SPI Supplies is the source!

Braycote® Vacuum Greases

Elastomer compatibility data for the base fluid


Technical Report

Perfluoropolyether Lubricants

Elastomer Compatibility

The following elastomers were treated at 70°C for 166 hours:

Elastomer
Ultimate
Tensile
Stress
(%)
Ultimate
Elongation
(%)
Modulus
At 200%
(%)
Modulus
At 300%
(%)
Shore
Hardness
(%)
Volume
Change
(%)
Butadiene -
acrylonitrile
rubber (NBR)		 - 5 + 3 - 14 - - - - - - - 0.3
Butyl rubber
(IIR)		 + 7 + 12 - 10 - 7 + 0.7 + 1.5
Cloroprene
rubber (CR)		 + 14 + 18 - - - - - - 0 - 0.5
Ethylene-
propylene-
diens-
terpolymer
(EPDM)		 + 14 + 20 - 11 - 8 + 0.6 - 0.3
Fluorocarbon
rubber (FKM)		 + 5 0 + 2 + 5 + 5.2 + 0.3
Natural rubber
(NR)		 + 6 + 25 - 20 - 15 - 3.9 + 2.0
Polybutadiene
cis rubber
(BR) 		- 17 + 7 - 21 - - - - 4.5 + 8.0
Styrene
butadiene
rubber (SBR)		 + 4 + 38 - 38 - 36 - 3 + 0.8

Elastomer Compatibility



Compounds
Conditions
Results
Aflas 7 ASTM D471-79
150EC @ 500 hrs.		 Tensile = - 10.4%
Elongation = 1.4%
Volume change = - 14.7%
DOW 236 ASTM D 471-79
200EC @ 500 hrs. 		Change in weight = - 5.4%
The material hardened, changed
color from white to brown and
leeched brownish particulate &
globules into the fluid.
EPDM ASTM D471-79
150EC @ 500 hrs. 		Some leeching into fluid.
Compatibility questionable.
Fluorosilicone
60 Duro (XL 2113)		 ASTM D471-79
150EC @ 575 hrs. 		Change in tensile = - 12%
Volume cha nge = - 0.1%
Change in elongation = - 11.5%
Fluorosilicone
70 Duro (XL 2114) 		ASTM D471-79
150EC @ 500 hrs. 		Change in tensile = - 12.5%
Volume change = - 3.5%
Change in elongation = - 17%
Loctite PST (sealant) ASTM D1384-94
150EC @ 336 hrs.
150 ml/min air flow 		Appears compatible. No leeching of
sealant into fluid.
Loctite 7 Ultra Blue (silicone) 125EC @ 100 hrs. Volume change = - 2.6%
Weight change = - 0.2%
Silicone RTV (DOW) rubber 125EC @ 100 hrs. Volume change = - 2.7%
Weight change = - 0.5%
Tecnoflon® FOR 5351 U ASTM D 471-79
150EC @ 100 hrs. 		Tensile = 1%
Elongation = - 1%
Volume Change = 3%
Tecnoflon® P 819 ASTM D 471-79
150EC @ 500 hrs. 		Tensile = 2%
Elongation = - 7%
Volume Change = 11%
Tecnoflon® FOR 439 ASTM D 471-79
150EC @ 500 hrs. 		Tensile = - 13%
Elongation = - 4%
Volume Change = 9%
Tecnoflon® P-710 ASTM D 4 71-79
150EC @ 500 hrs. 		Tensile = - 9.3%
Elongation =
Volume Change = 4.3%
Tecnoflon® 5351 ASTM D 471-79
200EC @ 500 hrs. 		Tensile = - 4.7%
Elongation = 3.9%
Volume Change = 8.5%
Viton® fluoroelastomer A Gasket
(GASKET NOT 100% VITON A)		 ASTM D 471-79
150EC @ 500 hrs. 		0.32% volume swell
Gasket left a lot of filler
Not compatible
Viton® fluoroelastomer V115 (TEC V12)
International Seals		 ASTM D 471-79
150EC @ 850 hrs. 		Volume change = 3.4%
Weight change = 5.5%
Change in Hardness = 0.9%
Tensile change = - 8%
Elongation change = 4.1%

To Ask a Question or Make a Comment

To Place an Order or Request a Quote

Return to:
Wednesday July 09, 2008
© Copyright 2004 - 2008. By Structure Probe, Inc.
Contacting SPI Supplies and Structure Probe, Inc.
All rights reserved.
All trademarks and trade names are the property of their respective owners.
Privacy Policy

Worldwide Distributors, Representatives, and Agents Flag logo