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O-Rings

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OR39 O-RINGS (SOLD IN 50 PACKS)OR29-NFS O-RINGS FOR AMEREX & BADGER FIRE EXTINGUISHER (SOLD IN 100 PACKS)340037K KIDDE O-RINGS FOR FIRE EXTINGUISHER PARTS LARGE (SOLD IN 50 PACKS)OR21-NFS O-RINGS FOR FIRE EXTINGUISHERS (SOLD IN 100 PACKS)OR27-NFS O-RINGS FOR AMEREX & BADGER (SOLD IN 100 PACKS)OR37-NFS O-RINGS FOR BUCKEYE FIRE EXTINGUISHER (SOLD IN 100 PACKS)QR40-NFS ANSUL QUAD RINGS FOR LARGE VALVE – 50 PACKQR41-NFS ANSUL O-RINGS QUAD RINGS FOR LARGE VALVE – 50 PACKOR28-NFS ANSUL O-RINGS (SOLD IN 100 PACKS)340036K-NFS KIDDE O-RINGS (340035) – 50 PACKOR20 O-RINGS FOR FIRE EXTINGUISHERS (SOLD IN 100 PACKS)NFS-439848 AFTERMARKET O-RINGS FOR UPDATED STYLE ANSUL NOZZLES551530 PYRO CHEM NOZZLE O-RINGS (10 PACK)195OR O-RINGS FOR GENERAL TYPES OF FIRE EXTINGUISHERS (SOLD IN PACKS OF 100)3380 VALVE STEM SEALS FOR AMEREX 6092259535K O-RINGS FOR KIDDE GAUGE (SOLD IN PACKS OF 100)181AC-NFS GASKET CARTRIDGE RECEIVER FOR ANSUL CART TOP5239 AMEREX QUAD RING FOR REBUILD KIT55531 PYRO CHEM O-RING FOR 16G CARTRIDGEOR10-NFS AMEREX HOSE O-RING 6978OR8-NFS AMEREX HOSE O-RING 1532OR26 O-RING (SOLD IN PACKS OF 100)3390 VALVE STEM SEALS FOR AMEREX 6093OR295 O-RING FOR ANSUL, KIDDE & BADGER CO2 CYLINDER – 100 PACK14268 AMEREX HALOTRON ORING ALUMINUM05240 AMEREX ORING FOR WHEELED UNITS13305 HALOTRON ORING FOR AMEREX (BRASS VALVE)6190AC ANSUL GASKET FOR REDLINE CART OP EXTINGUISHERSORKIT ORING KIT005151 ANSUL ORING FOR REDLINE EXTINGUISHER23074 BADGER HALOTRON O RING 5#AD-36 O-RING VICORING2.5/5 – VICTORY ORING FOR 2.5 & 5 LB EXTINGUISHERS

Category Other
Category Exclusive Customer Sale Items
Category Amerex
Category Amerex KP
Category Ansul Fire Safety Products
Category Black Pipe Fittings
Category Buckeye
Category Chrome Fittings
Category Evergreen Quik Seals
Category Fire Alarm System Parts
Category Fire Equipment Gauges
Category Fire Extinguisher Cabinets
Category Fire Extinguisher Covers
Category Fire Extinguisher Hooks
Category Fire Extinguisher Pull Pins
Category Fire Extinguishers
Category Fire Hoses
Category Globe Fusible Links
Category Hole Punches
Category Hose Straps and Clips
Category Hydro Test/Recharge Adapters
Category Lehavot
Category Miscellaneous Parts
Category Nitrogen
Category O-Rings
Category Pyro Chem System Parts
Category Range Guard System Parts
Category Service Verification Collars
Category Signs
Category Sprinkler Parts
Category System Components
Category Tamper Seals
Category Valve Stems
Category Vehicle Brackets

Showing 1–15 of 33 resultsSorted by popularity



Product Categories

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  • OR27-NFS O-RINGS FOR AMEREX & BADGER (SOLD IN 100 PACKS)

    OR27-NFS O-RINGS FOR AMEREX & BADGER (SOLD IN 100 PACKS)

    Rated 5.00 out of 5

    $0.14

    Brands: Amerex, Badger

    Add to cart

  • OR37-NFS O-RINGS FOR BUCKEYE FIRE EXTINGUISHER (SOLD IN 100 PACKS)

    OR37-NFS O-RINGS FOR BUCKEYE FIRE EXTINGUISHER (SOLD IN 100 PACKS)

    Rated 5.00 out of 5

    $0.14

    Brands: Buckeye

    Add to cart

  • OR28-NFS ANSUL O-RINGS (SOLD IN 100 PACKS)

    OR28-NFS ANSUL O-RINGS (SOLD IN 100 PACKS)

    Rated 5.00 out of 5

    $0.14

    Brands: Ansul

    Add to cart

  • 340036K-NFS KIDDE O-RINGS (340035) - 50 PACK

    340036K-NFS KIDDE O-RINGS (340035) – 50 PACK

    Rated 5.00 out of 5

    $32.50

    Brands: Kidde

    Add to cart

  • OR29-NFS O-RINGS FOR AMEREX & BADGER FIRE EXTINGUISHER (SOLD IN 100 PACKS)

    OR29-NFS O-RINGS FOR AMEREX & BADGER FIRE EXTINGUISHER (SOLD IN 100 PACKS)

    Rated 5.00 out of 5

    $0.14

    Brands: Amerex, Badger

    Add to cart

  • QR40-NFS ANSUL QUAD RINGS FOR LARGE VALVE - 50 PACK

    QR40-NFS ANSUL QUAD RINGS FOR LARGE VALVE – 50 PACK

    $20.00

    Brands: Generic

    Add to cart

  • QR41-NFS ANSUL O-RINGS QUAD RINGS FOR LARGE VALVE - 50 PACK

    QR41-NFS ANSUL O-RINGS QUAD RINGS FOR LARGE VALVE – 50 PACK

    $15.00

    Brands: Ansul

    Add to cart

  • OR20 O-RINGS FOR FIRE EXTINGUISHERS (SOLD IN 100 PACKS)

    OR20 O-RINGS FOR FIRE EXTINGUISHERS (SOLD IN 100 PACKS)

    $0.14

    Brands: Buckeye, Generic

    Add to cart

  • OR21-NFS O-RINGS FOR FIRE EXTINGUISHERS (SOLD IN 100 PACKS)

    OR21-NFS O-RINGS FOR FIRE EXTINGUISHERS (SOLD IN 100 PACKS)

    Rated 5.00 out of 5

    $0.14

    Brands: Generic, Kidde

    Add to cart

  • 3380 VALVE STEM SEALS FOR AMEREX 6092

    3380 VALVE STEM SEALS FOR AMEREX 6092

    $0.95

    Brands: Amerex

    Add to cart

  • NFS-439848 AFTERMARKET O-RINGS FOR UPDATED STYLE ANSUL NOZZLES

    NFS-439848 AFTERMARKET O-RINGS FOR UPDATED STYLE ANSUL NOZZLES

    Rated 5.00 out of 5

    $2.25

    Brands: National Fire Supply

    Add to cart

  • OR8-NFS AMEREX HOSE O-RING 1532

    OR8-NFS AMEREX HOSE O-RING 1532

    Rated 5.00 out of 5

    $0.10

    Brands: Amerex

    Add to cart

  • OR26 O-RING (SOLD IN PACKS OF 100)

    OR26 O-RING (SOLD IN PACKS OF 100)

    $0.14

    Brands: Generic

    Add to cart

  • 3390 VALVE STEM SEALS FOR AMEREX 6093

    3390 VALVE STEM SEALS FOR AMEREX 6093

    $0.99

    Brands: Amerex

    Add to cart

  • OR39 O-RINGS (SOLD IN 50 PACKS)

    OR39 O-RINGS (SOLD IN 50 PACKS)

    $0.25

    Brands: Amerex, Badger, Buckeye, Kidde

    Add to cart

Viewing 15 of 33


What is an o-ring on a fire extinguisher, and what part does it play in security? You may know this part as an essential of vehicle engines and hydraulic systems everywhere, but the o-ring is also instrumental in promoting safety on other products. This humble component helps keep extinguishers properly sealed to prevent leaking and ensure your equipment is ready if a fire occurs.

High-Quality O-Ring Options From National Fire Supply

National Fire Supply is your nationwide source for durable and sturdy o-rings for fire equipment. Our in-stock inventory includes selections like:

  • Nozzle and fire hose o-rings
  • Gasket cartridge receivers
  • Valve stem seals
  • Large-valve quad rings

We offer options from today’s most respected brands, including:

  • Ansul
  • Amerex
  • Pyro Chem
  • Kidde

Our store also stocks universal o-rings to fit Badger and Buckeye equipment, plus complete fire extinguisher o-ring kits.

Shop National Fire Supply Online Today

Order securely from our digital storefront and wide in-stock product catalog 24/7. We ship the same day we process your order and offer free, two-day express delivery for many small parts. Have questions or want product guidance? Our team has the answers and advice you need. Contact us online or call our team to experience our signature customer service!

Have Questions?

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