KLEIBERIT 501.6 1C PUR Adhesive D4 – long open time

What is KLEIBERIT 501.6 1K-PUR-Adhesive D4?

KLEIBERIT 501.6 is a one-component polyurethane adhesive for high-strength and moisture-resistant D4 bonds. Its particularly long open time of approximately 70 minutes makes this PUR adhesive the ideal choice for large-area, complex, or time-consuming bonding applications.

The adhesive is suitable for wood and wood-based materials as well as mineral building boards, ceramics, concrete, and rigid foam. Its one-component nature means no additional hardener is required.

The variants are organized by container size and quantity. This allows for direct selection of single containers, sensible tiered quantities, and complete packaging units.

Areas of Application

• Window and door construction
• Stair, furniture, and interior finishing
• Large-area layer bonding
• Complex assembly and construction bonding
• Bonding of wood and wood-based materials
• Bonding of mineral building boards
• Connections with ceramics, concrete, and rigid foam
• Applications requiring a long processing time

Properties & Advantages

• Particularly long open time of approximately 70 minutes
• One-component and ready to use without hardener
• Meets stress group D4 according to DIN EN 204
• No pot life issues due to 1K processing
• Suitable for large-area and complex bonding
• High moisture and weather resistance of the cured bond
• Can be used for wood, wood-based materials, and numerous mineral materials
• Container and quantity variants clearly summarized in one parent article

Technical Data

• Product: KLEIBERIT 501.6
• Product Type: One-component PUR adhesive
• Base: 1K-Polyurethane
• Color: Brown
• Stress Group: D4 according to DIN EN 204
• Open Time: Approx. 70 minutes
• Consumption: Approx. 100–200 g/m², depending on substrate and application
• Curing: By reaction with moisture
• Container Variants: 0.5 kg bottle and other available bulk containers according to product overview
• PU of 0.5 kg bottle: 12 bottles per carton

Variants, SKUs & EAN Codes

The following overview facilitates selection, reordering, inventory management, and assignment to the respective KLEIBERIT manufacturer item numbers.

Application Instructions

• The surfaces to be bonded must be clean, stable, dust-free, and free of grease, oil, and other release agents.
• At least one of the two parts to be joined should be sufficiently absorbent or moisture-permeable.
• For very dry materials, light moistening can support the reaction of the PUR adhesive.
• Apply the adhesive evenly and sparingly to one of the surfaces to be joined.
• Assemble the components within the long open time and press sufficiently or fix securely.
• Due to the moisture-dependent reaction, the adhesive may foam slightly during curing.
• Remove excess adhesive, if possible, before complete curing according to the manufacturer's instructions.
• Before serial applications or with sensitive materials, carry out a test bond.
• Observe the technical data sheet, safety data sheet, and processing instructions on the container.

When is the long open time an advantage?

The long open time of approximately 70 minutes is particularly helpful when large areas need to be coated, several components need to be aligned, or complex constructions need to be progressively assembled.

Compared to faster PUR adhesives, there is significantly more time for application, positioning, and correction. This makes KLEIBERIT 501.6 particularly suitable for demanding custom fabrications and complex assembly processes.

Difference from KLEIBERIT 501.0 and 501.8

• KLEIBERIT 501.0: Universal version with a medium open time of approximately 20–25 minutes
• KLEIBERIT 501.6: Particularly long open time of approximately 70 minutes
• KLEIBERIT 501.8: Short open time for fast assembly and production processes

The three products are managed as separate parent articles due to their different processing properties.

Matching Accessories & Other KLEIBERIT Products

Further PUR adhesives, PVAC wood adhesives, mounting foams, and special adhesives can be found in our KLEIBERIT collection. For product selection, the material, open time, moisture exposure, and desired processing speed are particularly crucial.

Frequently Asked Questions

When is KLEIBERIT 501.6 the right choice?

The PUR adhesive is particularly suitable for large, complex, or time-consuming bonding applications where significantly more time is needed for application, alignment, and fixation.

Is KLEIBERIT 501.6 transparent?

No. According to the manufacturer, the adhesive is brown.

Is KLEIBERIT 501.6 ready to use?

Yes. It is a one-component PUR adhesive that is processed without additional hardener.

Which materials is KLEIBERIT 501.6 suitable for?

The adhesive is suitable for wood, wood-based materials, mineral building boards, ceramics, concrete, and rigid foam, among others.

Do the components need to be fixed during curing?

Yes. The workpieces must be held together with sufficient pressing pressure or otherwise securely fixed during curing.

Does KLEIBERIT 501.6 foam?

The adhesive reacts with moisture and can foam slightly. Sufficient pressing pressure reduces foaming in the bond line.

What quantity tiers are available for the 0.5 kg bottle?

The 0.5 kg bottle is available as a single item, in a pack of 6 bottles, and as a complete packaging unit of 12 bottles.

Where can I find safety and manufacturer information?

Processing, hazard, and safety information can be found on the product container, the technical data sheet, and the manufacturer's safety data sheet. The structured manufacturer information is also maintained with the product.

Manufacturer:
KLEIBERIT SE & Co. KG
Max-Becker-Str. 4
76356 Weingarten
Germany

Brand Notice:
Original KLEIBERIT brand product. Sold via Bauwolke24.