Viton® Sheet Rubber Products

Performance Viton® Sheet Rubber

Viton® A: 66% Fluorine - Premium Grade Sheet

A broad range of resistance to oils, fuels, lubricants and most mineral acids. Very good resistance to many aliphatic hydrocarbon fluids that act as solvents for many other rubbers. Exceptionally good compression set resistance; even at temperatures that can degradate other non-fluorinated elastomers. Good resistance to atmospheric oxidation, sun, and weather. Excellent resistance to fungus and mold.

Finish: Smooth

Viton® B: 68% Fluorine - Premium Grade Sheet

Viton® B has greater resistance and retains flexibility better after dry heat aging than Viton® A. It is recommended for applications requiring maximum retention of elastic properties combined with good mechanical properties. Viton® B offers superior resistance to both diluted and concentrated aggressive acids.

Finish: Smooth

Viton® A: 66% Fluorine Military Specification Grade Sheet

WARCO BILTRITE is approved under the United States Government's QPL 83248–3.

Finish: Smooth

Viton® A: 66% Fluorine - Commercial Grade Sheet

This material exhibits a broad range of resistance to oils, fuels, lubricants and most mineral acids. It has very good resistance to many aliphatic hydrocarbon fluids that act as solvents for many other rubbers. Exceptionally good compression set attributes even at temperatures that can embrittle other non-fluorinated elastomers. It also exhibits good resistance to atmospheric oxidation, sun, and weather, and has excellent resistance to fungus and mold.

Finish: Smooth

Viton® B: 68% Fluorine - Commercial Grade Sheet

Viton® B has better resistance and retains flexibility better after dry heat aging than Viton® A. It is recommended for applications requiring maximum retention of elastic properties combined with good mechanical properties. Viton® B is specified by the FSA to resist sulfur dioxide in power generating factory systems and in addition offers superior resistance to both diluted and concentrated aggressive acids including sulfuric acid, nitric acid and hydrochloric acid.

Finish: Smooth

Viton® A: 66% Fluorine - FDA Grade Sheet

Perfect for food and lab applications where FDA compliance is required. Has good chemical resistance, high temperature properties and is resistant to corrosives.

Finish: Smooth

Miscellaneous Charts

DuPont Gasket Codes:
DuPont Engineering Standards U2A and SU2A

DuPont Code	Viton® Type	Compound Number	Durometer Hardness Shore A ± 5	Tensile PSI	Ultimate Elongation Percent	Temperature Range
S21/G21	A	60-F-3096	60	1500	200	-20°F to +450°F
S22/G22	A	75-F-3097	75	1500	180	-20°F to +450°F
S23/G23	B	60-F-4126	60	1500	200	-20°F to +450°F
S24/G24	B	75-F-4127	75	1600	200	-20°F to +450°F
S25/G25	GBL*	60-F-5128	60	2200	350	-20°F to +450°F
S26/G26	GBL*	75-F-5129	75	2200	300	-20°F to +450°F
S27/G27	GFLT*	60-F-5130	60	2100	200	-40°F to +450°F
S28/G28	GFLT*	75-F-5131	75	2200	180	-40°F to +450°F

Permeation Rates for Selected Elastomers
Average permeation for ASTM Standard (g x mm)(mm² x days)

Material	Fuel C at 23°C	90% Fuel C, 10% Ethanol	85% Fuel C, 15% Methanol	Taluene
NBR (33% CAN)	669	1028	1118
HNBR (44% CAN)	230	553	828
Fluorosilicone	455	584	635
Nylon 12*	5.5	24	83
Viton® GLT-S	2.6	14	60
Viton® AL	0.8	6.7	32
Viton® A	0.8	7.5	36	49
Viton® GFLT-S	1.8	6.5	14
Viton® B	0.7	4.1	12
Viton® GF-S	0.7	1.1	3.0

Heat Resistance Chart of Specialty Elastomers:
ASTM D 2000/SAE J200

Relative Chemical Compatibility and Mechanical Properties
for Viton® Fluoroelastomers

(KEY:   1 = Excellent     2 = Fair to Good     3 = Poor     4 = Not Recommended)

Chemical Environment	Viton® General Use Types					Viton® Specialty Types
	A	B	F	GBL-S	GF-S	GLT-S	GFLT-S	ETP-S
Automotive and aviation fuels	1	1	1	1	1	1	1	1
Automotive fuels oxygenated with MEOH, ETIH, MTBE, etc.	4	2	1	2	1	4	1	1
Engine lubricating oil, SE abd SF	2	1	1	1	1	1	1	1
Engine lubricating oil, SG abd SH	3	2	2	1	1	2	1	1
Alphatic hydrocarbon process fluids, chemicals	1	1	1	1	1	1	1	1
Aromatic fluids, steam mineral acids	2	2	1	1	1	2	1	1
Aqueous fluids, steam mineral acids	3	2	2	1	1	1	1	1
Strong base, high pH, caustic, aminos	4	4	4	2	2	2	2	1
Low molecular weight carbonyls 100% concentration (MTBB, MBK, MIBK, etc.)	4	4	4	4	4	4	4	1
Resistance to compression set	1	2	2	2	2	2	2	2
Low-temperature flexibility	2	2	3	2	3	1	1	2