Black natural rubber gaskets are cut from rubber sheets or mould pressing. Any sizes and shapes can be produced. The hardness of natural rubber gasket ranges from 40 to 60 durometer, Shore A. Die cut natural rubber gaskets are generally tan or black in color with the exception of our premium grade “red” gum natural rubber, which is used when an optimum combination of tear and abrasion resistance are required. Natural rubber gaskets are available with or without pressure sensitive adhesive backing.
Style KXT 1700N Pure Natural Rubber Gasket
Black natural rubber gaskets provide superior dynamic sealing. They have a low level of damping and good low temperature properties,
and mate well with metal surfaces. Natural rubber (NR) seals also resist tear and abrasion, and can resist shear and compression
for long periods in the absence of tension
Advantages:
• Have good resistance to moderate chemicals, dry organic acids
• Excellent water resistant and tear resistant
• Good abrasion resistance, high elasticity
• High tensile strength
• High elongation
• Good recovery., etc
Application:
• Alcohols, ketones and aldehydes
• Moderate chemical industries
• Wet or dry organic acids
• Weak acid and alkali
• Chemical tubing
• Shock absorber
• Ammonia., etc
Natural rubber Properties
Item |
Natural rubber |
Test Method |
Color |
black |
- |
Specific gravity |
1.4g/cm3 |
ASTM D297 |
Hardness |
40°-80° Shore A |
ASTM D2240 |
Tensile strength |
18 MPa (min) |
ASTM D412 |
Elongation at break |
500 % (min) |
ASTM D412 |
Size |
Normal or custom |
- |
Tear strength |
15 N/mm |
ASTM D 624 |
Low temperature resistance |
-40°C |
ASTM D1329 |
Temperature range |
-40°C to +70°C |
ASTM D2000 |
Key: = Excellent ,
= Good,
= Fair, X = Not Recommende