Lamella Impact Packer 14mm

Plastic lamella drive-in injection packer (14 × 100 mm) for crack injection in concrete and masonry. Driven into a pre-drilled 14 mm hole with a hammer — the flexible plastic lamellae compress and grip the borehole wall, providing a pressure-tight seal without mechanical tightening. Available with or without integrated non-return check valve.

Key Features

Drive-in installation — hammered into pre-drilled hole, no spanner required
Flexible plastic lamellae grip the borehole wall on insertion
Available with integrated non-return check valve or without (open type)
Pressure-tight seal achieved by lamella compression — no mechanical tightening
Fast installation — significantly quicker than mechanical packers
Lightweight, single-piece plastic body — no metal parts to corrode
European market standard, M-thread compatible nipple

Technical Specifications

Material	Engineering plastic with flexible barbed lamellae
Type	Drive-In (Impact) Injection Packer
Variants	With non-return check valve / Without non-return check valve
Length	100 mm
Diameter	14 mm
Recommended Drill Bit	14 mm SDS
Compatible Resins	Polyurethane, Epoxy, Acrylic gel, Silicone emulsion
Installation Tool	Hammer or rubber mallet (with impact aid)
Standard	European market (DIN/EN)

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Product Description

The Lamella Impact Packer 14mm is a one-piece plastic injection packer that is driven into a pre-drilled 14 mm hole with a hammer rather than tightened with a spanner. A series of flexible barbed lamellae run along the body of the packer; when the packer is driven into the drill hole, these lamellae compress against the borehole wall and grip the substrate, creating a pressure-tight seal in a single installation step.

It is the fastest packer to install in this family — there are no threaded body parts to tighten, no separate adhesive to cure, and no waiting time before injection can begin.

The 14 mm size is the general-purpose workhorse of the lamella packer range, suited to standard concrete and masonry crack-injection work. For larger drill diameters and veil/curtain injection through gel pipes, see the Lamella Impact Packer 18mm.

The packer is available in two variants:

With integrated non-return check valve — the valve closes automatically when the injection gun is disconnected, preventing resin and substrate water from flowing back out. Used for wet substrates, active leak sealing, and where multiple packers are injected sequentially along a crack.
Without check valve (open type) — used with an external check valve on the injection gun side, typically the more economical choice for dry-substrate crack injection.

Characteristics and Advantages

Hammered installation, not threaded — a single hammer strike (with an impact aid driving the packer in flush) is all that is required to set the packer. There is no mechanical tightening step.
Self-sealing lamellae — the flexible barbs deform against the borehole wall on the way in, then spring outward to lock the packer in place and provide a continuous pressure seal along the contact length.
Two variants for two use cases — the check-valve version is the right tool for wet conditions and active leaks; the open version is more economical for dry-substrate work where the gun-side valve is sufficient.
No metal parts to corrode — the all-plastic construction is immune to corrosion, making this packer the preferred choice in chemically aggressive environments (sewage tanks, chloride-rich coastal structures, fertiliser silos).
Lightweight — easier on the operator over a long shift than equivalent steel mechanical packers.

Application Instructions

Mark the injection points along the crack at the spacing recommended by the resin manufacturer (typically 100–250 mm depending on crack width and substrate thickness).
Drill 14 mm holes at a 30–45° angle across the crack, to a depth of at least 80 mm (i.e., most of the packer length sits inside the substrate).
Vacuum or blow out the drill holes with compressed air to remove all dust. A clean borehole is essential for the lamellae to grip the substrate.
Insert the packer by hand up to the first lamella.
Drive the packer home with an impact aid (a soft-faced punch that fits the packer head) and a hammer. The packer should sit flush with the substrate surface.
Connect the injection gun or pump to the packer’s nipple thread. If you are using the open variant, ensure the gun-side check valve is fitted.
Inject the resin at the pressure specified by the resin manufacturer until you see resin returning from the adjacent packer.
Disconnect the gun — on the check-valve variant, the valve closes automatically and traps the resin inside. On the open variant, close the gun-side valve.
Allow the resin to cure as specified on the resin data sheet.
Cut the packer flush with a knife or grinder once curing is complete. The empty drill hole is then patched with mortar or epoxy filler.

Applications

High-volume crack injection — Production work where the time saved per packer adds up to a significant labour cost reduction
Concrete crack repair — Walls, slabs, beams, columns, and foundations
Active leak sealing — Use the check-valve variant in wet basements, sumps, and tunnels
Sewage and water-treatment tanks — The all-plastic construction resists corrosion in chemically aggressive environments
Coastal and marine structures — No metal parts to corrode in chloride-rich environments
Horizontal damp-proof course (DPC) — Inject hydrophobic silicone or acrylic creams into a bed course