Guardian Sealing Systems
Advanced sealing and corrosion prevention for critical joints, connections, and interfaces — eliminating moisture ingress at the most vulnerable points in your asset.
Protecting Where Coatings Cannot Reach
Corrosion at connections, flanges, and mechanical joints is a recognised integrity risk in industrial and offshore systems — particularly where conventional coatings leave gaps at interfaces and crevices. Guardian Sealing Systems are specifically designed to eliminate moisture and contaminant ingress at these high-risk points.
JST Group supplies and applies Guardian Sealing systems as part of comprehensive corrosion protection programs — integrating sealing with coating, cathodic protection, and corrosion monitoring to deliver complete asset protection.
Why Sealing Systems?
Corrosion doesn't stop at the edge of a coating — sealing systems protect the critical gaps and interfaces that coatings alone cannot address.
Prevents Moisture Ingress
Seals critical connection points and interfaces against moisture, oxygen, and contaminants — eliminating the primary drivers of crevice corrosion.
Supports Corrosion Prevention Strategies
Works as part of an integrated corrosion protection program — sealing gaps that conventional coatings cannot reach.
Easy Application
Designed for field application on critical assets — including bolted joints, flanges, and mechanical connections — without specialist equipment.
Chemical & Environmental Resistance
Resistant to industrial chemicals, seawater, and aggressive atmospheric conditions common in oil & gas and marine environments.
Where Sealing Systems Are Applied
Flange Sealing
Sealing of bolted flanges and pipe connections against moisture and contaminant ingress into the flange face gap.
Mechanical Joints
Protection of threaded connections, couplings, and mechanical interfaces susceptible to crevice corrosion.
High-Risk Connection Points
Critical points in process systems where corrosion at connections poses safety or integrity risks.
Structural Interfaces
Sealing of steel-to-steel and steel-to-concrete interfaces where moisture trapping drives accelerated corrosion.
How We Deliver It
Integrated sealing services — from product selection through to professional field application as part of a complete corrosion protection program.
Product Selection
Assessment of joint type, operating conditions, and environment to select the correct sealing system and application method.
Professional Application
Application by trained technicians — ensuring correct coverage of the full joint interface and sealing of gaps and crevices.
Integration
Sealing systems integrated with broader corrosion protection programs — including coating, cathodic protection, and monitoring.
Documentation
Full application records, photographic documentation, and inspection sign-off for each treated connection point.
System Overview
Guardian Sealing Systems are designed for field application at critical connection points — supplied as complete sealing kits with clear application instructions for consistent results.
Integrated Corrosion Protection
- Authorised Guardian applicator — product and installation from one source
- Sealing integrated with coating, cathodic protection, and monitoring programs
- Field teams experienced in identifying and treating high-risk connection points
- Full documentation and inspection records provided
- Active across Southeast Asia, the Middle East, and Africa
Guardian Sealing Datasheets
Download technical datasheets for the Guardian sealing product range.
Guardian ELASTOSHIELD
Facades, Roofs, Wet Areas & Concrete Decks
A single-component, water-based 100% acrylic copolymer elastomeric waterproofing membrane for facades, roofs, walls, wet areas, and concrete decks.
- Application Temp
- 5°C to 40°C
- Elongation
- >500% (ASTM D412)
- UV Resistance
- No effect after 5,000 hours
- Shelf Life
- 12 Months
- Highly flexible — accommodates movement and minor cracking across a wide range of substrates
- Excellent UV, weathering, and CO₂ resistance — proven track record of over 30 years
- Heat reflective — white formulation reflects 80% of solar energy, reducing energy costs
- Safe, water-based, non-flammable formulation — no solvents, no pungent smell, easy water cleanup
- Warranties available for 5, 10, or 15 year periods against leaks caused by normal weathering
Guardian FB 1000 Tape
Above Ground / Structural Steel & Tank Chimes
A cold-applied butyl tape overwrap system with needle-punched fleece backing for above ground corrosion protection of pipes, structural steel, and tank chime sealing.
- Total Thickness
- 1.00 mm
- Application Temp
- 0°C to 45°C
- Max Service Temp
- 80°C
- Peel Adhesive Strength
- 27 N/25mm
- Strong bond and impervious seal — fast and easy above ground installation with no special equipment required
- High tack grey butyl adhesive — conforms to irregular shapes with consistent uniform thickness
- UV resistant and applicable over a wide temperature range
- Fleece backing compatible with Guardian Elastoshield or alternative 100% solid topcoats
Guardian Tank Boot Sealing System (TBSS)
Above Ground / Storage Tank Base Sealing
A multi-layer corrosion protection and waterproof sealing system for storage tank bases, suitable for new installations and refurbishment of existing tanks.
- System Layers
- 6-product multi-layer system
- Surface Prep Standard
- ISO 8501-1 St2
- Topcoat
- Guardian Elastoshield Acrylic (2 coats, 500–750 microns each)
- Overlap Requirement
- Minimum 50mm between tape layers
- Comprehensive corrosion and waterproof protection for tank base-to-concrete interface — new build and refurbishment
- Multi-layer system with petrolatum and butyl chemistries provides redundant barrier protection
- FB1000 fleece-backed tape accepts Elastoshield topcoat for UV and weather resistance
- Minimal surface preparation required — power wire brush to ISO 8501-1 St2, no blasting needed
Petrolatum Primer (Hi-Tack)
Tank Boot Sealing / Above Ground Corrosion Protection
A petrolatum compound incorporating inert fillers and corrosion inhibitors, serving as the key first-layer primer in the Guardian Tank Boot Sealing System.
- Application Temp
- -10°C to +50°C
- Service Temp
- -10°C to +75°C
- Coverage
- 5 m²/kg (average)
- Petrolatum Content
- 75% min by weight
- Key primer component of the Guardian Tank Boot Sealing System — inert, stable, and plastic across a wide temperature range
- Profiles minor surface imperfections for uniform application of petrolatum mastic and tape
- Manufactured in accordance with AWWA Standard C217-14
- Service life and shelf life both exceeding 30 years
| System | Application Temp | Elongation | UV Resistance | Shelf Life |
|---|---|---|---|---|
| Guardian ELASTOSHIELD | 5°C to 40°C | >500% (ASTM D412) | No effect after 5,000 hours | 12 Months |
| Guardian FB 1000 Tape | 1.00 mm | 0°C to 45°C | 80°C | 27 N/25mm |
| Guardian Tank Boot Sealing System (TBSS) | 6-product multi-layer system | ISO 8501-1 St2 | Guardian Elastoshield Acrylic (2 coats, 500–750 microns each) | Minimum 50mm between tape layers |
| Petrolatum Primer (Hi-Tack) | -10°C to +50°C | -10°C to +75°C | 5 m²/kg (average) | 75% min by weight |
Need help choosing the right system? Talk to our engineering team →
Seal Your Critical Connection Points
Contact our coating specialists to discuss sealing system selection and integration with your corrosion protection program.