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Technical Specifications

Density
0.95 g/cm³
Tensile Strength
20–30 MPa
Tensile Modulus
900–1200 MPa
Hardness
Shore D 65–70
Elongation at Break
500%+
Impact Strength
Virtually unbreakable
Melting Point
130–135°C
Max Continuous Service Temp
82–88°C
Coefficient of Thermal Expansion
100–200 × 10⁻⁶ /°C
UV Stability
Excellent (UV-stabilized grades)
Moisture Absorption
<0.01%
Chemical Resistance
Excellent
CNC Machinability
Very Good
Thermoforming
Fair
Welding
Good
Water Resistance
Complete
Corrosion Resistance
Excellent
Slip Resistance
Textured finishes

Certifications & Compliance

Seaboard HDPE Marine Grade

Seaboard® Marine HDPE Sheet – A premium marine-grade polyethylene built to withstand UV, saltwater, and tough outdoor conditions. Commonly used for boat parts, cabinetry, and marine panels, Seaboard Marine 1 is strong, lightweight, and easy to cut or weld for reliable long-term performance.

Stronger
Marine-Grade
Waterproof
Years
UV Resistant
Outdoor Friendly

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Technical Specifications

Density
0.95 g/cm³
Tensile Strength
20–30 MPa
Tensile Modulus
900–1200 MPa
Hardness
Shore D 65–70
Elongation at Break
500%+
Impact Strength
Virtually unbreakable
Melting Point
130–135°C
Max Continuous Service Temp
82–88°C
Coefficient of Thermal Expansion
100–200 × 10⁻⁶ /°C
UV Stability
Excellent (UV-stabilized grades)
Moisture Absorption
<0.01%
Chemical Resistance
Excellent
CNC Machinability
Very Good
Thermoforming
Fair
Welding
Good
Water Resistance
Complete
Corrosion Resistance
Excellent
Slip Resistance
Textured finishes

Certifications & Compliance

Description

Seaboard UV is a high-density polyethylene (HDPE) sheet engineered for outdoor applications where durability and UV resistance are essential. It is designed to withstand harsh environments, including exposure to sunlight, saltwater, moisture, and chemicals, without fading, cracking, or degrading over time.

Key Features:

UV-Resistant: Built with UV inhibitors to prevent degradation from prolonged sun exposure.

Weatherproof: Resistant to moisture, saltwater, and extreme temperatures, making it ideal for marine environments.

Durable & Impact-Resistant: Maintains strength and rigidity even in challenging conditions.

Low Maintenance: Will not rot, corrode, delaminate, or require painting or sealing.

Easy to Fabricate: Can be easily cut, routed, welded, and thermoformed with standard tools.

Common Applications:

Marine & Boating: Ideal for boat components, dock boards, hatches, and cabinets.

Outdoor Furniture: Used in park benches, tables, and playground equipment.

Signage: Perfect for long-lasting outdoor signs and displays.

Agricultural & Industrial: Great for equipment housings, fencing, and industrial panels.

Recreational Vehicles (RVs): Used in RV cabinetry, storage, and trim.

Additional information

Weight 20 kg
Dimensions 2440 × 1220 × 15 mm

Technical Data Sheet

POL Seaboard Technical Data Sheet

Reviews

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Plastic Online place picture
4.6
Based on 16 reviews
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jock muirhead profile picturejock muirhead
20:02 13 Dec 25
Fantastic quality product and cut to perfection. Will buy again. Fast service and a small treat with the product too.
Brian Lyttle profile pictureBrian Lyttle
01:02 17 Nov 25
Very helpful with requirements
Response from the owner 03:04 17 Nov 25
Thanks Brian, it means the world to us here at Plastic Online.
Andrew Smith profile pictureAndrew Smith
04:40 03 Nov 25
Christopher Jenkins profile pictureChristopher Jenkins
02:19 27 Oct 25
Very easy order process gave me the exact product wanted. Progress of the order was updated clearly and quickly, as was delivery!
Could not have hoped for an easier process.
Many thanks
mark swinchatt profile picturemark swinchatt
07:43 21 Oct 25
Prompt response to queries and good service support.
Raymond Hughes profile pictureRaymond Hughes
21:31 06 Oct 25
Great service and delivery including follow up phone call
G'day M8 profile pictureG'day M8
07:22 29 Sep 25
Fast manufacture and delivery and good customer service. Quality of product is first rate (HDPE cut to order).
andrew profile pictureandrew
23:31 13 Sep 25
Materials deivered to a regional area within a few days. Great service.
Arek Werstak profile pictureArek Werstak
21:15 31 Jul 25
Response from the owner 22:30 31 Jul 25
Thanks for the 5 stars Arek.
Lucy Watson profile pictureLucy Watson
08:43 31 Jul 25
Response from the owner 08:59 31 Jul 25
Much appreciated Lucy
William Evans profile pictureWilliam Evans
00:13 28 Jul 25
Great service. Very happy with the product and would order again
Response from the owner 09:00 31 Jul 25
Thanks William, looking forward to your future orders, we love repeat customers
Petra Duncan-Czizek profile picturePetra Duncan-Czizek
23:38 27 Jul 25
Response from the owner 09:00 31 Jul 25
Thanks Petra, happy to help and appreciate the 5 stars, it really helps up
John Smith profile pictureJohn Smith
23:35 02 Jul 25
Spoke to someone named Kip or kit this morning she was very rude and blunt,
We have an urgent requirement for Teflon sheet and she scoffed at me when I said we needed it urgently, and just said we are too busy to do that.
Very unprofessional
When owners holland plastic read this comment just be aware our order would have been in excess of $20k
we were happy to pay extra in overtime rates or overnight freight.
I would hate to have this person completing sales for my company especially when we have quite a large order needing sorted

Thank you for you terrible service we shall order from an interstate company from now on 👎🏻

Frequently Asked Questions

What makes Seaboard UV different from standard HDPE?

Seaboard UV includes UV stabilizers that protect it from sun damage, making it more durable for outdoor applications compared to regular HDPE.

Is Seaboard UV waterproof?

Yes, Seaboard UV is highly resistant to water, making it perfect for marine and outdoor environments.

Can Seaboard UV be painted or glued?

No, Seaboard UV has a low surface energy, which makes it difficult to paint or bond with adhesives. Mechanical fastening or welding is recommended.

How do you clean Seaboard UV?

Simply use soap, water, and a soft brush or cloth. For tougher stains, mild household cleaners can be used.

Is Seaboard UV environmentally friendly?

Yes, Seaboard UV is recyclable, and its long lifespan reduces the need for frequent replacements, minimizing environmental impact.

Can Seaboard UV be used in extreme temperatures?

Yes, Seaboard UV performs well in a wide range of temperatures, from freezing conditions to intense heat, without cracking or warping.

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