BUNA-N Tri-Clamp Gaskets
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; the best part is that they cost less than Viton and provide the same chemical resistance to butane and propane.
Note: BUNA-N is not recommended for use with certain alcohols
Key Features:
- Lower temperature range
- Lower costs
- Better compressibility and springiness
- Excellent resistance to butane and propane
- Better tear resistance
- Better abrasion resistance
Sizes Available:
- 1.5"
- 2"
- 3"
- 4"
- 6"
- 8" - easy on flanged
- 10" - easy on flanged
- 12" - easy on flanged
Technical Specifications: |
Material |
BUNA-N (Nitrile) |
Color |
Black |
Connection Type |
Tri-Clamp |
Conformance |
FDA Compliant / Meets 3A Standards |
Thermal Properties: |
-Low Temperature Range |
-70°F |
-Minimum for Continuous Use (Static) |
-40°F |
-Brittle Point |
-70°F |
-High Temperature Range |
+210°F to +250°F |
-Maximum for Continuous Use (Static) |
+250°F |
Gas Permeability |
Excellent |
Durometer or Hardness Range |
65 Shore A |
Tensile Strength Range |
200-3500PSI |
Elongation Range (%) |
350-650% |
Abrasion Resistance |
Excellent |
Tear Resistance |
Excellent |
Resilience / Rebound |
Good |
Thread Style |
Female |
Chemical Compatibility: |
Butane |
A - Excellent |
Propane (liquified) |
A - Excellent |
Alcohols: |
-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 |
-Isopropyl |
B - Good |
-Methyl |
A - Excellent |
-Octyl |
B - Good |
-Propyl |
A - Excellent |
No more than a -40 F operating temperature should be used with BUNA-N.
BVV is not responsible if incompatible chemicals, solvents, or operating temperatures are used in the user's system.