A.  SCOPE:  FIBRE-KORK is a composition cork and fibre glue-glycerine impregnant gasket material manufactured and 
tested to the below-listed specifications.  FIBRE-KORK consists of a special base fibre containing 40% granulated cork 
particles by volume. FIBRE-KORK is saturated with a glue-glycerine-formaldehyde impregnant which makes the sheet impervious 
to oil, water and gasoline.  The incorporation of the cork with the fibre makes FIBRE-KORK a soft compressible material 
adaptable for gasket application with low internal pressures.

B.  CERTIFICATION:  FIBRE-KORK is certified to meet the following specifications:
MIL-G-12803A				Ident. No. P3415A
MIL-G-128030B & MIL-G-12803C		Ident. No. F328148M4
ASTM D 1170 and SAE J90			Ident. No. P3415A
ASTM F 104 and SAE J90			Ident. No. F328148-E41-M4

C.  PHYSICAL CHARACTERISTICS:
Fibre (60% by volume) and Cork (40% by volume)	45% to 55%
Moisture					6% to 10%
Chemical Solids					35% to 45%

D.  CONDITIONING:  All samples conditioned prior to testing as specified by applicable application--usually 50% RH -70 
to 85o F for a period of 22 or 24 hours.


E.  STANDARDS:  (Using American Society of Testing Materials Specification ASTM F 104 prepared jointly with the Society 
of Automotive Engineers and similar in requirements to MIL-G-12803C.

	ORIGINAL	Test Load			1000 p.s.i. min.
	PHYSICAL	Compressibility			40% to 55%
	PROPERTIES	Tensile Strength		1000 p.s.i. min.

	PHYSICAL	Fuel B--Thickness increase	5% maximum (Not Applicable to MIL-G-12803C)
	PROPERTIES	#3 Oil--Thickness increase	5% maximum
	AFTER		Fuel B--Weight increase		30% maximum (Not Applicable to MIL-G-12803C)
	IMPRESSION	#3 Oil--Weight increase		30% maximum
			Water--Weight increase		100% maximum

F.  THICKNESS TOLERANCES:

			Thickness			Plus or Minus
			.006", .010" and .015"			.0035"
			.021", .031", .046" and .062"		.005"
			.096" (3/32")				.008"
			.125" (1/8") and up			.016"

G.  FLEXIBILITY:  FIBRE-KORK is capable of withstanding bending around a rod with a diameter of twice the thickness 
of the material under test, without cracking, breaking, or excessive marring of the surfaces.


H.  TEMPERATURE LIMIT:				250o F