What is the difference between fine grain and coarse grain?

The main difference between fine grain and coarse grain is their texture and compressibility. Fine grain has a smoother, more uniform surface for precision sealing on regular surfaces, ideal for construction gaskets, window and door sealing, and architectural applications. Coarse grain has a rougher, more porous surface for greater compressibility on irregular surfaces, ideal for marine applications, outdoor seals, and exposed structures.

Neoprene Cork | Fine & Coarse Grain Sealing Sheets

The neoprene cork you need for construction gaskets, marine applications, and outdoor sealing. Excellent weather, ozone, and UV resistance. 60-65 Shore A hardness. Available in fine and coarse grain. Get a quote in 24 hrs!

Neoprene Cork | Cork Sheets for Outdoor Sealing in Fine and Coarse Grain

Looking for a cork sheet that offers reliable sealing in outdoor environments? Neoprene cork is the solution you need. This composite material combines the excellent sealing properties of natural cork with the superior weather resistance, ozone resistance, and aging resistance of neoprene, creating an ideal material for construction gaskets, marine applications, and systems exposed to adverse environmental conditions.

Available in two variants: fine grain (for precision sealing on smooth surfaces) and coarse grain (for greater compressibility on irregular surfaces). With a hardness of 60-65 Shore A and a wide temperature range of -20°C to 120°C, neoprene cork is perfect for expansion joints, window and door sealing, and construction and outdoor applications where reliable sealing against UV, rain, and weather changes is required.

Available in cork sheets with ASTM certification. Need neoprene cork for your project? Keep reading to discover all the advantages of our neoprene cork in fine and coarse grain.

Neoprene Cork in Fine and Coarse Grain - Everest Group

Neoprene Cork Properties for Outdoor Sealing

Neoprene cork stands out for its excellent sealing properties and environmental resistance, available in fine grain and coarse grain:

Excellent weather and ozone resistance: Ideal for construction gaskets, marine applications, and outdoor sealing exposed to UV and adverse weather conditions.
Fine vs coarse grain: Fine grain offers precision sealing on smooth surfaces; coarse grain provides greater compressibility on irregular surfaces.
Wide temperature range (-20°C to 120°C): Maintains its sealing properties in varying conditions, ideal for cork sheets in outdoor applications.
Good acid and alkali resistance: Perfect for industrial and marine environments with chemical exposure.
Excellent sealing and compressibility: Adapts to irregular surfaces, ensuring reliable sealing.
Resistance to aging and environmental degradation: Extends material life in outdoor applications and exposed structures.

These properties make neoprene cork an indispensable material in construction, marine applications, architectural applications, and any outdoor environment requiring reliable sealing against adverse weather conditions.

Neoprene Cork Technical Data Sheet

Technical specifications of neoprene cork in fine and coarse grain for outdoor sealing

PHYSICAL PROPERTIES
PARAMETERS	METHOD	SPECIFICATIONS
SHORE A HARDNESS	ASTM-D2240	60 - 65
TENSILE STRENGTH, psi	ASTM-D412	350 MINIMUM
ELONGATION, %	ASTM-D412	100 MINIMUM
TEMPERATURE RANGE, °C	ASTM-D573	-20 TO 120

CHEMICAL PROPERTIES
SUBSTANCES	METHOD	SPECIFICATIONS
ACID AND ALKALI RESISTANCE	ASTM-D471	GOOD
OIL RESISTANCE	ASTM-D471	EXCELLENT

Grain Variants

Fine Grain: Ideal for precision sealing on smooth surfaces, such as construction gaskets and window sealing.

Coarse Grain: Perfect for greater compressibility on irregular surfaces, such as marine applications and structural sealing.

Neoprene Cork Applications | Uses in Outdoor Sealing

Discover the sectors where neoprene cork is essential for sealing against weather and adverse climatic conditions

Construction & Architecture

Neoprene cork is ideal for expansion joints, window sealing, doors, and structural elements. Its weather resistance and sealing capability make it perfect for construction and architectural applications. Available in fine grain for precision sealing.

Marine Applications

Neoprene cork is the preferred choice for vessel gaskets, port equipment, and coastal structures. Its ozone resistance and moisture resistance ensure reliable sealing in demanding marine applications.

Outdoor & Weather Protection

Neoprene cork is used in outdoor equipment sealing, urban furniture, and weather protection. Its coarse grain offers greater compressibility on irregular surfaces, ideal for outdoor seals and exposed components.

More applications for neoprene cork

Neoprene cork is also used in cork sheets for vibration isolation, pipe gaskets, cooling systems, and pumping equipment. Its versatility, weather resistance, and sealing capability make it the preferred material for applications where reliability and durability are priorities.

Neoprene Cork Benefits | Why Choose It?

Advantages that make neoprene cork the best choice for outdoor sealing and adverse weather conditions

Excellent Weather & UV Resistance

Neoprene cork offers superior resistance to UV, ozone, and adverse weather conditions, ideal for cork sheets in outdoor applications and construction.

Wide Temperature Range (-20°C to 120°C)

Operates efficiently from -20°C to 120°C, maintaining its sealing properties in varying conditions, ideal for construction gaskets and marine applications.

Excellent Sealing Capability

Neoprene cork offers great compressibility and sealing capability on irregular surfaces, available in fine grain (precision) and coarse grain (greater compressibility).

Good Chemical Resistance

Resistant to acids, alkalis, and chemicals, ensuring durability in demanding industrial and marine environments.

Excellent Ozone Resistance

Neoprene cork offers superior performance against ozone exposure, extending its service life in outdoor and exposed applications.

Natural Cork Properties

Combines the advantages of natural cork (compressibility, damping) with neoprene durability, offering a versatile and durable material for outdoor sealing.

Reliability in Outdoor Sealing

Neoprene cork from Everest Group combines weather resistance, wide temperature range, and excellent sealing capability to deliver exceptional performance in construction, marine applications, and outdoor environments. Available in fine grain and coarse grain, ASTM certified, it guarantees safety, durability, and reliability in the most demanding applications.

Neoprene Cork Certifications & Standards

Materials certified under international standards for outdoor sealing and weather resistance

ASTM D2240

Shore A Hardness

Certifies neoprene cork hardness at 60-65 Shore A, ensuring the balance between flexibility and strength for cork sheets and outdoor seals.

ASTM D412

Mechanical Properties

Certifies 350 psi tensile strength and 100% elongation, ensuring durability in construction gaskets and marine applications.

ASTM D471

Chemical Resistance

Certifies acid and alkali resistance and oil resistance of neoprene cork, ideal for outdoor and industrial environments.

Need a certified material for outdoor sealing? Our ASTM neoprene cork guarantees maximum reliability and durability in construction, marine, and outdoor applications. Contact us for technical support.

Neoprene Cork: Fine Grain vs Coarse Grain

Choose the right variant for your outdoor sealing application

Fine Grain

Texture: Smoother, more uniform surface
Compressibility: Lower, ideal for regular surfaces
Sealing: Precise in high-demand applications
Ideal for: Construction gaskets, window and door sealing, architectural applications requiring precision
Advantage: Greater wear resistance on smooth surfaces

Recommended for precision

Coarse Grain

Texture: Rougher, more porous surface
Compressibility: Higher, ideal for irregular surfaces
Sealing: Effective in high-compression applications
Ideal for: Marine applications, outdoor seals, pipe gaskets, exposed structures
Advantage: Better adaptation to surfaces with imperfections

Recommended for compressibility

Not sure which variant to choose? Both grades offer the same weather resistance and temperature range. The choice depends on the sealing surface: fine grain is for smooth surfaces, coarse grain is for irregular or imperfect surfaces. At Everest Group, we advise you to choose the right option for your project. Contact us.

Need Neoprene Cork in Fine or Coarse Grain for Your Project?

At Everest Group, we have the solution you are looking for. From cork sheets in fine and coarse grain to custom construction gaskets and outdoor seals. Excellent weather, ozone, and UV resistance. ASTM certified. Get a quote in 24 hrs!

Request a Quote

Frequently Asked Questions

Do you have questions about neoprene cork? At Everest Group, we have compiled the most common questions and their answers for you. Just select a question and you will see the answer immediately.

Neoprene cork is a composite material that combines the excellent sealing properties of natural cork with the superior weather, ozone, and UV resistance of neoprene. It is primarily used in construction gaskets, marine applications, and outdoor sealing where protection against adverse weather conditions is required. Available in fine grain (for precision sealing) and coarse grain (for greater compressibility).

The main difference between fine grain and coarse grain is their texture and compressibility:

Fine grain: Smoother, more uniform surface. Offers precision sealing on regular surfaces. Ideal for construction gaskets, window and door sealing, and architectural applications.
Coarse grain: Rougher, more porous surface. Offers greater compressibility on irregular surfaces. Ideal for marine applications, outdoor seals, and exposed structures.

Both grades offer the same weather resistance and temperature range (-20°C to 120°C).

Yes, absolutely. Neoprene cork is formulated with neoprene, which is known for its excellent weather, ozone, and UV resistance. This makes it the preferred choice for outdoor applications, construction, and marine applications where exposure to adverse weather conditions is constant. Its resistance is ASTM D471 certified.

Neoprene cork is available in cork sheets in different thicknesses and sizes. We also offer custom cutting and custom gasket fabrication in fine grain and coarse grain to suit each project's specific needs. To learn about available options and receive a personalized quote, we invite you to contact us.

Yes. Everest Group's neoprene cork complies with ASTM D2240 (Shore A Hardness), ASTM D412 (Mechanical Properties), and ASTM D471 (Chemical Resistance). These certifications guarantee the quality, reliability, and safety of the material in outdoor sealing and weather resistance applications.

Yes. Everest Group ships neoprene cork sheets throughout the United States, Canada, Mexico, Central America, and Spain. Delivery time depends on location and product availability. Contact us for shipping times and costs to your location.