ZZHXSM 12PCS 28mm Bakelite Phenolic Resin Sealing Screw Caps Black

Specification: Name:phenolic resin cap Diameter:28mm Material: phenolic resin (bakelite) Colour:black Package includes: 12 polythene sealing screws Features: White tin bottle cap with teeth around it, you can easily tighten the cap which makes it easier to grip and seal. Can be used with Boston glass bottle, sodium lime material, pharmaceutical grade, Bakelite cap with conical LDPE stopper inside, can be used for chemical reagents, flavours and fragrances, essential oils and so on. Professional moulding bottle, laboratory choice chemical bottle, corrosion resistant, acid and alkali resistant, good sealing.

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