THERMOSET & PHENOLIC CAPS - PAGE 54-57 These caps are known for providing the widest range of chemical compatibility and for being the most temperature tolerant of plastic closures. They also provide the most consistent adherence to close dimensional tolerances. They are ideal for pharmaceutical applications. Thermoset closures cannot be remelted after they are formed. Common resins include urea, phenolic, and melamine.
METAL CAPS - PAGE 59 Metal caps offer the widest range of temperature tolerance and are very resistant to fracture from impact. Metal caps are great for industrial and food applications. A metal closure is manufactured from either steel (coated with anticorrosive coating, either chrome plate or tinplate) or aluminum
POLYPROPYLENE CAPS - PAGE 54-57 Polypropylene caps are known for good impact strength, cost effectiveness and pliability. They can be remelted after they are formed. They are autoclavable and suitable for many dry products. Polypropylene closures with PE Foam liners have excellent sealing characteristics and offer good chemical resistance for a variety of commercial products
F217 & PTFE LINED CAPS These caps feature liners that resist attack from virtually all chemicals at room temperature. The F217 & PTFE liner system provides a tight seal with a low moisture transmission rate. Common Uses: Analytical lab samples, high purity chemicals,strong acids, solvents, environmental samples and pharmaceuticals. Available in Thermoset, Phenolic, and Polypropylene Caps
PULP/VINYL LINED CAPS Phenolic caps with a pulp/vinyl liners are perfect for general use. The liner is made of a vinyl coating applied to HDPE-coated paper and then laminated to pulpboard. Common Uses: Food and beverage, medical and chemical, mild acids, alkalis, solvents, alcohols, oils, and aqueous products Available in Phenolic and Polypropylene Cap
POLYCONE LINED CAPS Polycone caps form an exceptionally tight seal and offer a good chemical barrier. This liner molds itself around the sealing areas of the finish as the cap is screwed on, virtually eliminating leakage, evaporation, contamination binding, and backing off. Common Uses: Everything from liquids, to soaps, to macro-invertebrates Available in Phenolic Caps
RUBBER LINED CAPS Black phenolic caps with rubber liners are autoclavable. This liner is FDA approved and offers excellent properties of resilience, resistance to moisture vapor and relatively low gas transmission. Common Uses: Food, pharmaceutical applications, packaging injectables, and culture work Available in Phenolic Caps
PE FOAM LINED CAPS These polypropylene caps have excellent sealing
ALUMINUM FOIL LINED CAPS These caps are typically used for food applications as they will not cause odor or taste problems. They can also be used for non-acid and non-alkaline products. Common Uses: Organic solvents, chrome cleaners, brake fluids, and mineral oils Available in Phenolic and Metal Caps
characteristics and offer good chemical resistance. They are available in two styles - Sturdeeseal PE and F422 HDPE Foam. Common Uses: Acids, alcohols, alkalis, aqueous products, cosmetics, and household oils Available in Polypropylene Caps
UNLINED CAPS Unlined polypropylene closures are available in white or black. These caps are autoclavable and are suitable for many dry products. Available in Polypropylene Caps PLASTISOL CAPS Plastisol liners have a plastic gasket on the inside of a metal closure. This creates an airtight, vacuum seal that is tamper- evident with the container when properly heated and cooled. Caps with this lining system must be used in conjunction with containers that can withstand heat. Available in Metal Caps PULP/POLYETHYLENE CAPS These metal caps are great general purpose closures. They are ideal for powders, non-acidic food products and consumer products such as jar candles and honey. Available in Metal Caps .030” THICK SOLID POLYETHYLENE LINED CAPS Caps with solid PE liners offer good chemical resistance and a low moisture vapor transmission rate and are great for nail polish remover and higher concentration acids and alkalis. Good for non-oil products filled at room temperature. Because this lining system is paperless, your samples will not be contaminated with fiber or paper particles from the closure. Available in Phenolic Caps
CAPS & NECK FINISHES Screw thread cap sizes are expressed in two numbers, which refer to the cap diameter (in millimeters) and the GPI Finish (the top of the containers). For example, a size 28-430 cap has a diameter of 28mm, and fits containers with a 430 GPI thread finish.