Typical Properties of Style C41NBR Closed Cell Nitrile Sponge

Description: Style C41NBR closed cell Nitrile sponge is suitable for indoor and outdoor gasketing applications that require a service temperature of -40°F to 250°F. Closed cell Nitrile sponge offers excellent oil resistance and also has excellent UV resistance. C41NBR closed cell Nitrile sponge passes the flammability specification of FMVSS-302. C41NBR closed cell Nitrile sponge meets the physical property requirements of ASTM D 1056-67 SBE41.

Style C41NBR closed cell Nitrile, also known as closed cell Buna-N, is a soft density material, which is also available in a medium density (C42NBR) and a firm density (C43NBR). Style C41NBR can be supplied in rolls ranging from, as narrow at 1/4" wide, to a maximum width of 48". Atlantic Gasket has the ability to supply C41NBR with or without pressure sensitive adhesive. Style C41NBR Nitrile closed cell sponge can be die-cut or waterjet cut to your exact requirements.

Polymer
NITRILE BUTADIENE (NBR)

Specifications
ASTM D 1056-67 SBE41
ASTM D 1056-07 2B1
ASTM D 1056 Suffix’s F1, M

FLAMMABILITY SPECIFICATIONS
FMVSS-302 PASS

Physical Property Test Method Unit of Measure Result
Compression Deflection @25% ASTM D 1056 psi
kPa		 3.5 +/- 1.5
24.1 +/- 10.3
DENSITY ASTM D 1056 pcf
g/cm3		 7
.112
WATER ABSORPTION ASTM D 1056 % (MAX) 5
TENSILE STRENGTH (MIN) ASTM D 412
(DIE A)		 psi
kPa		 100
689.5
ELONGATION (MIN) ASTM D 412
(DIE A)		 % 175
SERVICE TEMPERATURE RANGE N/A °F
°C		 -40°F to 250°C
-40°F to 121°C
CD CHANGE AFTER OVEN AGING ASTM D 1056 % +/- 30
COLOR N/A N/A BLACK

Unique Features:
  • 100% pure Nitrile rubber closed cell sponge
  • Wide temperature range

This information is furnished as a guide for selecting materials. Atlantic Gasket Corp. disclaims liability for results or use of this information. It is the customer’s responsibility to obtain and test samples when determining suitability of material for a particular application.

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