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.
FDA CFR 177.2600 – Rubber and Rubber-Like Material for Repeated Use/Contact with Food.
FDA CFR 177.1550 – Fluorocarbon Resins for Repeated Use/Contact With Food, Dairy & Pharmaceutical Products.
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.
BUNA-N Tri-Clamp Gaskets (Made in USA, FDA Compliant / Meets 3A Standards)
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.
FDA CFR 177.2600 – Rubber and Rubber-Like Material for Repeated Use/Contact with Food.
FDA CFR 177.1550 – Fluorocarbon Resins for Repeated Use/Contact With Food, Dairy & Pharmaceutical Products.
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.
