Rubber & Plastic Moulding

Rubber and plastic moulding capabilities covering compression, transfer, injection, extrusion, and in-house compounding for industrial applications requiring consistency, durability, and performance.

NEPEAN'S SECONDARY BRANDMARK

Our Capabilities

Integrated polymer processing -
Compounding, moulding, injection, extrusion

Rubber Moulding

Compression, transfer, and injection moulding designed around compound rheology, cure kinetics, part geometry, wall thickness variation, and tooling flow paths to achieve dimensional stability and repeatability.

Rubber Mixing & Compounding

In-house compounding and masterbatch development controlling durometer, tensile strength, elongation, abrasion resistance, compression set, chemical compatibility, and long-term ageing behaviour.

Plastic Injection Moulding

Precision injection moulding with controlled melt flow, shrinkage, fibre orientation (where applicable), tolerance stack-up, and surface finish for functional industrial components.

Rubber Extrusion

Continuous extrusion of elastomeric profiles with controlled die swell, cross-sectional consistency, dimensional tolerance, and material performance in EPDM, silicone, nitrile, and engineered compounds.

1
Rubber Moulding

Compression, transfer, and injection moulding designed around compound rheology, cure kinetics, part geometry, wall thickness variation, and tooling flow paths to achieve dimensional stability and repeatability.

1
Rubber Mixing & Compounding

In-house compounding and masterbatch development controlling durometer, tensile strength, elongation, abrasion resistance, compression set, chemical compatibility, and long-term ageing behaviour.

1
Plastic Injection Moulding

Precision injection moulding with controlled melt flow, shrinkage, fibre orientation (where applicable), tolerance stack-up, and surface finish for functional industrial components.

3
Rubber Extrusion

Continuous extrusion of elastomeric profiles with controlled die swell, cross-sectional consistency, dimensional tolerance, and material performance in EPDM, silicone, nitrile, and engineered compounds.

materials processed

Nepean processes a wide range of elastomers and polymers

Extreme UV Exposure
EPDM
Ethylene Propylene Diene Monomer. Optimized for high-ozone industrial environments and long-term UV exposure.
THERMAL RANGE
-50°C | +150°C
CLASSIFICATION
Elastomer
Oil & Fuel Resistance
NITRILE
NBR Elastomer. Engineered for superior resistance to petroleum-based oils, fuels, and greases in high-pressure sealing.
THERMAL RANGE
-30°C | +120°C
CLASSIFICATION
NBR Polymer
High-temperature Stability
SILICONE
Inert synthetic elastomer with exceptional thermal range. Engineered for high-purity medical and industrial sealing.
THERMAL RANGE
-60°C | +230°C
CLASSIFICATION
FDA Grade
High Abrasion Resistance
POLYURETHANE
Exceptional durability and load-bearing capacity. Designed for heavy-duty industrial rollers, pads, and scrapers.
DUROMETER
60A - 95A
TENSILE STRENGTH
HIGH
Vibration & Marine Stability
NEOPRENE (CR)
Multi-purpose polychloroprene elastomer  balanced for seawater resistance, flame retardancy, and physical toughness.
THERMAL RANGE
-40°C | +120°C
ENVIRONMENT
SEA/WEATHER
Extreme Chemical Resistance
VITON (FKM)
High-performance fluoroelastomer engineered for extreme chemical environments and high-vacuum.
THERMAL RANGE
-20°C | +200°C
ENVIRONMENT
ACIDS/FUELS
Heat & Oil Resistant Elastomer
HMBR
Designed for reliable performance under high heat and oil-exposed conditions.
THERMAL RANGE
−40°C to +150°C
CLASSIFICATION
Industrial / Oil & Heat Resistant
High Elasticity & Abrasion Resistance
Natural rubber
Excellent resilience and tear strength, ideal for dynamic applications requiring flexibility and durability.
THERMAL RANGE
−50°C | +80°C
CLASSIFICATION
GENERAL-PURPOSE ELASTOMER
Cost-Effective Abrasion Resistant Rubber
SBR
General-purpose rubber offering good abrasion resistance and mechanical strength for non-oil applications.
THERMAL RANGE
−40°C | +100°C
ENVIRONMENT
DRY / MECHANICAL
Excellent Air & Gas Impermeability
Butyl
Specialty elastomer with outstanding resistance to gas diffusion, moisture, and aging.
THERMAL RANGE
−50°C | +120°C
CLASSIFICATION
SPECIALTY ELASTOMER
Typical applications

Designed for fit, durability,
& repeatable performance

End-to-end manufacutring control

From material formulation
to validated components

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Formulation

Compound selection based on abrasion, impact, and fatigue requirements

2
Tooling

In-house mould and die design to achieve dimensional accuracy and repeatability.

3
Moulding

Controlled moulding and casting of rubber and polyurethane components

4
Finishing

Bonding, trimming, assembly, and surface preparation

5
Validation

Inspection and testing to confirm fit, material integrity, and performance