufactured according to standards, materials
2.High elasticity, good insulation and sealing performance, high temperature resistance ,acid and alkali resistance, will not dissolve and swell in acidic liquids.
3.Normal using: Can be used to block glass ports, pipe mouths, fish tank openings, etc.
Note: Due to manua...