Seal the Deal (Literally): Why a Tight Packaging Seal Protects Your Product

The Power of a Proper Seal

The cannabis market demands airtight, tamper-evident packaging that doesn’t just look good—it performs. A tight seal does three critical things:

1. Preserves potency and flavour – Oxygen exposure breaks down cannabinoids and terpenes, leading to loss of aroma and effectiveness.Deliver precise, repeatable doses 

2. Prevents contamination – A sealed environment protects against external moisture, dust, and microbial intrusion.

3. Proves integrity – A visible tamper-evident feature builds consumer confidence and satisfies regulatory packaging requirements.

MedLock’s engineering team ensures every closure system—from jars to syringes—is precision-molded for airtight security without sacrificing usability.

The Click-Lock™ Closure: Where Seal Integrity Meets Compliance

At the core of MedLock’s sealing technology is the Click-Lock™ CR/TE closure—a two-in-one system that combines child resistance and tamper evidence in a single, twist-to-lock motion. Each Click-Lock™ cap features a gasketed inner valve that forms a leak-proof barrier between the closure and the container neck. The torque-stop mechanism ensures consistent pressure without over-tightening, while the frangible tamper band provides visible proof of seal integrity.

Seal-enhancing benefits:

• Leak-proof performance across liquid and oil-based formulations

• No need for secondary heat shrink or foil banding

• Consistent torque retention to prevent leakage during transport

• Fully compliant with CPSC, ISO 8317, and Health Canada ACMPR standards

This precision closure system ensures your packaging remains secure from filling line to final use—protecting both product and brand reputation.system simplifies compliance documentation while maintaining end-user functionality and safety.

PET Jars: Airtight Protection for Dried Flower and Concentrates

MedLock’s PET Jars are engineered to maintain airtight performance under variable temperature and humidity conditions. Each jar ships standard with a 52 mm Click-Lock™ cap, integrating both child resistance and tamper evidence.

Sealing advantages: 

• Food-safe, moisture-inert PET construction preserves freshness and texture

• Optional foil liners enhance moisture and oxygen barrier performance 

• Foam inserts cushion fragile concentrates for structural protection

• Shatter-resistant design ensures product safety in transit

The combination of rigid PET and gasketed sealing creates a barrier that keeps terpenes stable and reduces the risk of mould growth or dryness—critical for compliance and consumer satisfaction.

Extract Bottles: Leak-Proof Confidence for Liquids and Oils

Why seal integrity matters for extracts:

• Prevents oil leakage during transport or temperature shifts

• Stops oxygen ingress that can degrade active compounds

• Maintains potency, colour, and viscosity

• Enables accurate dosing with ClickDose™ compatibility

Each bottle’s ergonomic design allows smooth pouring and controlled pressure, ensuring no air pockets or drips disrupt your production line or end-user experience.

 

Pouches and Tubes: Flexible Packaging, Rigid Protection

MedLock’s child-resistant Mylar Pouches and Polypropylene Pop-Top Tubes deliver airtight sealing for flexible formats. The grip-and-rip pouch design includes a resealable zipper that locks in freshness after first opening, while pop-top tubes feature a built-in hinge that forms a pressure-tight seal when closed.

For producers handling multiple formulations, standardised neck finishes and compatible accessories mean fewer SKUs to manage—and faster changeovers between product runs.

Seal features:

• Multilayer PET/VMPET/PE barrier films block oxygen, light, and moisture

• Child-resistant “squeeze-to-open” closures prevent accidental access

• Optional OdorMizer™ inserts neutralize aroma without breaking the barrier

• Available in EcoPure® biodegradable formats for sustainable compliance  

These designs balance performance and flexibility—offering LPs an airtight solution for edibles, flower, or sample formats without compromising brand presentation.

Tamper Evidence: The Seal That Builds Trust

A secure seal is only as effective as the proof that comes with it. MedLock integrates tamper-evident features across all packaging categories to give both consumers and regulators visible confirmation of product integrity.

• Frangible tamper bands on caps clearly break upon first opening.

• Tear notches on Mylar pouches confirm if packaging has been accessed.

• Pressure-sensitive liners offer secondary barriers for additional verification.
  

Each feature is independently tested under regulatory protocols, ensuring your packaging delivers not only a physical seal but a visible promise of safety.

Sustainability and Performance United

MedLock’s airtight seals are available on packaging made from recyclable PET and PP or EcoPure® biodegradable resins, all certified under ASTM D5511 and DIN

EN13432. This means LPs can maintain airtight protection and compliance while reducing environmental impact.

The materials resist degradation during use but decompose safely under industrial composting conditions—an ideal balance between product protection and ecological responsibility.

Seal Integrity Equals Brand Integrity

A reliable seal is more than a mechanical feature—it’s a mark of trust. It proves your product is pure, your process is controlled, and your brand is built on precision. MedLock’s sealing technology integrates CR/TE compliance, user safety, and environmental performance into every container it produces.

When you choose MedLock, you’re not just sealing your product—you’re sealing your promise.

Request sealed packaging samples or compliance data at www.med-lock.com