Material Specifications

Material Specifications

Plastic Properties

 
Polyethylene
 
 
 
Vinyl
Properites
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. Caps'n Plugs 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.