FKM 26

Product Detail

Product description:

Fluoroelastomer FKM copolymer Gum-26 series are the copolymer of vinylidenefluoride and hexafluoropropylene, whose fluorine content is over 66%. After valcanizing process, the products have excellent mechanical performance, outstanding antioil property(fuels, synthetic oils, lubricating oils) and heat resistance, which can be used in the fields of modern aviation, rocket, missile, space flight, etc.

Execution standard: Q/0321DYS 005-2015

 

Quality specification:

Items		26	26M	268		26Y
Appearance		White or light yellow rubber piece		Light yellow or yellow rubber piece		White or light yellow rubber piece
Raw gum	Density	1.82±0.02
	Mooney viscosity	35-170	15-70	20-35		35-41
	ML(1+10) 121?
Cured rubber	Tensile strength, Mpa, =	12
	Elogation at break,%, =	175	180		160	170
	Hardness	76-81
Hot air aging (250?,70h)	Tensile strength	9
	Elogation at break,%, =	120
Compression Set (200?, 70h), %, =		15
Oil resistance(1#Oil,200?,24h), %, =		1
Note: The above vulcanization systems are bisphenol AF

 

Product use:

Widely used for manufacturing washers, gaskets, O-rings, V-rings, oil seals, diaphragms, rubber pipes, cable sheaths, heat insulation cloth, valve plates, expansion joints, rubber rolls, coatings and pasty room temperature vulcanization putties in occasions resisting high temperature, fuel(aviation gasoline, auto fuel), lubricating oil (synthetic oil), fluid (various non-polar solvents), corrosion (acid, alkali), strong oxidizer (oleum), ozone, radiation and weathering.

 

Cautions:

1.Fluorelastomer copolymer has good heat stability under 260?. It will generate trace decomposition if being put at 260-300? for a long time, and its decomposing speed accelerates at above 320?, the decomposition products are mainly toxic hydrogen fluoride and fluorocarbon organic compound. When raw fluorous rubber encounters fire, it will release toxic hydrogen fluoride and fluorocarbon organic compound.

2. Fluorous rubber cannot be mixed with metal powder such as aluminum powder and magnesium powder, or over 10% amine compound, if that happens, temperature will arise and several element will react with FKM, which will damage the equipment and operators.

 

Package, transportation and storage:

1. Fluorous rubber is packed in PE plastic bags, and then loaded into cartons, the net weight of each carton is 20kg.

2. Fluorous rubbers is stored in clean, dry and cool warehouse. It is transported according to non-dangerous chemicals, and should keep away from pollution source, sunshine and water during transportation.