novaphit® VS

novaphit® VS is a thermally expanded graphite material without metal reinforcement. In comparison with other similar products of unreinforced graphite materials, it has high mechanical strength. Has good sealing properties.

Applicable:

- at high thermal and mechanical loads, also at frequent load changes;
- saturated and superheated steam, heat-conducting oils;
- widely used in aggressive environments.

This material allows the production of pads with a narrow width of margins.

 Specifications:

Indicators	Rate
Density, g/cm3	1,3
Compressibility,%, not less than	15
Recoverability,%, not less than	15
Ultimate tensile strength lengthwise, MPa, not less than	6
Tensile strength broadwise, MPa, not less than	5
Maximum allowable pressure, MPa (kgf / cm2, bar)	6,5 (65)
Temperature range, оС	from -240 to +550
Thickness, mm	0,5 / 1,0 / 1,5 / 2,0
Sheet dimensions, mm	1000х1000 / 1500 х1500

 At the request of the customer, it is possible to supply the gasket material of other sizes. We can produce gaskets from novaphit® VS material according to GOST, DIN EN or customer's drawings in any quantities.

General information	Binding material: Tolerances: Non-stick coating: Identification color: Dimensional tolerances:	- - No coating (graphite) black according to DIN 28 091-1 standards
Physical characteristics (sample thickness 2.00 mm)	Name of indicators	Tech.documentation	Name of indicator	Tech.documentation
	Name	DIN 28 091-4	Indicator	DIN 28 091-4
	Density	DIN 28 090-2	Broadwise	DIN 28 090-2
	Tensile strength	DIN 52 910	Tensile strength	DIN 52 910
	Lengthwise		Lengthwise
	Broadwise		Broadwise поперёк
	Compressive strength sdE/16	DIN 52 913	Compressive strength sdE/16	DIN 52 913
	175°C
	300°C
	Recoveribility	ASTM F 36 J	[%]	18
	Cold shrinkage ratio eKSW	DIN 28 090-2	[%]	35,0
	Cold volume recovery ratio eKRW	DIN 28 090-2	[%]	5,0
	Shrinkage ratio at 200°C eWSW/200	DIN 28 090-2	[%]	1,0
	Recovery ratio eWRW/200	DIN 28 090-2	[%]	4,0
	Recoveribility R	DIN 3535-6	[mg/(m•s)]	≤ 0,100
	Specific gas permeability l2,0	DIN 28 090-2	[mg/(m•s)]	0,050
	Resistance to the environment	ASTM F 146
	ASTM IRM903	5hour./150°C
	Weight change		[%]	30
	Change in thickness		[%]	6
	ASTM Fuel B	5hour./23°C
	Weight change		[%]	30
	Change in thickness		[%]	6
	Chloride content	DIN 28 090-2	[ppm]		≤ 50

The above technical data was obtained in laboratory conditions using standard materials. The guarantee of the functionality of the gasket joints cannot be fully ensured due to differences in installation and production conditions. We reserve the right to change materials if this will serve to further technical development.

Installation instructions for segmental gaskets.

The assembly of gasket must be done directly on the flange. When opening the packaging and installing the gasket, it is important not to damage the connection elements (push-button / dovetail).

Segments of the gasket are stacked alternately and connected to the flange. After assembly and alignment of the gasket, Novaphit VS self-adhesive squares with a thickness of 0.35 ... 0.5 mm are glued to the junction of the segments, according to the sketch.

For the convenience of installing and assembling of the gasket, you can use special double-sided tape (included). The adhesive tape is glued in small squares to the gasket, and then glued to the flange. This method of installation is used for mounting of gaskets on a vertical flange, but it is possible to use adhesive tape with a horizontal flange as well