Plastic Properties
|
Polyethylene
|
|
|
|
Vinyl
| ||||
|---|---|---|---|---|---|---|---|---|
|
Properties
|
Low Density
|
Medium Density
|
High Density
|
Polypropylene
|
Ethylene Vinyl Acetate
|
Thermoplastic Rubber
|
Standard
|
High Temp.
|
|
Specific Gravity
|
0.910-0.925
|
0.926-0.940
|
0.941-0.965
|
0.902-0.906
|
0.931-0.933
|
0.94
|
0.98-2.0
|
1.22-1.32
|
|
Tensile Strength P.S.I.
|
600-2300
|
1200-3500
|
3100-5500
|
4300-5500
|
1700-2000
|
2750
|
50-5000
|
2175mm
|
|
Elongation %
|
90-800
|
50-600
|
15-100
|
200-700
|
700-800
|
600
|
50-550
|
175mm
|
|
Compressive Strength P.S.I.
|
—
|
—
|
3200
|
5500-8000
|
—
|
—
|
—
|
—
|
|
Flexural Stength P.S.I.
|
—
|
4800-7000
|
1000
|
6000-8000
|
—
|
—
|
—
|
—
|
|
Specific Heat Cal/C/gm
|
0.55
|
0.55
|
0.55
|
0.46
|
0.55
|
—
|
—
|
—
|
|
Resistance To Heat °F
|
180-200
|
220-250
|
250
|
250-320
|
160-185
|
300
|
300-325
|
450
|
|
Heat Distortion Temperature °F
|
100-121 (66 P.S.I.)
|
120-165 (66 P.S.I.)
|
140-180 (66 P.S.I.)
|
205-230 (66 P.S.I.)
|
95-105
|
—
|
—
|
—
|
|
Water Absorption %24 hr. 1/8" Thickness
|
<0.01
|
0.01
|
0.01
|
0.01
|
0.005-0.13
|
—
|
—
|
—
|
|
Effect of Sunlight
|
Crazes rapidly unless black colour or ultraviolet inhibitor is used
|
Crazes rapidly unless black colour or ultraviolet inhibitor is used
|
Crazes rapidly unless black colour or ultraviolet inhibitor is used
|
Crazes Rapidly
|
Crazes rapidly unless black colour or ultraviolet inhibitor is used
|
Excellent Ozone Resistance
|
Excellent Ozone Resistance
|
Good Ozone Resistance
|
|
Effect of Weak Acids
|
Resistant
|
Very Resistant
|
Very Resistant
|
None
|
Resistant
|
Resistant
|
Resistant
|
Resistant
|
|
Effect of Strong Acids
|
Attacked by Oxidizing Acid
|
Attacked by Slowly Oxidizing Acids
|
Attacked by Slowly Oxidizing Acids
|
Attacked by Oxidizing Acid
|
Attacked by Oxidizing Acid
|
Resistant
|
Fair Resistance
|
Fair Resistance
|
|
Effect of Weak Alkalies
|
Resistant
|
Very Resistant
|
Very Resistant
|
None
|
Resistant
|
Resistant
|
Resistant
|
Fair
|
|
Effect of Strong Alkalies
|
Resistant
|
Very Resistant
|
Very Resistant
|
Very Resistant
|
Resistant
|
Resistant
|
Fair Resistance
|
Poor
|
|
Effect of Organic Solvents
|
Resistant Below 60°C
|
Resistant Below 60°C
|
Resistant Below 80°C
|
Resistant Below 80°C
|
Resistant Below 50°C
|
Resistant
|
Fair Resistance
|
Poor
|
|
Effect of Oils and Greases
|
Attacked by Some
|
Attacked by Some
|
Slight
|
Attacked by Some
|
Attacked by Some
|
Somewhat Resistant*
|
Fair Resistance
|
Poor
|
|
Impact Strength ft./ lb./ ln Notch
|
No Break
|
0.5-16
|
1.5-20
|
0.4
|
No Break
|
No Break
|
—
|
—
|
ASTM test methods apply. Caplugs cannot be held responsible for the accuracy of these figures.
* = Hydrocarbons will cause thermoplastic rubber to swell if soaked; it will not affect the properties. It is resistant if only splashed with hydrocarbons.
Tolerances on Injection Moulded Parts:
- Tolerances on all decimal dimensions ±0.010 per inch.
Example: 1.000 ±0.010 = 0.010"
Example: 2.500 ±0.010 per inch = 0.025" - Tolerance for fractional dimensions ±1/32" per inch.
Tolerances for Vinyl Dip Moulded Parts:
- Round Part Inside Diameter ±0.005"
Part Inside Length ±0.063"
Part Wall Thickness ±0.010"
Rubber Properties
|
Compounds
|
Silicone
|
EPDM
|
Neoprene
|
NR
|
NBR
|
SBR
|
Viton
|
Hypalon
|
|---|---|---|---|---|---|---|---|---|
|
Properties
|
|
|
|
|
|
|
|
|
|
Hardness (Shore A)
|
25-80
|
40-80
|
40-90
|
30-90
|
40-90
|
40-90
|
50-80
|
40-80
|
|
Temperature Range °C
|
-100 ~ 315
|
-37.2 ~ 121.1
|
-45.6 ~ 126.7
|
-42.7 ~ 98.8
|
-40 ~ 101.7
|
-42.6 ~ 101.7
|
-40 ~ 260
|
-37.2 ~ 121.7
|
|
Max Tensile Strength (Mpa)
|
14
|
17.6-21
|
17.6-21
|
24.6-28.2
|
7.0-24.6
|
14-17
|
14
|
21
|
|
Max Elongation %
|
300-600
|
500-800
|
600-800
|
500-600
|
500-600
|
300-500
|
300
|
500
|
|
Resilience
|
E
|
G
|
G
|
E
|
F-G
|
G
|
P
|
P
|
|
Abrasion
|
P
|
G
|
G
|
E
|
G
|
G
|
G
|
P
|
|
Tear Resistance
|
P
|
G
|
G
|
E
|
F
|
F
|
F
|
F
|
|
Electrical Insulation
|
E
|
E
|
F
|
E
|
P
|
G
|
G
|
G
|
|
Flame Resistance
|
G
|
P
|
E
|
P
|
P
|
P
|
G
|
G
|
|
Ozone Resistance
|
E
|
E
|
E
|
P
|
F
|
F
|
E
|
E
|
|
UV Resistance
|
E
|
E
|
G
|
G
|
G
|
F
|
E
|
E
|
|
Moisture Resistance
|
G
|
E
|
G
|
G
|
F
|
G
|
E
|
G
|
|
Acid Resistance
|
P
|
G
|
G
|
F
|
G
|
F
|
E
|
E
|
|
Solvent Resistance
|
P
|
F
|
G
|
P
|
P
|
P
|
E
|
G
|
|
Oil Resistance
|
F
|
P
|
G
|
P
|
E
|
P
|
E
|
G
|
P = POOR, F = FAIR, G = GOOD, E = EXCELLENT. The above information is offered as a guide only.
