PM&I: Catalog of Extruded Rubber Fender: Rubber Compounds: EPDM and SBR: Black or Grey

PACIFIC MARINE & INDUSTRIAL

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Rubber Compound Specifications Pier Fender, Dock Fender, Industrial Fender

Black EPDM	Military Specification MIL-R-3065C, Mil Std 417, Type R, Class RS,
	Grade 720 A, B, C1, F2, Z1, Z2 and Z3

	ASTM Designation- D2000 3BA 720 A14, B13, C12, F19, Z1, Z2 and Z3

Black SBR	Military Specification MIL-R-3065C, Mil Std 417, Type R, Class RS,
	Grade 720 A, B, C1, F2, Z1, Z2 and Z3

	ASTM Designation- D2000 4AA 720 A13, B13, C12, EA14, F17, Z1 and Z2

Gray EPDM	ASTM Designation- D2000 3BA 710 A14, C12, F19, Z1, Z2, Z3 and Z4

Property	Test Method	Black EPDM	Black SBR	Gray EPDM
Min. Tensile Strength	ASTM D-412	2000 PSI	2000 PSI	1000 PSI

Min. Elongation	ASTM D-412	300%	300%	200%

Hardness-
Shore A Durometer	ASTM D-412	70 +/- 5	70 +/- 5	70 +/- 5

Modulus @
400% Elongation	ASTM D-412	900 PSI Min.	900 PSI Min.	300 PSI Min.

Heat Resistance	ASTM D-573
	A1470h @ 212 F
	A1370h @ 158 F
	Max. Change in Hardness	+ 10 Pts.	+ 10 Pts.	+ 10 Pts.
	Max. Change in Tensile	-25%	-25%	-25%
	Max Change in Ult. Elongation	-25%	-25%	-25%

Compression Set	ASTM D-395	25% Max	25% Max	50% Max
	Method B
	B13 & Z4 22h @158 F

Ozone Resistance	ASTM D-1171	No Cracks	No Cracks	No Cracks
	C12 100 F @ 50 pphm

Water Resistance	ASTM D-471	10% Max Swell	10% Max Swell	10% Max Swell
	EA14 70 h @ 212 F
	Z3 166 h @ 212 F

Low Temp. Brittleness	ASTM D-2137	Passes	Passes	Passes
	Method A, 9.3.2
	F17 Non brittle after
	3 min. @ -40 F
	F19 Non brittle after
	3 min. @ -67 F

Load Deflection	ASTM D-575	300 +/- 70 PSI	300 +/- 70 PSI	250 +/- 70 PSI
	Method A
	Z1 20% Deflection

Tear Resistance	ASTM D-624	200 PPI Min.	200 PPI Min.	150 PPI Min.
	Z2 Die B

SINCE 1985