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.
- 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 | |
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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.
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