Black Plastic Spacer Washers , Durable Insulated Round Spacer
Bushings
Round spacer with full hole and is made from ABS used to electric
parts for insulation on electricity ,heat and fixing distance
between two parts .
Material
Plastic round spacer bushings are made of ABS
Key features
Insulated material
Resistance to fire
Not easy to be aged
Water proof
Wear resistant
Performances
Physical Performance
| Density ( g/cm3) | 1.1 |
| Water absorption % (23°C, 24 hr) | 0.3 |
| Shrinkage % | 0.5 |
Mechanical Property
| Tensile strength Mpa | 61 |
| Elongation at break % | 10～15 |
| Bending strength MPa | 79 |
| Modulus of elasticity MPa | 2000 |
| Modulus of bending KSI | 300 |
| Notched Impact Strength(kg/cm2) | 18 |
| HR hardness | 116 |
| Modulus of elasticity for tension MPa ( 23℃) | 2300 |
Thermal Performance
| Specific volume resistance Ω·cm | 15 |
| Thermal conductivity BTU-in/hr-ft2-°F | 1.1 |
| Distortion temperature ( 1.8 Mpa ) -°F | 195 |
| Normal working temperature ℃ | -40～100 |
| Brittle temperature ℃ | -60 |
| Melting temperature ℃ | 217~237 |
| Pyrogenic decomposition temperature ℃ | 250 |
| Dielectric constant | 2.7～3.2 |
Specification
| Outer diameter D1 | 9 |
| Inner diameter D2 | 5 |
| Length L | 10 |
| Tolerance | ±0.1 |
Unit : mm
Tolerances
| Normal Sizes | Level |
| TG7 |
| W | NW |
| 1-3 | 0.13 | 0.2 |
| 3-6 | 0.2 | 0.29 |
| 6-10 | 0.29 | 0.35 |
| 10-18 | 0.35 | 0.42 |
| 18-30 | 0.42 | 0.5 |
| 30-50 | 0.5 | 0.6 |
| 50-80 | 0.6 | 0.9 |
1 ,value for each level means " ± " tolerance .
2 , " W " means tool specific dimensions , " NW ' means non tool
specific dimensions .
Characteristics
Perfect insulation
ABS round spacer bushings can be operated in the most surroundings
conditions and are effected by temperature , moisture and use
frequency .
Corrosion resistance
ABS round spacer bushings are available for water ,mineral salt
,alkali and acid .
Water proof
Water absorption is below 1%
Fire resistance
Fire resistance level is UL94V-2
Stable chemical performance
Heat proof
Melting temperature is 217~237℃
Resistance to wear
Oils proof
Wide temperature
ABS round spacer bushings can be worked in -40~100℃
