The 30W43B is a 43mm (43-400 neck finish) White continuous thread plastic cap with a .035" three-ply co-extruded polyethylene foam liner (F217 style). This closure is made of polypropylene (PP) plastic and fits our 43-400 vials, bottles, and jars. This plastic cap features a textured (matte) top and a ribbed side. The ribbed-sided design allows for ease of use when removing the lid. The 3-ply foam liner is compatible with many substances and is great for general lining applications.
Cap Liner Type:
F-217® .035” 3-Ply Co-extruded Foam Liner Composition
The F-217 liner is a three-ply co-extruded white liner consisting of a closed cell foam produced from low-density polyethylene (LDPE) faced with solid LDPE on both sides. The opaque white outer skins create a high-quality visual aesthetic. The inner foam core creates a compressible yet resilient product allowing it to create a good seal with the container. 3-ply foam liners have become the industry standard due to their all-purpose compatibility, resilient, compressible seal, cleanliness (no pulp dust) and economy. 3-ply liners are taste and odor resistant, and have a low moisture transmission rate, meaning they prevent moisture from entering the bottle and affecting products. (This liner does not create an airtight seal.)
|LDPE - Solid||-||-|
|LDPE - Foam||.035"||.889mm|
|LDPE - Solid||-||-|
is a tough plastic that has good chemical resistance. PP is translucent in its natural state but can have a glossy finish when produced with color. Some examples of common products made with PP are dairy and medication containers. Polypropylene is suitable for hot fill applications of up to 165°F and is therefore great for autoclaving. It is not recommended for cold or sub-freezing temperatures. The Cary Company has an assortment of polypropylene plastics available for purchase, such as plastic caps and jars, which have a higher tolerance for chemical products.
This information has been provided as a general guide. It is the customer's responsibility to select the proper container for product and application compatibility. The Cary Company does hereby disclaim any and all warranties, expressed or implied, including any implied warranty of merchantability or fitness for a particular purpose or use. We are not responsible for consequential damages arising from customer's selection and use of containers, container and label dimensions, and/or closures supplied by us.