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Gaskets and Seals

Engineered Foam Solutions for Defence, Aerospace, and Marine

At PJ Bowers, we are Australia’s leading closed-cell foam converter, delivering precision-engineered gaskets and seals for mission-critical applications in defence, aerospace, marine, and industrial sectors. As a JOSCAR-AU registered supplier (Certificate valid until September 2026) and proud member of the Australian Industry & Defence Network (AIDN), we provide high-performance, compliant solutions tailored to the stringent demands of naval vessels, submarines, aircraft, and advanced systems.

Why Choose PJ Bowers Gaskets & Seals?

Our gaskets and seals leverage advanced closed-cell foams like Neofoam CR, NBR, LC, EPDM, Evazote®, and Plastazote®, offering unmatched durability, chemical resistance, and environmental performance. Designed and tested in our in-house R&D lab, our products meet rigorous standards (e.g., ASTM D-1056, MIL-STD where applicable) for defence and aerospace programs, including AUKUS and Hunter-class frigates.

Watertight & Airtight Sealing

Ensure hull integrity and environmental protection in submarines and naval vessels (e.g., ASC, Austal, Saab programs).
window seals, gaskets, for hig spec applications aerospace marine etc

Vibration & Shock Damping

Reduce wear in aerospace components and combat systems (e.g., Boeing, Lockheed Martin applications).

Chemical & Fire Resistance

Inert foams withstand oils, fuels, and extreme temperatures, ideal for missile systems and C4ISR (Raytheon, HII).
Technical panel infills, gaskets and more for high spec applications aerospace, automotive, spacecraft

Custom Fabrication

Precision cutting, laminating, and welding via 3D CAD design and rapid prototyping for bespoke solutions.

Applications in Defence & Aerospace

Our gaskets and seals are engineered to support Australia’s defence supply chain, delivering reliability in high-stakes environments:

Naval & Submarine Systems

Watertight seals for hulls, hatches, and compartments; vibration-dampening gaskets for propulsion systems (AUKUS, BAE Systems).

Aerospace Components

Thermal and acoustic seals for aircraft cabins and engines; protective gaskets for munitions transport (Boeing, Lockheed Martin).

Marine Buoyancy Modules

Compression-resistant seals paired with Neolon Buoyancy® Foam for vessel stability (Austal, Saab).

All Materials Available at PJ Bowers

EPE Sheet foam product image thumbnail

EPE Closed Cell Foam

A budget-friendly packaging and marine floatation foam. All our closed cell foams are waterproof.
Neolon XPE Sheet Foam Product image thumbnail

Neolon® XPE Closed Cell Foam

Recycled, moisture resistant, long-lasting, flame resistant low density floatation material, construction strong and quality insulation foam.
PE Polyethylene foam sheet product image thumbnail

Neofoam® PE Foam

Highest heat resistance, tensile and compressive strength, impact absorbing with slower recovery quality. Available in multiple densities.
EVA closed cell sheet foam product image

Neofoam® EVA Foam

Good strength with high elongation and conformity. A quick recovery or 'bounce' quality. Available in multiple densities.
a product image showing stiff joint fillers made from a very hard, high density PE foam

Stiff Joint Compressible Filler

Very High density compressible PE foam filler strips, for a more extreme heavy duty expansion joint or gasket.
Bridge foam compression joint, expansion joint, product image thumbnail

Bridgefoam®
Compressible Filler

Expands, contracts and recovers under heavy loads with proven track record in hundreds of road and bridge construction projects.
Neolon XPE tubes, insulation, foil faced options, many diameters available

Neolon® Foam Tubing

Neolon® XPE is extremely versatile, has great insulation qualities and available with and without a foil face.
Neolon XPE backing rod, gap filling, caulking, silicone, many diameters available

Neolon® Backing Rod

Our Neolon® XPE backer rods have a closed-cell foam structure which ensures the backing rod is waterproof, weatherproof and fire retardant.
a close up of Neolon XPE foam

Neolon® Expansion Joint
and Rolls

The famous Neolon XPE foam available as convenient, cut to size concrete expansion joint, or as large roll, with or without a foil layer of peel-off adhesive backing.

Ethafoam®

Unrivaled, high quality packaging and Archival foam. Cushioning against repeated impacts with excellent surface protection and high quality aesthetics.
a close up photo of Whisper acoustic foam

Whisper® Acoustic Foam

Scores a sound absorption rating of NRC 1.00 which is the highest possible rating for sound absorption under the standardised test.
zotefoams plstazote many different colors stacked on top of each other

Zotefoams® Plastazote & Evazote

Produced using a unique autoclave process, the Azote® range includes world-leading technical foam brands Plastazote® and Evazote®.