When everyday ziplock bags are not tough enough, step up to heavy duty zip lock bags. Made from thicker 75 micron film (and available as bottom-loading Maxigrip), they resist punctures and splits far better than standard 50 micron bags — built for sharp, heavy or high-value contents.
When to choose heavy duty
Reach for 75 micron and Maxigrip bags for nuts and bolts, metal parts, tools, samples with sharp edges, or anything you will handle and reseal repeatedly. The thicker wall holds its shape and keeps the seal working for longer.
Shop heavy duty resealable bags
75 x 100mm — 75µm
90 x 150mm — 75µm
150 x 205mm — 75µm
205 x 305mm — 75µm
230 x 330mm — 75µm
380 x 510mm — 75µm
Maxigrip 150 x 255mm
Maxigrip 205 x 305mm
Standard or write-on options
Only need everyday strength? Our standard 50 micron press seal bags cover most jobs. Need to label a tough bag? See 100 micron write-on panel bags. Buying volume? Read about wholesale quantities.