2. Chemical Composition: Aerosol 101
• Aerosol is homogeneous blend of propellant and formula
• Formula types:
• Solvent
• Water
• Petroleum Distillate
• 96% Formula
• 4 % Propellant, CO2
• 134A, 152A, Hydrocarbons
Packaging Components
• Valve, dip tube, marble (heterogenous), BOV, actuator
3. Supplier Elastomer Options
Table 1: Materials by Supplier
Summit Precision
GASKET DIP TUBE GASKET DIP TUBE
36101.042 Buna 38301
Series
05-5110-51 BUNA B175 09-2010 PE
36202.042 Neoprene 05-5110-20 BUNA KA-6712 09-2050
MDPE
36155.042 Butyl 05-5130-19 NEOPRENE N-
200
09-35XX
PP
36251.042 Viton 05-5150-00 BUTYL U133
05-5160-00 VITON V-500
05-5110-27 B218
4. Gasket Selection
Table 3: Gasket Swell and Durometer Results
Material Type
Temperature Temperature
Room Temp
Swell %
120°F
Swell %
Trail 1 Trial 2 Trial 1 Trial 2
(1) BUNA B175 77 75 2.67 78 74 2.04
(2) BUNA KA-6712 75 69 4.88 75 66 3.94
(3) N-200 80 75 2.04 81 75 2.84
(4) BUTYL U133 77 68 23.11 78 62 23.98
(5) VITON V-500 79 63 7.99 80 66 7.69
(6) B218 80 75 4.72 80 78 3.77
F
a
c
t
o
r
1
5. Testing the Data
2 Factor ANOVA
Any outcome = overall mean + effect of gasket material + effect due to temperature + random noise
Gasket Material Temperature
7. Weight Loss Correlation
Positive Correlation
High X values & High Y Values
R= 0.89 for BUNA B175 Gasket
This is a good Model for
selecting a gasket
8. Conclusions
Durometer Hardness is not a good measure of chemical compatibility with
gasket material
Maybe with more data points, only used one type at 2 temperatures and 2
replicated of each
We looked at the weight loss over time to see correlation with gaskets selected
Good correlation and R value
