Inner Fire Port Diaphragm - Rubber

This inner diaphragm is a replacement insert designed specifically for marine fire port assemblies. Constructed from clear flexible rubber, it allows visibility into the fire port while maintaining a sealed barrier to prevent the spread of flame, smoke, or vapors. This component is a direct replacement for damaged or worn diaphragms in existing fire port installations and is intended for use in fire detection or suppression access points on marine vessels.

The diaphragm is designed to press-fit or snap into compatible 3" diameter fire port housings. It flexes to allow access for fire extinguisher discharge nozzles without requiring removal of the port body. The clear rubber construction provides unobstructed visual access into the protected compartment for inspection purposes.

Specifications:
– Outer Diameter: 3 inches
– Material: Clear flexible rubber
– Compatibility: Fits standard 3" marine fire port assemblies
– Application: Fire extinguisher nozzle access and visual inspection
– Seal Type: Press-in diaphragm

This is a standalone replacement part and does not include the fire port housing or trim ring. Suitable for routine maintenance or restoration of OEM fire port systems on boats or other marine equipment.