Semi-Automatic Wire Seal Insertion Machine for Waterproof Harnesses, 0.6–3.0 mm Seal Bore WM-3221

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The WM-3221 is a single-purpose seal station: it fits waterproof rubber seals onto wire ends and does nothing else, so shops that already own crimping presses can add the seal step without buying another crimper. It handles seals up to 9 × 10 mm with a 0.6–3.0 mm bore on wire of 1–3.5 mm outer diameter, pushing the seal up to 10 mm along the wire to within ±0.3 mm. The rotary drum feeds and orients the seals; the operator only presents the wire, at up to 50 insertions per minute of machine cycle.

Specifications

Key features

• One job only — seal insertion, so it drops in beside the crimping presses you already run instead of replacing them
• Rotary perforated drum feeds and orients bulk seals automatically; the transparent baffle lets the operator see the seal level and top it up without stopping to open a hopper
• Foot pedal for hand-paced work or timed repeat for steady batch running — the same machine suits a prototype bench and a production cell
• Seal tracks and insertion modules swap out by hand, so a change of seal size is a tooling change rather than a rebuild
• ±0.3 mm insertion accuracy keeps the seal at the same distance from the wire end across a batch, which is what makes the downstream crimp repeatable
• Free sample test — send your wire and seals, we run them on this machine and send you the video plus the sample leads before you order

What it processes

• Automotive waterproof connector leads — engine bay, lighting and sensor harnesses built on single-wire rubber seals
• Harness shops that already crimp in-house and only need the seal step mechanised
• Prototype and low-volume sealed leads where a fully automatic seal-and-crimp line cannot be justified
• Repair, service and after-market harness work where seals are fitted onto pre-made leads

Suited for: adding a mechanised seal station to a harness shop that already crimps — single wires of 1–3.5 mm outer diameter, rubber seals up to 9 × 10 mm with a 0.6–3.0 mm bore. If your seals are larger than 9 × 10 mm, the same job is done by the WM-3231 large rubber seal insertion machine, which takes seals up to 13 × 14 mm at 60 cycles per minute on a 36 kg bench frame. If the seal has to be fitted and crimped at one station, the WM-3222 strip, seal and crimp machine adds stripping and a 2 T press on a single-position bench, at 1,200–1,500 pieces per hour.

Not suited for: jobs that need the seal fitted and the terminal crimped in one pass — that is the WM-3140FS double wire seal insertion and crimping machine, which runs 0.2–2.5 mm² wire with seals up to φ 10 × 10 and a 3 T press at 1,000–1,200 pcs/h. For a fully automatic line that cuts, strips, seals and crimps both ends unattended, pick the WM-377 double-end wire seal insertion and crimping machine at 3,000 pcs/h for AWG 28–16.

The published data sheet gives no machine dimensions or weight, and no air-pressure figure — the machine carries an onboard filter-regulator unit, so tell us your shop air supply in the inquiry and we will confirm both the footprint and the air requirement in writing before you commit.