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Stack of 100 kraft self-seal bubble mailers

Partners Brand

Partners Brand B857SS Self-Seal Bubble Mailers No 4 Kraft PK100

SKU CH-KV4P-QP447

Self-sealing bubble mailers protect contents with padded cushioning and a secure peel-and-seal closure, supplied in a pack of 100 Kraft envelopes

  • Product colorKraft
  • Self-seal closure speeds packing
  • Bubble lining cushions contents during transit
  • Kraft exterior resists tears and moisture
  • 100 mailers per pack supports volume shipping
  • No 4 size fits documents and small items

Self-Seal Bubble Mailers No 4

Partners Brand B857SS mailers come in a kraft finish and are sold as a pack of one hundred units. They are designed for shippers who need a lightweight protective envelope that closes without tape or a heat sealer. The self-seal adhesive strip speeds up packing lines and reduces consumable waste. Small retailers and home-based sellers will find the quantity practical for daily order fulfilment.

Lightweight protection and quiet sealing

Each mailer uses an internal bubble layer that cushions contents while keeping the overall package light for postage savings. The kraft outer surface resists tearing during normal handling and accepts handwritten or printed labels cleanly. Sealing requires only firm pressure on the adhesive flap, producing no noise from tape guns or staplers. Power draw and thermals are not applicable to this non-electrical product.

Consistent performance across high-volume runs

The adhesive maintains its tack across the full one hundred count, so the last mailer seals as reliably as the first. Bubble integrity holds up during extended sorting and transit cycles without collapsing under stack weight. Users who need larger dimensions or heavier-duty laminates will need a different size class. The pack quantity suits steady daily shipping rather than occasional single-use needs.

How it compares

Measured against everything we stock in Packing Materials & Shipping Labels, at today’s prices. Recalculated every night.

Price $75.99
Pricier than about 60% of the 3,067 comparable items (median $52.99).

Specifications

Product
Brand namePARTNERS BRAND
Product colorKraft

Questions about this item

How do I seal the self-adhesive flap on these 9 1/2 x 14 1/2 mailers without trapping air bubbles?

Peel the protective strip, press the flap down from the centre outward using firm finger pressure, then run a roller or flat hand across the seal to remove any trapped air before shipping.

What part of the Kraft bubble mailer wears out first if I store the pack of 100 in a humid warehouse?

The self-seal adhesive loses tack when exposed to prolonged moisture; keep the box sealed in its original wrap and store it in a climate-controlled area until needed.

At what fill level does the 14 1/2-inch depth become the limiting factor for bulky items?

The mailer holds its shape up to roughly three-quarters of the 14 1/2-inch depth; beyond that the bubble lining compresses and the self-seal may not close securely.

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