Plastic lid for jar 70/400, white

This is a screw plastic cap for jars with a 70 mm thread, which seals the jar and protects the contents from dust and drying out. It is suitable for creams, body butters, balms, scrubs, masks or solid shampoos — that is, for products that are scooped from the jar with fingers or a spatula and require a wide neck.

The cap is made of polyolefin plastic (PE/PP), which is lightweight, unbreakable and resistant to common cosmetic raw materials. It is suitable for contact with cosmetic products and is also suitable for direct contact with food, so it can be used on jars containing homemade pastes, bath salts, dry blends or herbal ointments prepared in the kitchen.

Key properties

• Wide 70 mm thread – matches common cream and butter jars, making it easy to pair with jars of the same neck type from the Handymade range.
• Easy opening and closing – the screw cap opens with a single turn, which is practical for everyday use and when filling larger batches.
• Durable material – polyolefins withstand contact with oils, butters, emulsions and water-based gels without changing shape or colour.
• Suitable for cosmetics and food – one cap covers both homemade cosmetics production and the storage of food preparations.
• Low weight – does not add to parcel weight when shipping and makes handling easier during packaging.

Use and combination with a jar

The cap is used with jars that have the same neck type as stated in the product parameters. It is placed on the neck and tightened by hand. Forcing it tight is not necessary and is not advisable with a plastic thread, as it can deform the thread or cause the cap to be difficult to unscrew. The seal on creams and butters is ensured by correct seating, not by the force of tightening. Ready-made jar + cap combinations are available in the Handymade range as complete products.

Before first use, the cap is recommended to be washed with warm water and a mild detergent, or disinfected with isopropyl alcohol or ethanol and left to dry completely. Residual moisture under the cap could introduce water into anhydrous products (butters, balms) and shorten their stability. The same procedure applies for repeated use. The thread and inner surface of the cap should be checked for damage or build-up of dried product.

What is worth knowing

The plastic cap is intended for products filled cold or after cooling. Balms and butters that are poured into the jar while still warm should be allowed to set first, and only then should the jar be closed. Closing a warm jar leads to condensation of moisture on the inner surface of the cap and water droplets on the surface of the product.

The white cap is opaque, which is an advantage for light-sensitive products, although the main protection of the contents is determined by the material and colour of the jar itself. The white colour appears neutral and combines well with both clear and coloured jars. The cap can be labelled on the top surface, which is practical for marking the product name or batch on jars stored in multiple layers.

Frequently asked questions