Amerex Halotron O-Ring (Brass Valve) 13305 - OEM
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Wholesale PricingThe Amerex 13305 is the OEM collar o-ring for the brass valve assembly used on Amerex Halotron I portable extinguishers. Sold in a pack of 12, this seal is the collar o-ring replaced whenever the valve is disassembled during a scheduled internal maintenance service or following discharge when the unit is recharged. It seats between the valve body and the cylinder neck, forming the primary pressure seal that keeps the extinguisher charged between uses.
While Amerex makes both aluminum-valve and brass-valve Halotron I models, the collar o-rings are not interchangeable between the two valve types. This P/N 13305 is specific to the brass valve configuration. Amerex's service documentation is explicit that only OEM factory parts may be used during service, and that generic or substitute o-rings, even those labeled as compatible, do not meet UL component requirements and void the extinguisher's listing and warranty.
Compatible Models
This o-ring is designed for the brass valve Halotron I models: A384 (1.4 lb), B385 (2.5 lb), B386 (5 lb), B394 (5.5 lb), 397 (11 lb), and 397 (15.5 lb) in their brass-valved configurations.
| Feature | Details |
|---|---|
| Manufacturer | Amerex |
| Part Number | 13305 |
| Component Type | Collar O-Ring |
| Valve Type | Brass Valve |
| Agent Type | Halotron I |
| Pack Quantity | 12 |
| Compatible Models | A384, B385, B386, B394, 397 (11 lb and 15.5 lb) | Brass Valve Versions |
- Replace at Internal Maintenance or Recharge: Replace the collar o-ring whenever the valve is disassembled, which is required at the 6-year internal maintenance examination under NFPA 10 and following any discharge when the unit is recharged. Lightly lubricate the new o-ring with Visilox V-711 silicone grease before installation and clean the o-ring seating groove in the cylinder neck before seating.
- OEM Parts Only: Amerex explicitly voids the extinguisher's warranty and UL listing if non-OEM o-rings are used. Use only genuine Amerex P/N 13305 for brass valve Halotron I models.
- Confirm Valve Type: This part is for brass valve configurations only. Aluminum valve Halotron I models use a different collar o-ring (Amerex P/N 14268). Check the valve body material before ordering.
- Leak Check After Installation: After reassembly and recharge, verify no leaks exist at the valve orifice or collar seal using a halogen leak detector or appropriate detection solution.
How do I tell if my Halotron extinguisher has a brass or aluminum valve?
The valve body material is listed in the extinguisher's service manual and on Amerex's parts catalog under the specific model number. Visually, brass valves have a yellow-gold appearance while aluminum valves are silver-gray, though confirming against the model's documentation is the most reliable approach before ordering service parts.
Can I use the aluminum valve o-ring (14268) on a brass valve unit?
No. The two o-rings serve the same collar sealing function but are dimensioned for their respective valve types and are not interchangeable. Using the wrong o-ring risks an improper seal and potential pressure loss.
Why does Amerex require OEM o-rings specifically?
O-rings in fire extinguisher valves are UL component parts manufactured to exacting tolerances for the specific agent, pressure, and valve design. Generic substitutes may not meet those tolerances, and Amerex's service manuals note that non-OEM o-rings have been labeled as UL component parts in the aftermarket, an inaccurate claim that the manufacturer explicitly flags as a risk to the extinguisher's listing integrity.
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