Rubber Extrusion, Viton, Silicone, Neoprene, EPDM, BunaN, Sponge Rubber

VITON EXTRUSION

Viton® consists of essentially several standard and specialty types of polymers based on their composition and flourine content.

The types differ primarily in the end-use performance of parts made from Viton®. Each type differs in its ability to: resist permeation and volume increase, resist attack and property degradation caused by the chemicals and fluids.

Standard and Specialty Types of Viton®	Principal Applications
A, AL, GAL-S, GLT-S	General purpose sealing: Automotive, Aerospace fuels & lubricants
B, BL, GBL-S, GBLT-S	Chemical processing, power, utilities. Seals & Gaskets
F, GF-S, GFLT-S	Oxygenated automotive fuels, concentrated aqueous inorganic acids, water and steam
TBR-S	Automotive & Off-Road (High pH requirements)
ETP-S	Oil Exploration/Production Special sealing requirements for harsh environments

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The latest types of Viton® made with Advanced Polymer Architecture (APA) are indicated by an 'S'.

The choice of the most appropriate type of Viton® to use for any given end-use application will be determined by the end-use service, and in particular, whether the finished part must provide:

Resistance to amines or caustics
Resistance to hydrocarbon fluids
Flexibility at low temperature (ability to maintain a seal at low temperature)

The end-use performance capability of the various types of Viton® differ primarily in terms of these three factors.

End-use service differences between Types of Viton®
Standard and Speciality Types	Low Temp. Flexibility TR-10, °C	Compression Set, O-rings 70 h/200°C, %	Fluid Resistance				Base Resistance
			% Volume Increase after 168 h				% loss of elongation at break
			Toluene at 40°C	Fuel C/MeOH (85/15) at 23°C	Methanol at 23°C	Concentrated H₂SO₄ at 70°C	33% solution of KOH 336h/40°C	ASTM Ref. Oil 105 500h/150°C
AL	-19	20-25	20-25	35-40	85-95	12-15	-50	-80
A	-17	12-17	20-25	35-40	85-95	10-12	-45	-80
BL, GBL-S	-15	25-40	12-15	20-25	25-35	3-5	-25	-65
B	-13	25-30	12-15	18-23	25-35	8-10	-25	-70
ETP-S	-11	45-50	6-8	8-10	1-2	4-6	0	-10
GFLT-S	-24	35-40	8-12	10-15	3-5	3-5	-30	-40
GBLT-S	-26	35-40	12-15	27-32	25-35	3-5	-40	-50
F	-8	30-45	8-12	5-10	3-5	7-9	-50	-55
GF-S	-8	30-45	8-12	5-10	3-5	7-9	-45	-50
TBR-S	+3	45-50	60-65	80-90	-	3-5	-10	-20

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VITON EXTRUSION

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End-use service differences between Types of Viton®