These PVC sleeves, currently found on the NALGENE® Sterile PETG
Media bottles, 2019-series, are designed for users who need to secure
their bottle contents with a tamper-resistant seal.
After capping the NALGENE® bottle, simply slide the heat-shrink sleeve
over the cap and bottle neck, then heat the plastic sleeve (heat tunnel
or hot air gun) until it securely seals the closure and neck of the
bottle. |