Rich color and clean lines, Henkel's Loctite 55 thread sealing cord in everyday use

Henkel's Loctite 55 thread sealing cord aims to replace classic hemp and paste when sealing metal and plastic pipe threads. What the white-and-red roll delivers in daily plumbing jobs, where it shines and where it annoys, is more nuanced than it looks.

Reviewed: ad hoc news Accessory & Components desk. Edited and checked on 2026-06-17, 21:37. Details in the imprint.

Loctite 55 from Henkel is one of those small rolls that can decide whether a bathroom stays dry or slowly fills the drip bucket under the sink. The thread sealing cord promises reliable tightness without mess, even when fittings need a last-minute adjustment.

What Loctite 55 is made for

Loctite 55 is a non-hardening thread sealing cord for metal and plastic pipe fittings, sold in a compact plastic dispenser that fits easily in one hand. According to Henkel, it is approved for gas and potable water and replaces traditional PTFE tape or hemp with paste. Henkel's official product page

The application feels straightforward for anyone used to wrapping threads. You pull the white fiber from the red dispenser, press it into the thread, and wind it around several times with decent tension. The cord stays slightly soft, so fittings can still be backed off and re-aligned without instantly losing tightness.

How it behaves in daily use

On the job, installers like that Loctite 55 does not smear like paste and does not shred as easily as cheap PTFE tape when fittings bite. The cord gives a tactile resistance while tightening, so you feel when the thread settles and the seal compresses.

Another practical detail is the integrated cutter on the dispenser, which lets you snap the cord to length with one thumb instead of searching for a knife. That saves seconds on each joint and keeps both hands close to the workpiece, especially in tight shafts or behind wall-mounted toilets.

Strengths against hemp and PTFE tape

Compared with hemp and sealing paste, Loctite 55 stays cleaner in the toolbox and on the floor. There are no oily fingerprints on tiles, and the typical paste smell in small bathrooms is gone, which customers notice immediately during renovation jobs.

The system also tolerates repositioning better than many PTFE tapes. You can loosen a fitting by up to a quarter turn to align a mixer tap or radiator valve without starting again from scratch, which Henkel emphasizes in its technical documentation. The technical data sheet describes this adjustment capability

Where Loctite 55 can annoy

Not everything is perfect. The cord requires a small learning curve, because the number of wraps depends on fitting size and thread quality. Too few turns and the joint may ooze, too many and the fitting can feel spongy while tightening.

Some users also complain that the plastic dispenser opens in the bag if the lid is not snapped shut cleanly. Then the cord spills out like white spaghetti, and the installer has to rewind it with cold fingers in the basement or scrap the messy roll entirely.

Price point and availability

Loctite 55 is positioned as a professional product and usually costs more than simple PTFE tape, but one roll lasts for many joints because the cord is relatively thick. In European online shops and trade wholesalers, rolls with 50 m and 160 m lengths are common, giving craftspeople a choice between compact and bulk use.

In Germany, the thread sealing cord is distributed via plumbing wholesalers and specialized building-material retailers, but it also appears in some consumer DIY chains. For occasional home use, one small roll is usually enough to handle several bathroom or kitchen upgrades over a few years, as long as the lid stays securely closed.

Why Henkel cares about such details

For Henkel, Loctite 55 may be a small accessory in the catalog, but it fits neatly into the strategy of offering system solutions for trades. Each reliable seal strengthens the Loctite brand perception with plumbers and heating engineers, who then often reach for other red-labeled products on the shelf. Henkel's annual report underlines the importance of the Adhesive Technologies division

Shares of Henkel AG & Co. KGaA (DE0006048432) trade in Frankfurt on Xetra, making the Düsseldorf-based group a regular feature in many European equity portfolios.

Key facts on Loctite 55

• Product: Loctite 55 thread sealing cord
• Manufacturer: Henkel AG & Co. KGaA
• Category: Accessory / plumbing component
• Launch: Marketed internationally for several years, widely established in professional plumbing
• RRP / Price: Typically mid-single-digit euro range per 50 m roll, higher for 160 m rolls depending on retailer
• Availability: Plumbing wholesalers, specialist building-material stores, and selected DIY chains in Germany and across Europe
• Target group: Professional plumbers and ambitious DIY users who value clean, adjustable sealing of threaded fittings
• Highlight / USP: Non-hardening cord that allows joint adjustment after tightening while keeping tools and surroundings tidy

This article was AI-assisted and editorially reviewed. Product information without guarantee; prices and availability may change at short notice. No investment advice, no buy or sell recommendation. Stock-market transactions involve risks up to total loss.