CR — Chloroprene Rubber

Neoprene Rubber

Neoprene is the most versatile general-purpose synthetic rubber, offering balanced resistance to oils, weathering, ozone, and moderate chemicals. We supply CR sheet rubber in standard, moulded, expanded, insert-reinforced, and FRAS grades for applications spanning marine, mining, HVAC, and general industrial sealing.

At a Glance

Temperature Range

-40 °C to +120 °C continuous

Thickness Range

0.5 mm to 38 mm

Hardness Range

30–90 Shore A

Brands We Stock

ReglinGardiner
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Technical Properties

Typical values across stocked grades. Specific grade data sheets available on request.

Temperature Range-40 °C to +100 °C continuous (standard CR); +120 °C continuous achievable in premium high-temperature compounds; +130 °C intermittent peak
Hardness (ASTM D2240)30–90 Shore A
Tensile Strength (ASTM D412)7–25 MPa
Elongation at Break (ASTM D412)200–600%
Compression Set (ASTM D395)20–40%. 22 h @ 100 °C
Tear Strength (ASTM D624)20–40 kN/m (standard); premium high-tear grades to 60
Specific Gravity (ASTM D792)1.20–1.50
Thickness Range0.5–38 mm stocked
ASTM D2000 ClassificationBC / BE
Limiting Oxygen Index (ASTM D2863)26–40% (pure CR ~26%; FR-compounded grades 35–40%)
Flammability (UL 94)Self-extinguishing in FR-compounded grades (HBF/HF-1 sponge; V-0/V-1 solid)
Ozone Resistance (ASTM D1171)Excellent vs NR/NBR. No cracking at 50 pphm / 40 °C / 70 h
FRAS Grades (AS/NZS 4606)Available for underground coal mining

Common Applications

  • Marine and offshore gaskets and seals
  • HVAC ductwork gaskets and vibration isolation
  • Refrigeration system gaskets
  • Mining equipment seals (FRAS grades)
  • Transformer and switchgear gaskets
  • Expansion joints and flexible connectors
  • Moderate oil and chemical exposure gaskets
  • Weather seals for enclosures and access panels
  • Conveyor belt skirting and lining
  • General-purpose industrial gaskets

Available Grades

Brands we stock: Reglin, Gardiner

Standard CR (60 Shore A)

General-purpose black neoprene sheet with balanced resistance to oils, ozone, and weathering. Our most popular neoprene grade for all-round industrial sealing.

Moulded CR (Multiple Durometers)

Precision-moulded neoprene available in a range of hardnesses. Tighter dimensional tolerances and more consistent properties than calendered sheet.

Expanded Neoprene (ASTM D1056)

Closed-cell expanded neoprene classified to ASTM D1056. Excellent for weather sealing, cushioning, and low-pressure gasket applications. See also our dedicated closed-cell neoprene page for grade-specific data.

Expanded Neoprene (CR-160)

Medium-density closed-cell neoprene sponge for insulation, vibration dampening, and general-purpose sealing where moderate compression is needed.

CR Insert-Reinforced

Neoprene bonded to nylon or polyester fabric plies for improved tear resistance and dimensional stability in large-format gaskets and diaphragms.

CR FRAS (Fire Retardant Anti-Static)

Specially formulated neoprene meeting fire retardant and anti-static requirements for underground coal mining and hazardous area applications. Compliant with AS/NZS 4606.

Related Resources

Chemical Compatibility

Check neoprene resistance to specific chemicals and media.

Sheet Rubber Selection

Compare CR against other rubber compounds side by side.

Shore Hardness Guide

Understand durometer scales and what hardness means in practice.

Related Materials

Nitrile (NBR) EPDM Natural Rubber

Need Neoprene Rubber?

We supply neoprene rubber in sheet, roll, and custom die-cut forms. Contact our team for pricing, data sheets, or technical assistance.

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Disclaimer

This resource is provided for general engineering reference only and does not constitute professional advice, specification, or guarantee of performance. Actual results depend on specific application conditions. Universal Gaskets Pty Ltd accepts no responsibility or liability for decisions made based on this information. For full terms, see our Terms & Conditions.