Ansul K-Guard O-Ring #215 - 056909

The Ansul 056909 is the replacement #215 O-ring for Ansul K-Guard portable fire extinguishers. This O-ring ensures proper sealing of the valve components in the K-Guard series, maintaining pressure integrity throughout the extinguisher's service life. The #215 O-ring sits at a specific valve sealing position in the K-Guard valve assembly — the o ring 215 size designation corresponds to the AS568 standard O-ring size used at that location. A cracked, flattened, or compressed O-ring at this position causes a slow pressure leak that depletes the extinguisher's propellant charge between inspections.

The K-Guard is an ANSUL wet chemical portable fire extinguisher specifically designed for Class K cooking oil and grease fire protection in commercial kitchen environments — a companion to the ANSUL R-102 fixed kitchen fire suppression system for providing portable backup coverage at fryer stations and cooking lines. Like all portable fire extinguisher O-rings, the 056909 must be replaced at every internal examination per NFPA 10 — reusing an O-ring that has taken a compression set under years of extinguisher pressurization is a compliance violation that voids the extinguisher's UL listing.

For fire extinguisher service shops managing ANSUL K-Guard portable extinguisher fleets in commercial kitchen accounts, the 056909 is a standard line item in the K-Guard internal examination service kit. Keep it in van stock alongside ANSUL RedLine fill cap gaskets and operating components to ensure complete K-Guard service can be accomplished in a single visit without sourcing individual parts. Available through authorized ANSUL fire extinguisher parts suppliers and ansul distributors.

Replace the 056909 O-ring at every 6-year and 12-year internal examination of the Ansul K-Guard extinguisher per NFPA 10. Before installing the new O-ring, clean the valve groove thoroughly to remove any residue from the old seal. Apply a thin film of silicone-compatible O-ring lubricant before installation — never use petroleum-based lubricants on wet chemical extinguisher valve O-rings. Verify the O-ring seats fully in its groove with no twisting or pinching before reassembling the valve. Document the O-ring replacement in the fire extinguisher inspection and maintenance tags record.

Can I use a generic #215 O-ring from a hardware store?

No. The 056909 is formulated for compatibility with the wet chemical agent chemistry of the ANSUL K-Guard extinguisher. Generic #215 O-rings may not resist the alkaline wet chemical environment and can degrade prematurely, causing valve leaks between service intervals. Always use the 056909 OEM replacement from authorized ANSUL fire extinguisher parts suppliers to maintain the K-Guard's UL listing.