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Western Sealtech spliced & vulcanised seals are manufactured from precision-extruded elastomer profiles that are compression-molded into continuous, joint-free gaskets. Unlike adhesive-bonded joints, vulcanised splices achieve joint strength equal to or stronger than the parent material, ensuring leak-free performance, long service life, and reliability in applications where molded seals are impractical or impossible.
Spliced & Vulcanised Seals
Seamless, high-strength custom gaskets engineered for large perimeters, complex geometries, and critical sealing environments
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Company Brochure
- Company Overview Since 1972
- Engineering & Manufacturing Capabilities
- Custom Sealing Solution Expertise
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9.8 MB
Seamless seals for oversized, complex, and high-risk applications
Types of Spliced & Vulcanised Seals
Spliced & vulcanised seals are classified by profile type and functional requirement to ensure correct sealing performance, durability, and installation reliability.
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Technical Capabilities
Western Sealtech manufactures precision spliced and vulcanised seals for large enclosures and industrial sealing systems.
Operating Performance
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Temperature Range (Material Dependent)
-60°C to +250°C
Joint Strength
Near-parent material strength at splice joint
Materials & Reinforcement
Materials Available
EPDM
Silicone
FKM
NBR
Neoprene
Natural
Compliance Options
FDA
REACH
RoHS
Railway fire standards
Radiation Safe
Construction Types
- Hot vulcanised joints
- Cold bonded splices
- Endless O-rings (large diameter)
- Frame gaskets
- Corner molded frames
Testing & Quality
- Joint integrity testing
- Dimensional inspection
- Adhesion strength validation
- Compression set testing
Engineering Support
- Custom tooling for corner molds
- Frame gasket development
- Small to bulk production
Operating Performance
Temperature Range (Material Dependent)
-60°C to +250°C
Joint Strength
Near-parent material strength at splice joint
Materials & Reinforcement
Materials Available
EPDM
Silicone
FKM
NBR
Neoprene
Natural
Compliance Options
FDA
REACH
RoHS
Railway fire standards
Radiation Safe
Construction Types
- Hot vulcanised joints
- Cold bonded splices
- Endless O-rings (large diameter)
- Frame gaskets
- Corner molded frames
Testing & Quality
- Joint integrity testing
- Dimensional inspection
- Adhesion strength validation
- Compression set testing
Engineering Support
- Custom tooling for corner molds
- Frame gasket development
- Small to bulk production
Key Benefits
Unbreakable vulcanised joints
Compression-moulded splices eliminate adhesive failure points, delivering joint strength comparable to the base elastomer.
Custom geometries & unlimited perimeters
Extruded profiles are joined into circular, rectangular, U-shaped, or complex frames for large doors, hatches, and enclosures.
Performance in extreme environments
Designed to maintain sealing integrity across wide temperature ranges, pressure fluctuations, and chemical exposure.
Our Core Industries
Rail and Mass Transit
Semiconductor
Powder & Bulk Handling
Actuator Valve
Pharmaceutical
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Rail & Mass Transit
Fire-safe profiles for doors, windows, HVAC
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Semiconductor
Heat-resistant components designed for high-pressure
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Powder & Bulk Handling
Leak-proof inflatable seals for dust-tight material flow
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Actuator Valve
Heat-resistant components designed for high-pressure
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Pharmaceutical
Sterile inflatable seals & hygienic tubing solutions.
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Industries We Serve
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Rail & Mass Transit
Fire-safe profiles for doors, windows, HVAC
Semiconductor
Heat-resistant components designed for high-pressure
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Powder & Bulk Handling
Leak-proof inflatable seals for dust-tight material flow
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Pumps & Valves
Heat-resistant components designed for high-pressure
Pharmaceutical
Sterile inflatable seals & hygienic tubing solutions.
Industries We Serve
Pharmaceutical
Chemical Handling
Industrial Furnaces & Autoclaves
Rail & Mass Transit
Pharmaceutical, Aseptic & Liquid Injection Systems
Spliced and vulcanised seals are used on large doors, isolators, autoclaves, and fluid-handling equipment where seamless joints are critical for sterility, pressure integrity, and repeated CIP/SIP or sterilization cycles.
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Carbon Capture Systems
These seals are applied on large flanges, access panels, and process enclosures where long perimeters, pressure variation, and chemical exposure demand joint-free sealing to prevent leakage of CO₂ and process gases.
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Autoclaves, Ovens & Furnaces
Used in large door frames, equipment enclosures, and HVAC housings, spliced and vulcanised seals deliver continuous sealing around complex geometries while handling vibration, temperature variation, and frequent opening cycles.
Explore industry
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Rail & Mass Transit
Used in large door frames, equipment enclosures, and HVAC housings, spliced and vulcanised seals deliver continuous sealing around complex geometries while handling vibration, temperature variation, and frequent opening cycles.
Explore industry
Industries We Serve
Pharmaceutical, Aseptic & Liquid Injection Systems
Spliced and vulcanised seals are used on large doors, isolators, autoclaves, and fluid-handling equipment where seamless joints are critical for sterility, pressure integrity, and repeated CIP/SIP or sterilization cycles.
Explore industry
Carbon Capture Systems
These seals are applied on large flanges, access panels, and process enclosures where long perimeters, pressure variation, and chemical exposure demand joint-free sealing to prevent leakage of CO₂ and process gases.
Explore industry
Autoclaves, Ovens & Furnaces
Used in large door frames, equipment enclosures, and HVAC housings, spliced and vulcanised seals deliver continuous sealing around complex geometries while handling vibration, temperature variation, and frequent opening cycles.
Explore industry
Rail & Mass Transit
Used in large door frames, equipment enclosures, and HVAC housings, spliced and vulcanised seals deliver continuous sealing around complex geometries while handling vibration, temperature variation, and frequent opening cycles.
Explore industry
FAQs
Explore our FAQs for quick answers to common questions. For deeper insights, check out:
How are vulcanised joints different from adhesive splices?
Vulcanised joints are formed by compression molding with uncured elastomer, creating a homogeneous bond stronger than adhesive-joined seals, which are prone to delamination.
Can you manufacture seals for very large or non-standard perimeters?
Yes. Spliced & vulcanised seals are ideal for oversized perimeters and complex geometries where molding is impractical.
Do vulcanised joints create weak points in sealing?
No. Properly vulcanised joints eliminate weak points and provide uniform sealing force across the entire perimeter
Which materials are suitable for spliced & vulcanised seals?
Common materials include silicone, EPDM, FKM, NBR, sponge elastomers, and fabric-reinforced compounds based on application needs.
Are these seals suitable for pressure or vacuum applications?
Yes. When designed correctly, vulcanised seals perform reliably under pressure, vacuum, and cyclic loading conditions.
Do you support cleanroom and validation requirements?
Yes. Materials and processes support FDA, USP Class VI, and cleanroom-controlled manufacturing when required.
What is the typical turnaround time?
Standard profiles are produced quickly, with prototypes typically available within 1–2 weeks depending on geometry and material.
Download our Brochures
Inflatable Seals
12.3 MB
Inflatable Seals
12.3 MB
Inflatable Seals
12.3 MB
Inflatable Seals
12.3 MB
Inflatable Seals
12.3 MB
Inflatable Seals
12.3 MB
Inflatable Seals
12.3 MB
Inflatable Seals
12.3 MB
Inflatable Seals
12.3 MB
Inflatable Seals
12.3 MB
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