Tri-Clamp BUNA-N (Viton) Gasket
Buna-N Tri-Clamp gaskets are the preferred choice of material when using a closed loop, closed column, or open blast extraction when butane or propane are used as the extraction solvent. Buna-N Gaskets offer a lower temperature rating and have better physical properties than Viton gaskets and the best part is that they are also cheaper than Viton and provide the same chemical resistance to butane and propane.
- Lower Temperature Range
- Lower Costs
- Better Compressibility and Springiness
- Excellent Resistance to Butane and Propane
- Better Tear Resistance
- Better Abrasion Resistance
|Conformance||FDA Compliant / Meets 3A Standards|
|-Low Temperature Range||-70°F|
|-Minimum for Continous Use (Static)||-40°F|
|-High Temperature Range||+210°F to +250°F|
|-Maximum for Continuous Use (Static)||+250°F|
|Durometer or Hardness Range||65 Shore A|
|Tensile Strength Range||200-3500PSI|
|Elongation Range (%)||350-650%|
|Resilience / Rebound||Good|
|Butane||A - Excellent|
|Propane (liquified)||A - Excellent|
|-Amyl||B - Good|
|-Benzyl||D - Severe Effect|
|-Butyl||C - Fair|
|-Diacetone||D - Severe Effect|
|-Ethyl||C - Fair|
|-Hexyl||A - Excellent|
|-Isobutyl||B - Good|
|-Isopropyl||B - Good|
|-Methyl||A - Excellent|
|-Octyl||B - Good|
|-Propyl||A - Excellent|
Disclaimer: LeDAB recommends no more than a -40F Operating Temperature and is not responsible for the user running their system with incompatible chemicals.
Note: BUNA-N is not recommended for use with certain alcohols.
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Great quality gaskets. Will purchase again!
For closed loop extractors it is the best and easiest gasket to use. Easy on lip ensures the gasket gets properly seated flush, level and in contact with all points to create a perfect seal. Highly recommended.
Highly recommended for closed loop extractors