38-400 Smooth Child-Resistant Concentrate Jar Lids – Foil Liner

Designed for standard 38-400 neck finishes, these smooth child-resistant lids are built for cannabis concentrate packaging workflows. Push-down & turn mechanism. Foil liner included. Available in matte black or matte white. Sold by the case.

Compatible with Goodlook® Classic and other 38-400 concentrate jars

Why This Closure Exists

The 38-400 format is the industry-standard closure for 7ml, 8ml, and 9ml concentrate jars. These smooth 38mm child-resistant lids are designed to match that footprint precisely — ensuring consistent sealing, reliable torque, and compatibility with production-scale filling operations. Built for concentrate packaging systems that require a larger diameter closure.

Push-Down & Turn Child-Resistant Mechanism

These 38-400 lids use the same standard push-down-and-turn child-resistant mechanism widely adopted in concentrate packaging systems. The dual-action motion requires downward pressure while turning, reducing unintended access while remaining practical for adult consumers. This 38mm child-resistant closure falls under the Multiple Use "Lifetime CRP" category, meaning it maintains its child-resistance capabilities throughout the life of the products use. (When used correctly)

Compatibility Built for 38-400 Neck Finishes

These closures are designed to fit standard 38-400 neck finishes, including the Goodlook® Classic (8ml / 7ml and 9ml-compatible) and other concentrate jars using the same thread pattern. Compatibility and torque performance should be verified within your full packaging system prior to production.

Foil Liner for Seal & Non-Stick Performance

Each 38mm lid includes a foil liner that supports a dependable seal and helps preserve product freshness. The liner improves non-stick performance for concentrates such as rosin, live resin, diamonds, and wax, helping reduce material adhesion inside the cap and minimizing product waste.

Smooth Matte Finish (Great for Branding)

These lids feature a smooth matte surface without molded instructions or textured ridges. The clean finish provides a premium aesthetic while offering a better surface for lid-top labels and tamper-evident seals. This makes the closure well-suited for brands that require consistent labeling and retail presentation. We understand, customization is key to standing out in the competitive cannabis market, which is why we provide dieline templates and labeling guides to make branding these closures as seamless as possible.