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FEFCO 0950

U-Shaped Corrugated Shock Absorber

  • Available in a wide range of custom configurations & material selection.
  • Order 1 sample. Or order 100K+ units. Or anything in between.
  • Affordable delivery across North America.
  • Design support, warehousing, testing, assembly available.
  • Widest machinery capability in America via 30+ specialist partner plants.
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Product details

Top highlights

  • Replaces EPS foam with fully fiber-based corrugated board
  • Provides extreme lateral shock absorption for heavy components
  • Requires two-handed manual folding and relies on the outer box to hold its shape

About this product

The U-shaped corrugated shock absorber is a heavy-duty internal cushion designed to replace EPS foam. By folding the outer edges into dense, multi-layered zig-zag blocks, it creates massive lateral crumple zones while providing a flat central resting base for heavy or fragile goods.

Because it relies entirely on straight parallel creases, this pad can be produced using straight-line scoring equipment. That production advantage is traded for higher manual assembly labor, as the thick corrugated layers must be folded by hand and held under tension until inserted into the master carton.

Common uses

  • Replacing non-fiber-based foam end-caps for electronics
  • Buffering heavy industrial machinery parts inside master cartons
  • Reinforcing the vertical walls of an outer shipping box

Get a quote

Share what you know. We'll take it from there. Or email us at info@herculeindustrial.com

Best Price Guarantee

Already have a packaging quote? Let us beat it.

Send us the quote you have. We will beat it for the same specifications, quantity, and delivery requirements.

Upload a competing quote

Free quote review. No obligation.

30+specialist partner plants

We supply through the plant best suited to your price, material, production, and delivery requirements.

Why we can beat a lower quote

30+ plants give us more ways to lower the price.

Each plant has different machinery, material costs, order minimums, and freight rates. Our buying volume helps us secure better pricing. We then quote through the plant that gives you the lowest total price for your requirements.

Send us your current quote. Watch us beat it.

Attach it to the quote form or email it to us. We'll review it free and send you our price.

Upload a competing quoteinfo@herculeindustrial.com
Best Price Guarantee terms

To qualify, send a written supplier quote dated within the past 30 days and addressed to your company. It must cover the same dimensions, construction, material, print, finish, quantity, tooling, freight, delivery date, and delivery location. The guarantee does not cover taxes, expired quotes, liquidation or clearance sales, or obvious pricing errors.

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Heavy-Duty Protection and Foam Replacement

EPS foam replacement

Replaces non-fiber-based foam end-caps or side-buffers. The dense zig-zag folds absorb severe lateral impacts, making it highly effective for protecting fragile mechanical parts that require tight tolerances within the main box.

Heavy component staging

The flat central base distributes the weight of heavy electronics or machinery parts. At the same time, the thick side blocks reinforce the outer carton's walls against crushing during transit.

Lateral void fill for mixed-carrier transit

Fills large gaps between a heavy product and the master carton. The multi-layered accordion structure prevents dense items from shifting and punching through the outer box walls.

Master carton wall reinforcement

Acts as a structural column when oriented vertically. The dense folded blocks add significant stacking strength to the corners or sides of the primary shipping box.

Industrial, Electronics, and Furniture Fulfillment

Industrial and machinery parts

Operations shipping heavy metal components often need extreme edge protection but cannot justify custom foam molds for low-volume or variable-size parts. This pad provides that protection using standard corrugated board.

Furniture and large electronics

Brands shipping large, heavy items through mixed-carrier networks require reliable side buffering. The multi-layered walls act as a structural crumple zone that prevents the product from taking direct hits.

High-weight e-commerce fulfillment

Direct-to-consumer brands shipping dense goods need fully fiber-based packaging that still handles individual parcel delivery. This insert replaces foam while maintaining the necessary impact resistance.

When to Consider Simpler Spacers or Tubes

High-speed automated packing

The unfastened zig-zag layers spring back and require manual tension to hold together. If your line relies on robotics or high-speed case erectors, consider pre-glued inserts or molded pulp instead.

Lightweight products

If the product does not need massive shock absorption, the manual folding effort of this pad is wasted. A simple C-channel spacer is much faster to pack and uses significantly less material.

Close variants and lookalike dielines

The closest library neighbors include 0949, 0976, 0941. Use this as a variant check if a buyer brings an old code, sample, or dieline that looks close. The deciding details are usually the lock, slot, closure, wall build, part count, or fold sequence.

Board Thickness, Assembly Labor, and Fit

Board grade versus folding fatigue

Thicker board increases shock absorption but exponentially increases the physical effort required to fold the pad 180 degrees. You have to balance the protection your product needs with the endurance of your packing team.

Master carton clearance

The pad relies on the exact internal dimensions of the outer box to stay tightly closed. The fit must be precise so the zig-zag layers do not unfold or shift during transit.

Packing bench setup

Operators will need to fold the pad and push it into the box before loading the product, or use a physical fixture to hold the tension. Plan your packing sequence around this requirement.

Inbound freight and storage density

The accordion folds require a massive flat board area. This means fewer pads fit on a pallet compared to simpler inserts, which is an important factor for inbound freight planning and warehouse storage.

Adjusting the Cushion Depth and Base Width

Cushion wall thickness

The number of zig-zag layers can be increased for deeper crumple zones. Keep in mind that adding layers requires a significantly larger flat blank, which affects how many pads fit on an inbound pallet.

Base staging area

The central flat panel can be widened or narrowed to match the exact footprint of the product being protected, ensuring the weight is distributed evenly across the floor of the master carton.

Flute direction alignment

The direction of the corrugated flutes can be specified to run vertically along the folded legs, turning the side blocks into load-bearing columns that reinforce the outer box.

Board and packing details

Straight-line production

Because all creases run parallel from end to end, this pad can often be manufactured using straight-line scoring. This bypasses the need for shaped cutouts, making it highly efficient to produce even in smaller runs.

Friction-fit retention

This insert does not use glue or locking tabs. It relies entirely on the physical boundary of the master carton to hold the zig-zag folds tightly closed against the board's natural spring-back.

Fold Allowance Modifications

Inner clearance modifications

Minor parametric changes to the inner fold clearances ensure that heavier board grades can nest properly without the layers binding or bowing under tension.

Additional notes

Managing operator fatigue

Repeatedly folding heavy corrugated board 180 degrees is physically demanding. If your volume is high, we recommend testing a physical sample with your packing team to ensure the labor burden is acceptable.

Related Internal Buffers and Pads

0929: C-Channel Spacer

Consider this lightweight standoff if the product only needs to be kept away from the box wall, rather than requiring heavy shock absorption.

0949: Cushion Pad

Nearby FEFCO style to review if the buyer wants a similar job but the closure, flap overlap, wall build, or part count changes the package choice.

0976: Corner Protector

Nearby FEFCO style to review if the buyer wants a similar job but the closure, flap overlap, wall build, or part count changes the package choice.

FAQs

Closure and assembly

Does this pad stay folded on its own?

No. It relies entirely on the physical boundary of the master shipping box to hold the zig-zag layers tightly closed against the board's natural spring-back.

Material and protection

Can we use double-wall corrugated for maximum protection?

Yes, but it requires careful testing. Double-wall board provides massive crush resistance but makes the 180-degree manual folds physically exhausting for packing operators.

Production

Does this pad require shaped cutouts?

Usually no. If the pad uses standard straight creases without custom cutouts or locks, it can be produced using straight-line scoring.

Packing route

How is the product loaded into this pad?

Typically, the operator folds the pad, pushes it down into the empty master carton so the box walls hold it shut, and then lowers the product onto the flat central base.

Can this be used on an automated packing line?

It is a poor fit for standard automation. The unfastened layers will spring open during robotic transfer unless you use specialized grippers designed to hold the tension.

Material and protection

How does board thickness affect the packing process?

Thicker board increases the shock absorption of the zig-zag layers, but it also exponentially increases the physical effort required to fold the pad by hand.

Shipping and route

Can this pad act as a standalone shipping box?

No. This is strictly an internal fitment. It requires a sealed master carton to hold its shape and protect the product from external elements.

First conversation

What product information is needed to size this insert?

The exact internal dimensions of your master carton, the weight and footprint of the product, and the clearance required between the product and the box wall.