Neoprene Rubber Gaskets (Chloroprene / CR)

CR chloroprene flat seals for ozone, UV, marine and refrigeration service. Custom cut and sheet stock.

Overview

Neoprene rubber gaskets — also known as chloroprene gaskets or CR gaskets — balance moderate oil resistance with excellent weather, ozone and UV stability. This makes CR the practical choice for outdoor enclosures, marine hardware, HVAC equipment and refrigeration systems where neither the oil resistance of NBR nor the water resistance of EPDM alone tells the whole story. The typical service temperature for CR neoprene gaskets is −40°C to +120°C. It resists refrigerants such as R-22 and many HFC blends, although compatibility should be verified for each specific refrigerant and oil combination. CR also tolerates saltwater and weathering better than NBR, but it is not recommended for strong oxidizers, ketones or aromatic fuels. Common applications include marine hatch seals, refrigeration compressor gaskets, HVAC access doors, outdoor electrical cabinets and weather stripping. Forms include sheet stock, ring gaskets, full-face flanges and custom die-cut profiles. Standard hardness is 50–70 Shore A for compressible seals; 80–90 Shore A for higher bolt-load retention. We stock black CR neoprene sheet and cut gaskets to drawing. When requesting a quote, specify refrigerant or media if applicable, hardness, thickness, and whether the application is exposed to continuous UV or ozone.

Types

Marine & Outdoor CR Gaskets

UV and ozone-stabilized neoprene for continuous outdoor exposure and salt spray.

Best for: Hatch seals, deck hardware, outdoor cabinets, marine engine covers

Refrigeration Gaskets

CR compounds formulated for compatibility with legacy and HFC refrigerants.

Best for: Compressor flanges, access panels, cold-room doors

HVAC Enclosure Gaskets

Compressible neoprene for equipment doors and access panels.

Best for: Air handling units, rooftop units, filter housings

Materials

Material	Properties	Best For
CR 60 Shore A	General purpose; good ozone, UV and moderate oil resistance; −40°C to +120°C	HVAC doors, general outdoor seals
CR 70 Shore A (Marine)	Improved weather and saltwater resistance	Marine hatches, deck boxes, exposed hardware
Refrigeration Grade CR	Formulated for R-22, R-134a, R-407C and compatible oils	Compressor and system gaskets

Sizing

Neoprene gaskets are supplied to drawing or as sheet stock. Common thicknesses from 1/32 in to 1/4 in.

Thicknesses

• 1/32"
• 1/16"
• 3/32"
• 1/8"
• 3/16"
• 1/4"
• Custom

Colors

• Black
• Gray

Applications

Marine

Hatch seals, engine covers, deck hardware, cable entry seals

Refrigeration

Compressor flanges, access panels, cold-room door seals

HVAC

Rooftop unit doors, filter housings, duct access panels

Outdoor Equipment

Electrical enclosures, control cabinets, generator sets

Frequently Asked Questions

Is neoprene the same as chloroprene?

Yes. Neoprene is the DuPont trade name for polychloroprene rubber; CR is the ISO/ASTM abbreviation. Neoprene gasket and chloroprene gasket refer to the same elastomer family.

Are neoprene gaskets weather resistant?

Yes. CR has excellent resistance to ozone, UV and oxidation, making it a standard choice for outdoor and marine gaskets.

Can neoprene gaskets be used with refrigerants?

Neoprene is compatible with many refrigerants including R-22 and several HFC blends. Always verify compatibility with the specific refrigerant and lubricant before specifying.

How does neoprene compare to NBR for oil resistance?

NBR is superior for petroleum oil and fuel. Neoprene offers moderate oil resistance plus much better ozone and weather resistance, so it is preferred when outdoor exposure is part of the requirement.

What is the best gasket material for marine saltwater exposure?

EPDM and CR neoprene are both good choices. CR adds moderate oil resistance, which can be useful in engine compartments. EPDM is preferred for pure water and steam exposure.