A moisture-resistant sealant for demanding, long-life applications.
Polysulphide
Polysulphide is a two-component sealant valued for its resistance to moisture, chemicals and weathering over long service lifetimes.
It can be used for cure-in-place pipe repair, and is widely relied on as a secondary sealant for insulated glass units, where its low permeability to moisture and gas is particularly valued.

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Material Properties
Typical Viscosities
This can vary greatly, depending on whether it's a pour grade product or a machine only dispense grade.
Key Processing Notes
Moisture sensitive product - requires appropriately sealed handling and processing equipment.
Can be low or high viscosity, often requiring dedicated equipment to process correctly
2KM Machines for Polysulphide Processing
- Decanting System - Dedicated machine designed to apportion and dispense material from bulk packaging into retail ready bags or tins.
- PGM Range - Specific machine will depend on the viscosity of the selected material.
Supplier Compatibility
2KM systems are designed to work with materials from a wide range of manufacturers, giving customers flexibility rather than locking them into a single supplier ecosystem.
Industries Using Polysulphide
1. Utilities Companies - cure-in-place pipe repair.
2. Structural Glass - as a secondary sealant for insulated glass units, alongside silicone.
3. Aerospace - sealing applications, per the Aerospace industry page's own content brief.
4. Automotive - Seals & Gaskets.
Polysulphide - FAQs
What is 2-component polysulphide used for?
Polysulphide is used for cure-in-place pipe repair, chosen by many Utilities Companies. It's also widely used industry-wide as a sealant for insulated glass, automotive gaskets & seal, and aerospace sealing applications.
What 2KM machines are best suited to processing polysulphide?
The decanting system is perfect for low viscosity materials that are being re-packaged into retail ready kits.
The PGM range is more suited to metering, mixing and dispensing this material across the entire viscosity range.
Can the machines condition my material to ensure it is optimally processed?
Yes, Polysulphide is a moisture-sensitive product, so equipment needs to be appropriately sealed to protect the material during processing.
Which industries rely on Polysulphide dispensing?
Utilities, Automotive, Aerospace, Structural glass Manufacturing & General Industry for Sealing.
Does 2KM offer access to demonstration units to help validate a new material or process?
Yes - 2KM has a full test facility for process evaluation and proof of concept before purchase, plus lease and hire options for longer-term on-site testing before you commit.
Get In Touch
Discuss Your Polysulphide Application
Working with polysulphide sealants?
Call us today on +44 (0) 1527 834 720 or email us at sales@2km.co.uk
Or complete the form below and a member of our engineering team will be in touch to discuss your specific process requirements.
WHY CHOOSE 2KM
Passion for excellence
We are genuinely passionate about our machines, and it shows in everything we do - from initial consultation through to commissioning and ongoing support.
Tailored Solutions
We customise our machinery to meet your specific needs, taking the time to understand your business and deliver solutions that enhance your processes.
Proven Experience
With over 50 years of continuous research and development, we stay at the forefront of manufacturing innovation in metering and dispensing technology.
Built For Reliability
Our machines are engineered to perform. Supported by exceptional after-sales service from our Bromsgrove facility, ensuring longterm, dependable operation.
Deep Industry Knowledge
Our expertise spans extreme material behaviours and complex process requirements across wide range of industries - from wind energy to medical devices to subsea applications.
Dedicated Team
Our committed team is at the heart of our success. We design, build, and commission every machine from our UK facility in Bromsgrove, Worcestershire.














