A402 / A412

This robust tensioner is specially developed for round, curved or irregular packages. Its long tension handles permit very high strap tension (with a limited effort). The feed-wheel tensioning system allows unlimited strap take-up without any tension loss. The manual sealer is extremely safe unique and durable of unsurpassed quality. An integrated safety catch, guarantees a perfect double notch seal every time. The specially shaped sealing handle assures an accident free operation and the distance rubber roll on the lower handle places the handle into the correct position.

    Strap qualities
  • Uniflex up to 850 N/mm2
    Ultraflex up to 1100 N/mm2
    Strap dimensions
  • 19.0 - 32.0 x 0.50 - 1.00
    3/4" - 1 1/4 x .020 - .040"
  • A402: 4.0 kg / 8.8 lbs
    A412: 3.4 kg / 7.4 lbs
Unsurpassed Quality
Advanced Design
Extremely Durable


Model A402 is especially well suited for round pakkages with a very small supporting surface. Here too an unlimited take-up is possible and the double
notch joint is produced using the manual sealer A412.

Sealing tool A412 is used in combination with the manual flat or round tensioners A301/A402. The double notch joint is mounted in a single operation permitting only perfect notch joints thanks to the built-in safety pawl. The ideally curved levers prevent the handle from jamming, guaranteeing rational working with no risk of hand injury. The rubber spacer on the lower lever also permits sealing with both hands on the upper lever.

Advantages of tensioner model A402

  • Designed for round objects and for curved or irregularly shaped packages
  • The feed-wheel tensioning system allows unlimited strap take-up
  • Very tight strap tension without any tension loss
  • The long tension handle permits very high strap tension (with a limited effort)

Advantages of sealer model A412

  • The safe upcut double notch joint is accomplished in one stroke
  • The installed safety catch guarantees perfect seal joints only
  • The specially shaped sealing handle (bent) assures an accident free operation (a crushing of the hands is not possible)
  • The distance rubber roll on the lower handle places the handle into the correct position relative to the seal and allows the sealing action to be accomplished with both hands


The table below gives you all key factors of this very reliable and durable device that gives everyone who works with it a secure and familiar feeling.

Strapping QualitiesUniflex and Ultraflex max. 1100 N/mm2, 160'000 psi
Strapping Dimensionswidth 19.0 – 32.0 mm / thickness 0.63 – 1.00 mm
Weight4.0 kg / 8.8 lbs
SealsOverlap seals, see chart
Sealingwith separate manual sealer model A412


If you want to orient yourself further, we invite you to download one or more copies of the current product information here. You can of course also choose to ask your information request via the contact information form.

Datasheet A402/A412

Product datasheet

Steel to plastic conversion

In addition to the conventional systems for steel strapping, FROMM has developed equipment for polyester strapping. This new type of strapping is flexible, absorbing shock impact during shipping, loading and unloading more effectively than steel strapping. The range is divided in pneumatic, manual and electric tools. Electric tools allow an independent working range, ideal for applications requesting not only flexible handling of the tool but also high tension of the strap.

Plastic Strapping Tools


Please complete the contact request on the right so we can ensure that we can deliver all the information you are looking for quickly. You will be contacted by the appropriate FROMM office in your area.

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